SWITCHING INTENTION AND SWITCHING BEHAVIOR OF ADULTS IN THE NON-LIFE INSURANCE SECTOR: MEDIATING ROLE OF BRAND LOVE
barriers; brand love; insurance; non-life insurance; switching behaviors; switching intentions
In this digital era, customers in the insurance sector always look for better insurance products and services at an affordable price. When customers are unsure about service, they switch over to a better service provider. This behavior is more relevant to non-life insurance. However, the switching behavior of customers is hampered by certain switchover barriers such as brand consciousness, brand pride, brand loyalty, etc. This study focuses on exploring switching intentions and switching behaviors of adults in India keeping brand love as a mediator. A structured questionnaire was employed to collect the primary data from adults having non-life insurance products to analyze switching intentions and switching behaviors. The collected data were analyzed employing SPSS software and Hayes Process Model and appropriate statistical tools. The study results show that the switching intentions of adults vary based on their age, annual income, and education. Mean scores reveal that the lesser the age, the higher the intention to switch over. Further, based on annual income, adults who earn up to Rs 2 lakhs annually have more switching-over intentions (Mean score: 3.9719) followed by adults who earn Rs more than 2 lakhs to 5 lakhs annually (Mean score: 3.7590). Mean scores of education levels regarding switching intentions are higher among more educated adults and less among those who are qualified up to the school level. Arun Kumar N., Girish S., Suresha B., Mahesh E., 2023.
Arun Kumar N.; Girish S.; Suresha B.; Mahesh E.
Insurance Markets and Companies, Vol-14, No. 1, pp. 1-7.
https://doi.org/10.21511/ins.14(1).2023.01 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151011115&doi=10.21511%2fins.14%281%29.2023.01&partnerID=40&md5=26196c852b48df1cdf40f85ccea90c1a
Arun Kumar N., School of Commerce, Finance, and Accountancy, CHRIST (Deemed University), India; Girish S., School of Commerce, Finance, and Accountancy, CHRIST (Deemed University), India; Suresha B., School of Business and Management, CHRIST (Deemed University), India; Mahesh E., School of Social Sciences, CHRIST (Deemed University), India
Coralloid roots; Cyanobacteria; Cycads; Nostoc; Symbiosis
Cyanobacteria are a widespread group of phototrophic bacteria that are morphologically diverse and present on almost every environment on earth. Many cyanobacteria are able to fix atmospheric nitrogen and thus are able to form symbiotic association with a wide range of eukaryotic hosts such as plants, fungi, sponges, and protists. Cyanobacteria are able to provide carbon to nonphotosynthetic hosts such as fungi, but their primary role is to supply fixed nitrogen to enable the host to flourish in nitrogen poor environments. In turn, cyanobionts get the benefits of protection from competition, predation, and environmental extremes. Of all the cyanobacterial symbiotic associations, this chapter focuses on understanding the symbiotic association between gymnosperm and cyanobacteria. Species belonging to phylum cycadophyta are associated with nitrogen-fixing cyanobacteria (Nostoc species) through small specialized roots called coralloid roots. The cyanobionts are expected to have a heterotrophic mode of carbon nutrition, due to their location in coralloid roots (complete darkness). 2023 Elsevier Inc. All rights reserved.
Microbial Symbionts: Functions and Molecular Interactions on Host, pp. 29-37.
Mishra N., Department of Botany, St. Joseph's University, Karnataka, Bengaluru, India; Rakesh B., Department of Life Sciences, Christ University, Karnataka, Bengaluru, India
Symbolism, Ritual, and Continuity: A Socio-Cultural Interpretation of Kumaoni Folk Art Aipan
The chapter aims to explore Aipan, a traditional floor art form of the Kumaoni people in Uttarakhand. It examines Aipan as a cultural practice that encompasses symbolism, rituals, gender roles, and oral traditions. The chapter uses insights from folklore studies, anthropology, and cultural theory to study the visual language and social-religious importance of Aipan motifs. It will also examine how these motifs, which are rooted in Brahmanical tradition but maintained through folk practices, represent personal and community identities. Aipan is not just an art form; it is a culturally meaningful practice that conveys cosmological, spiritual, and social stories. In a time when tradition is both being revived and diluted in the modern market, the chapter will also discuss how Aipan is changing to fit todays consumer culture thus addressing important questions about preservation, change, and authenticity. 2026, IGI Global Scientific Publishing.
