Browse Items (7684 total)
Sort by:
-
Financial Literacy and Fintech : A Double-Edged Sword for Millennial Investors Behavioral Biases
Purpose: The current research focused on investigating the moderating effect of financial literacy and financial technology on the heuristic behavior of millennials. Research Approach: The research was based on the primary data; a survey method questionnaire was prepared to collect the data needed for the present research. With the purposive sampling method, 526 responses were collected from millennial investors. The partial least square-structural equation modeling (PLS-SEM) method was applied to infer the moderating effect of financial literacy and financial technology on millennials heuristic behavior. Findings: The results showed that financial literacy significantly moderated the relationship between millennials heuristics and behavioral biases, whereas financial technology had no moderating effect. Research Implications: Millennial investors were slammed or benefited by the stock market performance. The research aimed to help them understand their behavioral changes during market anomalies. Financial advisors and regulatory bodies should consider the studys outcome as it contributes to mitigating the misconception of behavioral bias. Originality: There are numerous articles describing individual investors behavioral biases, but the current researchs uniqueness was to measure the moderating effect of financial literacy and financial technology on millennials heuristics and behavioral biases and a significant contribution to the world of research in behavioral finance. 2025, Associated Management Consultants Pvt. Ltd.. All rights reserved. -
Banking Dynamics and Economic Growth in India: Unveiling the Interplay of Key Performance Indicators
Purpose: This study aimed to analyze the influence of bank performance on economic growth. We proposed a framework of banking variables to gain a holistic picture. Design/Methodology/Approach: To identify the causal relationship, we ran cointegration tests and vector autoregression (VAR). In addition, we used the impulse response function test. This helped in analyzing the response of GDP growth to banking shocks. Findings: We identified that banking variables like domestic credit (DC), return on equity, and capital adequacy ratio can stimulate economic growth. Long-term and short-term influence of banking performance on economic growth. Improved performance of banks can translate to economic growth. Our results also indicated that well-capitalized banking, high return on equity, and increased credit access were critical drivers of GDP growth. Practical Implications: This research offered important insights into the role of banking performance in influencing economic growth. We recommended that policymakers implement measures to improve capital adequacy, enhance profitability, and increase credit flow for sustained economic success and development. Originality/Value: This study added to existing research by examining how banking performance influenced economic growth in a developing context. Unlike prior studies that focused mainly on advanced economies, our analysis centered on India, offering evidence from an emerging financial system and providing context-specific insights. 2025, Associated Management Consultants Pvt. Ltd. All rights reserved. -
STUDY OF THE LINEAR AND NONLINEAR REGIMES OF NATURAL CONVECTION WITH WEAK OR DOMINATING INTERNAL HEAT GENERATION FOR RIGID-FREE BOUNDARIES
The paper presents the linear and non-linear regimes of natural convection in the presence of uniform internal heat generation for rigid-free boundaries. A linear stability analysis followed by nonlinear stability analysis is carried out for using a novel procedure. The eigenvalue of the two problems are different. The first one has Rayleigh number based on internal heat generation as the eigenvalue while the second, which is of the classical Bard type, has a buoyancyRayleigh number. The critical Rayleigh number in both problems is initially determined using the single-term Galerkin method, followed by a refinement of the value by the Maclaurin series method. The findings indicate that the system becomes stable with increasing values of the porous parameter and the Brinkman number. The percentage relative error in the eigenvalue obtained by the single-term Galerkin method relative to that obtained by the Maclaurin series method is presented. In the second natural convection problem, we have two Rayleigh numbers, viz., the weak internal Rayleigh number, RI, and the external Rayleigh number, Ra. The effect of RI on Rac is to reduce it in the case of a heat source and increase it in the case a of heat sink. Additionally, conditions facilitating the transition from Brinkman Bard convection to DarcyBard convection are presented. The GinzburgLandau equation is obtained for both the problems and the scaled Lorenz model is derived in the case of second problem. The solution from the GinzburgLandau equation is used to plot for the amplitude and results are illustrated. 2025 by Begell House,. -
A STUDY ON PERFECT ITALIAN DOMINATION OF GRAPHS AND THEIR COMPLEMENTS
Perfect Italian Domination is a type of vertex domination which can also be viewed as a graph labelling problem. The vertices of a graph G are labelled by 0, 1 or 2 in such a way that a vertex labelled 0 should have a neighbourhood with exactly two vertices in it labelled 1 each or with exactly one vertex labelled 2. The remaining vertices in the neighbourhood of the vertex labelled 0 should be all 0s. The minimum sum of all labels of the graph G satisfying these conditions is called its Perfect Italian domination number. We study the behaviour of graph complements and how the Perfect Italian Domination number varies between a graph and its complement. The NordhausGaddum type inequalities in the Perfect Italian Domination number are also discussed. 2025, Krasovskii Institute of Mathematics and Mechanics. All rights reserved. -
Memes and Marketing: What the social media users have to say?; [Memes e Marketing: O que os usuios das redes sociais t a dizer?]