Global Perspectives on Indigenous Oral Traditions;pp.243-266
Restricted Access; Hardcopy may be available in the library
https://doi.org/10.4018/979-8-3373-3927-6.ch010 https://www.scopus.com/pages/publications/105020132108?origin=resultslist
Kalra P., Christ University, India; Harikrishnan R., Christ University, India
Symbols as Photographic Texts in the Travel Narratives of Paulo Coelho
Brazilian writer Paulo Coelho de Souzas The Pilgrimage, The Alchemist, Zahir, Aleph and Hippie are known for using literary symbols to describe journeys where the protagonists travel to different destinations searching for something valuable. The author resorted to multiple religions, cultures, traditions, mythologies and folklore to derive inspiration to use those symbols and frame his philosophical thoughts. As the symbols used by Coelho can be deciphered in whatever way subject to personal interpretations, one way of understanding them can be from the perspectives of their already established meanings in religions, cultures, traditions, mythologies and folklore. Such a way of understanding limits the possible meanings that can be derived from those symbols. Moreover, another sign system is known for conveying limited meanings, usually called photographs. Though absolute material accuracy is seen as the hallmark of photography, the meaning of photographs also depends upon their interpretations, and photographic truth is considered a myth. Still, photographs possess documentary properties and convey limited meanings to a large extent. This thesis studied the idea of photography, defining the same by understanding the historical developments in photography over time. Knowing the definition and properties of photographs, it looked at how photographs convey limited meanings and exhibit 'iconic' properties in general. After isolating and studying the literary symbols used by Coelho in the five travel narratives mentioned above using the Peircean model of semiotic analysis, the thesis concludes that symbols act as photographic texts to a certain limit in the five novels, as they tend to move towards becoming 'iconic' from 'symbolic' if understood from the perspectives of their existing meanings in religions, cultures, traditions,mythologies and folklore.
Symbols as photographic texts in the travel narratives of paulo coelho /
Symmetric supercapacitor based on Co3O4 nanoparticles with an improved specific capacitance and energy density
Cobalt oxide; Energy storage; Hydrothermal method; Nanostructured materials; Pseudocapacitive; Symmetric supercapacitor
Metal oxides have garnered significant research interest as highly effective electrode materials for supercapacitors. In this study, we synthesized Co3O4, an electrode material for supercapacitors, utilizing an in-situ hydrothermal method with varying pH levels in the precursor solution. The obtained samples underwent through structural, optical, surface morphological, electrical, and electrochemical analyses, affirming their exceptional suitability for supercapacitor applications. The influence of pH fluctuations in the synthesis process, on the specific capacitance values were analyzed. The X-ray diffraction pattern and Raman spectrum confirmed the normal cubic spinel structure of Co3O4 nanoparticles. The X-ray photoelectron spectrum revealed the chemical bond states of Co3O4. The optical bandgap have been investigated from the Tauc plot. The surface area and morphology were determined through Brunauer Emmett and Teller method and field emission scanning electron microscope images. A high specific capacitance of 1195.05 Fg?1 at a current density of 1.5 Ag?1 was obtained in the three-electrode study for the sample synthesized at a pH of 10. A symmetric supercapacitor (SSC) device was fabricated to facilitate practical analysis. The symmetric supercapacitor device demonstrated a notably elevated specific capacitance of 870.6 Fg?1 at an operational current density of 5 Ag?1, concurrently achieving an enhanced energy density of 77.3 W h/kg and superior power density of 1997.7 W/kg. These performance metrics surpassed those of prior studies in the field. Furthermore, the SSC device exhibited an excellent cyclic stability of 88 % after undergoing 970 charge/discharge cycles. As a result, Co3O4 emerges as a promising and efficient electrode material for applications in supercapacitors. 2024 Elsevier Ltd
Babu C.R.; Avani A.V.; Xavier T.S.; Tomy M.; Shaji S.; Anila E.I.
https://doi.org/10.1016/j.est.2023.110382 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182874993&doi=10.1016%2fj.est.2023.110382&partnerID=40&md5=4b7f3022bb4adeeecd9d842dedfaf134
Babu C.R., CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India; Avani A.V., CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India; Xavier T.S., Government College for Women, Kerala, Thiruvananthapuram, 695014, India; Tomy M., Government College for Women, Kerala, Thiruvananthapuram, 695014, India; Shaji S., Autonomous University of Nuevo Le, San Nicolas de los Garza, 66451, Mexico; Anila E.I., CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India
Symmetric supercapacitor with hydrothermally synthesized ?-MoO3 nanobars coated on Ni foam substrate: A neutral electrolyte approach for energy storage applications
Molybdenum trioxide (MoO3), a potential supercapacitor electrode material is synthesized through hydrothermal method at low temperature. The significant charge-storage process of the MoO3 electrode is extensively analyzed in 0.5M sodium sulfate (Na2SO4) in a wide potential window. The basic functional properties of MoO3 are characterized through different characterization techniques. The electrochemical performance is examined through chargingdischarging method, cyclic voltammetry, and impedance spectroscopic studies of the active electrode with a mass loading of 1 mg cm?2 each. The three-electrode and device systems of the MoO3 electrode are also investigated. The specific capacitance obtained for the device is 295 F g?1 at 1 A g?1 in a potential window of 0 to 1V in 0.5M Na2SO4 electrolyte solution. The densities of energy and power are 40.27 W h kg?1 and 492 W kg?1. The device is further tested for cyclic stability over 1000 cycles and attained a stability of 75% and a Coulombic retention of 100%. This work demonstrates that the MoO3 electrode can be facilitated for the aqueous electrochemical energy storage devices. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2026.
Babu, Chrisma Rose; Anila, E.I.; Avani, A.V.
Journal of Materials Science: Materials in Electronics;Volume;37;Issue;2;Article No.;175;
https://doi.org/10.1007/s10854-026-16571-y https://www.scopus.com/pages/publications/105027049962?origin=resultslist
Babu C.R., Optoelectronic and Nanomaterials Research Laboratory, Department of Physics and Electronics, CHRIST University, Karnataka, Bengaluru, 560029, India; Anila E.I., Optoelectronic and Nanomaterials Research Laboratory, Department of Physics and Electronics, CHRIST University, Karnataka, Bengaluru, 560029, India; Avani A.V., Optoelectronic and Nanomaterials Research Laboratory, Department of Physics and Electronics, CHRIST University, Karnataka, Bengaluru, 560029, India
Symmetric Supercapacitors based on Reduced Graphene Oxide/Multi-walled Carbon Nanotubes/Cobalt Oxide Ternary Composites
cobalt oxide; graphene oxide; multi-walled carbon nanotubes; symmetric supercapacitors
Ternary nanocomposites of reduced graphene oxide/multi-walled carbon nanotubes/cobalt oxide nanoparticles (rGO/MWCNT/Co3O4) were synthesized employing a facile hydrolysis method with subsequent heat treatment. The good electrical conductivity and remarkable carrier mobility of rGO and MWCNTs make them a suitable matrix for hybrid supercapacitors, and their composites with metal oxides exhibit enhanced electrochemical properties due to the advantages of the synergistic contribution and the integration of different dimensionalities. The binary counterparts of Co3O4 with GO or MWCNTs were also produced using the same technique to gain additional insight into the characteristics of the individual components. The structural and morphological properties of the composites were analyzed using various analytical techniques. The electrochemical behaviors of the prepared composites were investigated using cyclic voltammetry (CV), galvanostatic chargedischarge (GCD), and electrochemical impedance spectroscopy (EIS) in 1 M H2SO4. A platinum electrode modified with the rGO/MWCNT/Co3O4 composite displayed a remarkable specific capacitance of 922 F g?1 at a current density of 1 A g?1 composite with a negligible capacitance drop after 2000 cycles. The symmetric supercapacitor fabricated using the rGO/MWCNT/Co3O4 composite showed an energy density of 32.2 Wh Kg?1 at 1 A g?1, and the corresponding power density was 2000 W Kg?1. The supercapacitor fabricated using the composite displayed 83% capacitance retention after 2000 cycles at 3 A g?1 composite. 2023 Taylor & Francis Group, LLC.
James N.; Simon S.; Rajeevan S.; George S.C.; Balakrishnan S.P.
Journal of Macromolecular Science, Part B: Physics, Vol-63, No. 9, pp. 750-771.
James N., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, India; Simon S., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, India; Rajeevan S., Centre for Nanoscience and Technology, Amal Jyothi College of Engineering, Kottayam, India; George S.C., Centre for Nanoscience and Technology, Amal Jyothi College of Engineering, Kottayam, India; Balakrishnan S.P., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, India
Synchronous learning and asynchronous learning during COVID-19 pandemic: a case study in India
COVID-19; Educational institutions; Online education; Student's perceptions; Synchronous and asynchronous learning
Purpose: This research aims to study the students' perspectives on synchronous and asynchronous learning during the COVID-19 Pandemic. Both synchronous and asynchronous learning approaches used in online education have positive and negative outcomes. Hence, the aim is to study online education's positive and negative consequences, reflecting sync and async approaches. This research followed a mixed research approach. The key stakeholders of this research are the Indian educational institutions and students. Design/methodology/approach: This research collected data from the students undergoing synchronous and asynchronous learning amidst the COVID-19 Pandemic. The data were collected (N=655) from various students taking online classes during the pandemic. A questionnaire survey was distributed to the students through online platforms to collect the data. In this research, the authors have collected data using simple random sampling, and the same has been used for data analysis using SPSS version 26. The collected data were exposed to a factor analysis using a principal component analysis technique to reduce the vast dimensions. Findings: The study findings show that synchronous learning is sometimes stressful, placing more responsibility on students mainly because of the increased screen time. At the same time, asynchronous learning allows the students to self-explore and research the topics assigned to them. Students also felt that asynchronous activities create a burden because of many written assignments to be submitted within a short period. Overall, the COVID-19 pandemic has been challenging for the students and the teachers. However, teachers have helped students to learn through digital platforms. The majority of the respondents opined that technological disruptions and death in the family circle had been significant reasons for not concentrating during online classes. However, the combination of synchronous and asynchronous learning has led to a balanced education. Practical implications: Higher education has undergone multiple transformations in a short period (from March 2020, 2021 and beyond). Educational institutions underwent a rapid transition in remote teaching and learning in the initial stages. As time progressed, educational institutions did course navigation where they relooked into their course plans, syllabus and brought a structural change to match the pandemic requirements. Meanwhile, educational institutions slowly equipped themselves with infrastructure facilities to bring academic integrity. At present, educational institutions are ready to face the new normality without disrupting services to society. Social implications: Educational institutions create intellectual capital, which is important for the development of the economy. In the light of COVID-19, there are new methods and approaches newly introduced or old methods and approaches, which are reimplemented, and these approaches always work for the benefit of the student community. Originality/value: The authors collected data during the COVID-19 pandemic; it helped capture the students' experience about synchronous and asynchronous learning. Students and faculty members are newly exposed to synchronous and asynchronous learning, and hence, it is essential to determine the outcome that will help many stakeholders. 2022, Cassandra Jane Fernandez, Rachana Ramesh and Anand Shankar Raja Manivannan.
Fernandez C.J.; Ramesh R.; Manivannan A.S.R.
Asian Association of Open Universities Journal, Vol-17, No. 1, pp. 1-14.
https://doi.org/10.1108/AAOUJ-02-2021-0027 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85125085527&doi=10.1108%2fAAOUJ-02-2021-0027&partnerID=40&md5=fae45792e720cdce3a12e4bff5a434a3
Fernandez C.J., Commerce, Christ University, Bangalore, India; Ramesh R., Commerce, Christ University, Bangalore, India; Manivannan A.S.R., Commerce, Christ University, Bangalore, India
Synergetic Effect of Metal Nanoparticle Embedded Graphene Membrane : A Novel Approach for Antimicrobial Filtration
Water, the elixir of life, holds a profound significance that extends far beyond its essential utility. It's not just a resource; it pulsates as the life force of our existence, intricately woven into the very fabric of our daily lives. Water is the silent force that shapes our world, from nurturing our health and sustaining social structures to fueling economic development and fostering the environment. However, the adequacy of potable water quality confronts adverse impacts stemming from inadequate wastewater treatment, escalating domestic and industrial waste, and the microbial contamination of surface water sources. Furthermore, climate change emerges as a pivotal factor intensifying the depletion of water levels in natural resources due to diminished rainfall. Reports project that, by 2025, two-thirds of global population might contend with water scarcity. Given the persistence of current scenario, there exists a notable potential for significant conflicts among nations stemming from water scarcity. However, such a predicament can be mitigated through proactive measures, including the preservation of natural resources and the implementation of advanced technologies to recover fresh water from contaminated sources. Advanced technologies for the purification of contaminated water encompass sedimentation, precipitation, filtration, and ion exchange, which can effectively extract clean water from diverse impurities. Notably, membrane-based purification has gained prominence in recent years, owing to its cost- effectiveness and energy-saving attributes. Carbon-based nanomaterials, including carbon nanotubes,fullerenes and graphene have garnered considerable attention in recent research studies, particularly in the realm of membrane applications. Within this, membranes fabricated by carbon nanotubes (CNT) stand out, showcasing exceptional filtering properties attributed to their tubular carbon structure. However, the cost-effectiveness and ease of synthesis impediments pose significant challenges, acting as bottlenecks for their widespread application in water purification. Consequently, graphene-based membranes emerge as a promising alternative to CNT membranes, demonstrating selective separation of ions and molecules. Specifically, membranes derived from graphene oxide (GO) and reduced graphene oxide (rGO) exhibit superior filtering capabilities compared to ceramic and polymeric counterparts, owing to their layered structure featuring tunable nanochannels, hydrophilic or hydrophobic nature, and commendable mechanical resilience. Graphene oxide solution synthesis has been done using Hummer's method, followed by fabrication of high-quality membranes through vacuum filtration techniques. Current work emphasis on recognizing the pivotal influence of membrane thickness on both water flux and dye rejection, meticulous optimization of filtration properties by producing graphene oxide (GO) membranes at various concentrations. Furthermore, reduction of graphene oxide through the hydrothermal method, enabling a comprehensive comparative analysis of water flux and rejection between graphene oxide (GO) and reduced graphene oxide (rGO) membranes was carried out. In our investigation, the results unequivocally validate that the GO 500 sample exhibits optimized filtration properties. Furthermore, the reduced graphene oxide (rGO) variant surpasses graphene oxide (GO) in terms of filtration efficacy, demonstrating superior filtering properties. It is noteworthy to highlight that reduced graphene oxide (rGO) exhibits less antibacterial properties compared to graphene oxide (GO). The disinfection capability of the membrane is pivotal in ensuring the recovery of pure water. To bolster the antibacterial features of GO, we have undertaken an enhancement strategy by incorporating silver nanoparticles. Silver nanoparticle, showcases multifaceted properties including surface plasmon resonance and unique morphologies, which contribute significantly to the inactivation of bacteria. The conducted studies reveal that membranes incorporating graphene oxide with silver (GO-Ag) exhibit remarkable antibacterial properties against both gram-positive and gram-negative bacteria. Additionally, these membranes demonstrate appreciable filtration capabilities and exhibit effective antifouling properties, further emphasizing their potential for advanced applications in water purification systems. Fouling is a significant challenge in membrane technology, as the continuous passage of contaminants results in the formation of layers on membrane surface, thereby diminishing its filtration efficiency. Despite the antifouling properties exhibited by GO- Ag membranes, there exists further improvement in enhancing performance and extending the membrane's lifespan. To address this, we have undertaken a reduction of graphene oxide and incorporated silver nanoparticles, aiming to augment the antifouling properties and overall efficacy of membrane. The conclusive findings indicate that fine-tuned membrane exhibits remarkable antibacterial properties, superior filtration capabilities, and a minimal irreversible fouling ratio. These outcomes provide confirmation that the fabricated membranes stand as potential materials for water purification applications, showcasing a well-rounded set of properties essential for effective and sustainable water treatment.
Synergetic effect of metal nanoparticle embedded graphene membrane a novel approach for antimicrobial filtration /
Synergetic effects of cross-linking and incorporation of Fe-Al bimetallic combination on the properties of polyvinyl alcohol novel films
Fe-Al bimetallic system; Glutaraldehyde; PVA film; Synergetic effect
Polyvinyl alcohol films incorporated with Fe-Al bimetallic combination novel films were synthesized by sol-gel method in the presence of glutaraldehyde (GA). The results of FTIR spectra confirmed the cross-linking between PVA and GA, resulted in the formation of rigid molecular chains. The comparison of thermograms of pure PVA and Fe-Al PVA films cured with GA indicated the enhanced thermal stability of the cured films. The electrical properties of the pure PVA films and bimetallic PVA films cured with GA were studied in the frequency range 100 Hz to 100 kHz. The current study explains the effect of GA and incorporation of Fe-Al bimetallic combination towards the structural modification and dielectric properties like dielectric constant, dielectric loss, ac conductivity, polarization, and permittivity of the cured PVA films. The variation of the storage modulus of cured PVA films as a function of temperature has also been studied. 2023, Qatar University and Springer Nature Switzerland AG.
Binish C.; Johns J.; Nakaramonthri Y.; Pittayavinai P.; Vijayasankar A.
Emergent Materials, Vol-6, No. 4, pp. 1309-1318.
Binish C., Department of Sciences & Humanities, School of Engineering and Technology, CHRIST - Deemed to be University, Bangalore, 560074, India; Johns J., Department of Physics, Rajarajeswari College of Engineering, Kumbalagodu, Bangalore, 560074, India; Nakaramonthri Y., Sustainable Polymer Materials Research Group, Department of Chemistry, Faculty of Science, King Mongkuts University of Technology, Thonburi, Bangkok, 10140, Thailand; Pittayavinai P., Sustainable Polymer Materials Research Group, Department of Chemistry, Faculty of Science, King Mongkuts University of Technology, Thonburi, Bangkok, 10140, Thailand; Vijayasankar A., Department of Sciences & Humanities, School of Engineering and Technology, CHRIST - Deemed to be University, Bangalore, 560074, India
Bioactive synergy; Bioavailability; Functional foods; Nanocarriers; Nutraceuticals; Pharmacokinetic enhancement
Nutraceuticals are bioactive compounds or functional foods consumed to sustain nutrition and support disease prevention. Derived from nutrition and pharmaceuticals, the concept merges food science with therapeutic potential. Synergism in nutraceutical formulations arises when two or more bioactive agents interact to produce enhanced pharmacological or physiological outcomes that surpass the sum of their individual effects. This principle addresses key challenges of monotherapy: poor bioavailability, limited target specificity, and rapid metabolic degradation by enabling multicomponent, mechanistically complementary formulations. Recent innovations such as nano-encapsulation and codelivery systems further enhance absorption, stability, and efficacy of synergistic blends. This chapter provides a comprehensive overview of molecular and formulation-based synergism in nutraceuticals, focusing on mechanistic interactions, formulation challenges, and future directions toward supernutraceuticals that integrate advanced bioengineering and traditional dietary wisdom. Springer Nature Switzerland AG 2026.
Gobinath, Mirunalini; Mukherjee, Sagarika; Almoselhy, Rania I. M.; Siddiqui, Mohd Aftab; Usmani, Afreen; Rajendran, Rajakumari; Thomas, Sabu; Bihani, Manisha
Handbook of Nutraceuticals: Science, Technology and Engineering;pp.625-648
https://doi.org/10.1007/978-3-031-98791-5_49 https://www.scopus.com/pages/publications/105032517310?origin=resultslist
Gobinath M., Department of Pharmacognosy & Phytopharmacy, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Tamil Nadu, Ooty, India; Mukherjee S., Department of Pharmacognosy & Phytopharmacy, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Tamil Nadu, Ooty, India; Almoselhy R.I.M., Oils and Fats Research Department, Food Technology Research Institute, Agricultural Research Center, Giza, Egypt; Siddiqui M.A., Faculty of Pharmacy, Integral University, Uttar Pradesh, Lucknow, India; Usmani A., Department of Pharmacology, MESCO Institute of Pharmacy, Amroha, India; Rajendran R., The Oxford College of Pharmacy, Karnataka, Bengaluru, India; Thomas S., Center of Excellence in Polymeric Materials for Medical Practice Devices, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand, TrEST Research Park, Kerala, Trivandrum, India, School of Nanoscience and Nanotechnology, Mahatma Gandhi University, Kerala, Kottayam, India, Department of Physics and Electronics, Christ University, Bangalore, India; Bihani M., Department of Pharmacognosy, Krupanidhi College of Pharmacy, Karnataka, Bangalore, India
Synergistic advancements in energy storage: g-C3N4/NiFe2O4/PANI composite with augmented electrochemical capabilities
Conducting polymers; Ferrite; Graphitic carbon nitride (g-C3N4); Supercapacitor
This study examines the electrochemical behaviour of a hybrid composite material of graphitic carbon nitride/Nickel ferrite/Polyaniline (g-C3N4/NiFe2O4/PANI) synthesized by hydrothermal method, coupled with in-situ polymerisation. The ensuing g-C3N4/NiFe2O4/PANI composite demonstrates superior characteristics for energy storage applications. Through a comprehensive analysis, we elucidate the combined effects of the distinct components, revealing improved electrochemical properties. The composite exhibits improved galvanostatic charge/discharge exhibiting a specific capacitance of 770 Fg?1 at 1 Ag?1 current density. This research underscores the perspective of the g-C3N4/NiFe2O4/PANI composite as a promising candidate for advanced energy storage systems. 2024 Elsevier Ltd
https://doi.org/10.1016/j.electacta.2024.144710 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198910107&doi=10.1016%2fj.electacta.2024.144710&partnerID=40&md5=77e990aebb833716507fce6e8ac5f051
V P A., CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; P B S., CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India
Synergistic Co-grafting of multiwalled carbon nanotubes using SO3H and choline chloride-urea in fabricating uniform thin films with enhanced visible light transparency and reduced sheet resistance
Co-grafting (A); Deep eutectic solvent (C); Sulfonated MWCNT (D); Transparent conducting electrodes (E)
New materials and innovative modification methods are indispensable to advance the energy field. The present work reports the fabrication of transparent conducting electrodes using Multiwalled carbon nanotube (MWCNT) that have been modified with sulfonic acid (SO3H) and a combination of Choline Chloride-Urea/Sulfonic acid (DES/SO3H). A comprehensive investigation was conducted to ascertain the impact of employing DES and SO3H in achieving consistent and long-lasting dispersions of multiwalled carbon nanotubes in different solvents and the most favourable condition was achieved when employing n-heptanol. The films were fabricated on glass substrate by using the spray pyrolysis technique. The stability of the system following the modification was unequivocally confirmed by SEM analysis, while the electronic structure was assessed qualitatively by EDX analysis. Optical profilometry analysis revealed that the film thickness fell within the range of 350385 nm. The co-grafted film demonstrated an optical transparency of approximately 84.96%, modestly exceeding that of the singly grafted film, which was determined to be 70.14% in the visible region. The sheet resistance of DES/S-MWCNT and S-MWCNTs was calculated to be approximately 3.33k?/Sq and 5.02k?/Sq, respectively. The calculated charge transfer resistance (RCT) for the co-grafted and singly grafted MWCNT systems was 0.185? and 0.190?, respectively. These values align closely with the corresponding sheet resistance values obtained. The electrochemical investigations also showed an increased specific capacity for DES/S-MWCNT, approximately 896.2C/g, whereas the calculated value for the S-MWCNT system was 826.8C/g. 2024 Elsevier B.V.
Veigas L.M.; Sunaja Devi K.R.; Chundattu S.J.; Mohan M.K.
https://doi.org/10.1016/j.optmat.2024.115260 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85190124707&doi=10.1016%2fj.optmat.2024.115260&partnerID=40&md5=4b4135c2b2af9f2fdf64174fba9a631e
Veigas L.M., Department of Sciences and Humanities, School of Engineering and Technology, CHRIST (Deemed to be University), Mysore Road, Karnataka, Bengaluru, 560074, India; Sunaja Devi K.R., Department of Chemistry, CHRIST(Deemed to be University), Karnataka, Bangalore, 560029, India; Chundattu S.J., Department of Sciences and Humanities, School of Engineering and Technology, CHRIST (Deemed to be University), Mysore Road, Karnataka, Bengaluru, 560074, India; Mohan M.K., Department of Sciences and Humanities, School of Engineering and Technology, CHRIST (Deemed to be University), Mysore Road, Karnataka, Bengaluru, 560074, India
Synergistic effect of bio-nanocarbon embedded polymer nanocomposite and its applications
Biocarbon; Biochar; Microstructure; Nano-biocomposite; Nano-carbon
For applications involving sustainable materials, bio-nanocarbon was examined as a material to improve the properties of fiber-reinforced nanobiocomposite. A thorough investigation has been conducted using nano biocarbon as a filler and reinforcing material. However, the composite's inferior mechanical, physical, and thermal properties are a result of a poor fiber-matrix interface. As a result, in this study, biocarbon nanoparticles were created and used as functional components to enhance the properties of polymeric composite materials. To emphasize the scientific and technological issues that need to be resolved in order to create artificial composites with bio-inspired structures, recent studies of bio-inspired nano-carbon composites are discussed in this study. These include the production techniques for resolving the nanocarbon dispersion problem and creating bio-inspired structures, as well as the microstructure and composite characteristics characterization. In order to reveal natural design principles and serve as a resource for future research, bio-inspired composites and their applications are thoroughly examined and explained. 2023 Bentham Science Publishers.
Molahalli V.; Joseph J.; Bijapur K.; Sharma A.; Soman G.; Hegde G.
Molahalli V., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Joseph J., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Bijapur K., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Sharma A., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Soman G., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Hegde G., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India
Synergistic Effect of Chemical and Physical Treatments on Azolla pinnata for Cadmium Ions Removal from Synthetic Wastewater Systems
Azolla pinnata; cadmium chelation; chemi-cal and physical modifications; phytoremediation; surface properties
Azolla pinnata, an aquatic fern has been utilized as an effective biofiltering and ad-sorbent agent to complement many convention-al treatment methods for the removal of environmental pollutants. This study is designed to develop an effective regime to treat metal pollutants of industrial and urban waste discharge using a novel strategy involving Azolla pinnata. In the present study, cell surface modification by physical treatments that include heating (muffle furnace), and mechanical waves (ultrasonication) and chemical treatments as sulphuric acid and ethanol were employed to enhance the adsorption of metal pollutants. Factors such as biosorbent dose, contact time, initial metal ion concentration, temperature, and solution pH were optimised in batch mode. The point of zero charge of the adsorbent was determined to be at 5.85 pH. The results of surface morphology, elemental analysis, crystallinity, recorded through SEM, FTIR and XRD confirmed the ad-sorptive properties in both modified and unmod-ified biomass. The intensity peaks linked to O-H, C-H, C-N, N-H and C=O stretching bands was intense in the treated A. pinnata groups indicat-ing the induction of the active groups. Out of the two chemical pre-treatments, the batch ad-sorption experiment with ethanol found to che-late Cd+2 metal ions to a higher extent (94.36%) in contrast to the results obtained from H2SO4 treated biomass. Whereas, the physical treat-ments exhibited the strong adsorption (83.28 and 96.920.55%) for ultrasonicated and muf-fle furnace pre-treated biomass respectively for the dosage of 0.25g. The adsorption efficiency of physically modified sorbent revealed the cent percent removal of Cd+2 ions from the aqueous phase with the dosage of 1.0g in 15min of con-tact time which is due to the incorporation of new binding sites. Moreover, these results proved that the highest rate of cadmium adsorption onto A. pinnata is in result of the modifications caused onto surface structure, porosity and the addition of functional groups on the surface of the treated biomass. 2024, Curr. Trends Biotechnol. Pharm. All rights reserved.
Current Trends in Biotechnology and Pharmacy, Vol-18, No. 3, pp. 1881-1896.
Association of Biotechnology and Pharmacy
All Open Access; Hybrid Gold Open Access
https://doi.org/10.5530/ctbp.2024.3.34 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85211353773&doi=10.5530%2fctbp.2024.3.34&partnerID=40&md5=d446362f66eb41f55fd430afd0bfbf63
Rajalakshmi K.S.V., Department of Lifesciences, CHRIST (Deemed to be University), Bangalore, 560029, India; Paari K.A., Department of Lifesciences, CHRIST (Deemed to be University), Bangalore, 560029, India
Synergistic effect of metals and cross linkers on surface modification of iron aluminum oxyhydroxide-PVA polymer films for enhanced catalytic activity in transesterification reaction
aluminum oxyhydroxide; iron polymer films; polyvinyl alcohol films; terpene esters; transesterification
Iron-incorporated aluminum oxyhydroxide polyvinyl alcohol films (Fe-Al-PVA) were synthesized using the solgel method. The influence of cross-linking agents on the aluminum oxyhydroxide films was investigated by incorporating glutaraldehyde into the synthesized films. Various characterization techniques were employed to understand the physico-chemical properties that affect the catalytic and adsorptive behavior of the self-supported films. The liquid phase transesterification of terpenes was used to test the catalytic activity of the films for the synthesis of industrially important terpene esters. The products were analyzed using GC, GCMS, and NMR techniques, and optimization studies were carried out under different experimental conditions. The reaction scope was expanded to a wider range of organic compounds, and a possible reaction mechanism was proposed. This study demonstrates the design and modification of efficient bimetallic polymer film catalyst for organic transformations. 2023 Wiley Periodicals LLC.
Binish C.J.; Kopparapu I.; Vijayasankar A.V.; John A.M.; Chundattu S.J.
Journal of Applied Polymer Science, Vol-140, No. 46
https://doi.org/10.1002/app.54778 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85173428559&doi=10.1002%2fapp.54778&partnerID=40&md5=0a8b54aca0e27a49aa9ccbfd02a81ff0
Binish C.J., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, India; Kopparapu I., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, India; Vijayasankar A.V., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, India, Department of Sciences & Humanities, CHRIST (Deemed to be University), Bangalore, India; John A.M., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, India; Chundattu S.J., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, India, Department of Sciences & Humanities, CHRIST (Deemed to be University), Bangalore, India
Synergistic effects of CuO/TiO2-chitosan-farnesol nanocomposites: Synthesis, characterization, antimicrobial, and anticancer activities on melanoma cells SK-MEL-3
anticancer; farnesol; mitochondrial membrane potential; nanocomposites; ROS; skin cancer
The current investigation focuses on synthesizing copper oxide (CuO)-titanium oxide (TiO2)-chitosan-farnesol nanocomposites with potential antibacterial, antifungal, and anticancer properties against Melanoma cells (melanoma cells [SK-MEL-3]). The nanocomposites were synthesized using the standard acetic acid method and subsequently characterized using an X-ray diffractometer, scanning electron microscope, transmission electron microscopy, and Fourier transform infrared spectroscopy. The results from the antibacterial tests against Streptococcus pneumoniae and Stapylococcus aureus demonstrated significant antibacterial efficacy. Additionally, the antifungal studies using Candida albicans through the agar diffusion method displayed a considerable antifungal effect. For evaluating the anticancer activity, various assays such as MTT assay, acridine orange/ethidium bromide dual staining assay, reactive oxygen species (ROS) generation assay, and mitochondrial membrane potential (MMP) analysis were conducted on SK-MEL-3 cells. The nanocomposites exhibited the ability to induce ROS generation, decrease MMP levels, and trigger apoptosis in SK-MEL-3 cells. Collectively, the findings demonstrated a distinct pattern for the synthesized bimetallic nanocomposites. Furthermore, these nanocomposites also displayed significant (p < 0.05) antibacterial, antifungal, and anticancer effects when tested on the SK-MEL-3 cell line. 2023 Wiley-VCH GmbH.
Indumathi T.; Suriyaprakash J.; Alarfaj A.A.; Hirad A.H.; Jaganathan R.; Mathanmohun M.
Journal of Basic Microbiology, Vol-64, No. 2
ISSN: 0233111X; PubMed ID: 37988658; CODEN: JBMIE
https://doi.org/10.1002/jobm.202300505 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85177439365&doi=10.1002%2fjobm.202300505&partnerID=40&md5=72ab3adda5e797a9390d61d32f850ce1
Indumathi T., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, India; Suriyaprakash J., Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, China; Alarfaj A.A., Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia; Hirad A.H., Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia; Jaganathan R., Microbiology Unit, Preclinical Department, Faculty of Medicine, Royal College of Medicine Perak (UniKL-RCMP), Universiti Kuala Lumpur, Ipoh, Malaysia; Mathanmohun M., Department of Microbiology, Muthayammal College of Arts and Science, Rasipuram, Tamil Nadu, Namakkal, India
Synergistic effects of graphene oxide grafted chitosan & decorated MnO2 nanorods composite materials application in efficient removal of toxic industrial dyes
Adsorption; Chitosan; Graphene oxide; Ionic dyes; MnO2 nanorods; Wastewater
In this study, we designed a heterogeneous graphene oxide (GO) grafted on chitosan decorated with MnO2 nanorods (?-MnO2NRs/GO-Chit) composite materials and its ability to remove the cationic and anionic toxic dyes from wastewaters were analysed. The synthesised materials presented an effective stabilization of active MnO2 nanorods (NRs) on the GO-Chit surface. The synthesised materials were detailed characterised by several spectroscopic and microscopic techniques such as, FT-IR, P-XRD, SEM, TEM, Raman, TGA, XPS, BET, CO2-TPD and UVVisible analysis. In addition, ?-MnO2NRs/GO-Chit material is successfully applied in removal of industrial ionic dyes such as amido black 10B (AB) and methylene blue (MB), respectively. The dye adsorption experiments confirmed that the GO-Chit/?-MnO2 NRs material exhibited remarkably high adsorption capacity in efficient removal of cationic dye methylene blue (MB) and anionic dye amido black 10B (AB). The maximum MB dye removal (97%) process completed in 24 min at C0 = 30 mgL?1, but in the case of AB the maximum dye removal (80%) process was reached in 700 min. Over GO-Chit/?-MnO2 NRs hybrid material, a maximum theoretical monolayer adsorption (qmax values is 328.9 mg g?1) of MB was calculated from the Langmuir isotherm equation. In case MB, a faster adsorption and 2.18 times maximum adsorption capacity was achieved than that of AB10 dye. The enhanced adsorption over ?-MnO2NRs/GO-Chit is due to the increased surface functionalities (i.e., oxygen-containing groups), high basicity and strong electrostatic forces between MnO2 nanorods and GO-Chit. Furthermore, ?-MnO2NRs/GO-Chit hybrid material displayed good stability after 10 successive adsorption tests. 2022 Elsevier Ltd
Rajendiran R.; Patchaiyappan A.; Harisingh S.; Balla P.; Paari A.; Ponnala B.; Perupogu V.; Lassi U.; Seelam P.K.
Journal of Water Process Engineering, Vol-47
https://doi.org/10.1016/j.jwpe.2022.102704 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126036918&doi=10.1016%2fj.jwpe.2022.102704&partnerID=40&md5=2d61331ed4dfaabecf1a0f1508ebe525
Rajendiran R., Energy & Environmental Engineering Department, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad, 500007, India; Patchaiyappan A., Department of Ecology and Environmental Sciences, Pondicherry University, Puducherry, 605014, India; Harisingh S., Department of Physics, KPR Institute of Engineering and Technology, Tamil Nadu, Coimbatore, 641407, India; Balla P., Energy & Environmental Engineering Department, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad, 500007, India; Paari A., Department of Life Sciences, Christ University, Karnataka, Bangalore, 560029, India; Ponnala B., Department of Chemistry, Pondicherry University, Puducherry, 605014, India; Perupogu V., Energy & Environmental Engineering Department, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad, 500007, India; Lassi U., Sustainable Chemistry Research Unit, Faculty of Technology, University of Oulu, P.O. Box 4300, Oulu, 90014, Finland; Seelam P.K., Sustainable Chemistry Research Unit, Faculty of Technology, University of Oulu, P.O. Box 4300, Oulu, 90014, Finland