This study delves into the nascent field of memesunits of cultural transmissionfocusing on their potential applications, notably to the field of marketing. The research highlights the prevalence of brands creating meme content to engage with the public, but notes a dearth of comprehension regarding user responses to such content. The study employs semi-structured interviews to gauge social media users' awareness and receptiveness to brand-generated memes. Information was collected from thirty people residing in India. The sample consisted of people from Generations X (1965 1980), Generation Y (Millennials) (1981 1995), and Generation Z (1995 Present). Following a Grounded Theory approach, a textual analysis categorizes participants based on shared responses, utilizing the Theory of Diffusion of Innovations to understand the adoption of new content. The objective of the paper is to analyze individuals' attitudes towards memes and classify them into distinct categories, such as early adopters, those uncomfortable with memes, indifferent individuals, or late adopters. The theory identifies distinct user categories, shedding light on how various segments of society embrace innovations. The study aims to enhance marketers' understanding of meme reception, offering insights and recommendations for evolving this form of marketing into a more effective and entertaining practice. This Article is Distributed Under the Terms of the Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0/deed.en. -
Impact of Restrictive Trade Policies, Channel Conflict and Uncertain Business Environment on Marketing Channel Satisfaction in FMCG Sector
Purpose: This study examines the influence of restrictive trade policies, channel conflict, and uncertain business environments on marketing channel satisfaction in the Fast-Moving Consumer Goods (FMCG) sector. It explores how external policy interventions and environmental volatility shape channel dynamics and satisfaction levels. Design/Methodology: A structured questionnaire was administered to channel members in the FMCG sector in Kerala. Data were analyzed using correlation and regression techniques to assess the direct effects of restrictive trade policies and channel conflicts. Data from 189 wholesalers and 262 retailers in Kerala in the FMCG Sector, was analyzed using Structural Equation Modeling (SEM). Results: The results indicate that restrictive trade policies and channel conflicts significantly and negatively impact channel satisfaction. Additionally, the uncertain business environment exacerbates these negative effects. Practical Implications: The findings provide actionable guidance for both policy-makers and marketing channel managers in the FMCG sector. Conclusions: This study contributes to marketing channel literature by integrating policy, conflict, and environmental perspectives into a single framework. It underscores the importance of understanding how macro-level restrictions and uncertainties interact with micro-level channel dynamics in shaping satisfaction, particularly in emerging market contexts. This study is very relevant in the field of distribution science. The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://Creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Impact of Goal Divergence, Unbalanced Dependence and Miscommunication on Marketing Channel Satisfaction
Purpose: Marketing channel satisfaction is a critical factor influencing the efficiency and long-term sustainability of distribution networks. However, conflicts arising from goal divergence, unbalanced dependence, and miscommunication often disrupt channel relationships, affecting overall satisfaction levels. This study examines the impact of these three conflict-inducing factors on marketing channel satisfaction, drawing insights from empirical research conducted in the fast-moving consumer goods (FMCG) sector. FMCG sector is considered as the barometer of any economy because of its wide reach to both the urban and rural market. Research design, data and methodology: Using a structured survey and statistical analysis, the study identifies the extent to which goal misalignment, power imbalances, and communication breakdowns contribute to dissatisfaction among channel members. Results: The findings highlight that goal divergence leads to reduced cooperation, unbalanced dependence fosters opportunistic behaviour, and miscommunication exacerbates misunderstandings, collectively diminishing channel satisfaction. The study contributes to the literature on channel conflict management and offers practical implications for businesses seeking to enhance collaboration, trust, and efficiency in their marketing channels. Conclusions: The study explores how the marketing channel members like distributors, wholesalers and retailers can reduce distribution channel conflict and enhance marketing/distribution channel satisfaction. This is still important even though online selling and e-commerce has become the order of the day. This study is very relevant in the field of distribution science. The Author(s) This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://Creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Enhancing Angle Modulation Using Fractional Calculus: Theory and Performance Analysis
Angle modulation originally forms part of the backbone of the telecommunication and signal processing, where current studies are being carried out to improve its susceptibility to noise interference. This paper aims to analyze the possibility of the application of fractional calculus for optimization of angle modulation, as a requirement for development of enhanced and flexible communication networks. The main purpose of this study is to design and model new angle modulation technique which are Fractional Phase Modulation (FPM) and Fractional Frequency Modulation (FFM) by using fractional calculus. A generalized form of angle modulation and an introduction to the use of fractional calculus was proposed and a mathematical analysis of FM and FFM detectors was done. In evaluating the findings, the interaction between the fractional order of ? and some performance parameters like Signal-to-Noise Ratio (SNR) and Figure of Merit (FoM) was also considered. It has been shown that FPM and FFM detectors also show high SNR and FOM performance, and when ? is replaced. The FPM detector demonstrated a steady trend and increased from SNR 0 to 1 when the ? was diverse, while the FFM detector had a huge increase in SNR from ?=-0.9 to 0. These results indicate that the angle provides additional benefits in partial stones, signaling purity and system flexibility for the modulation technique. Thus, the ability to achieve better stability in communication for modulation techniques indicates the ability to achieve better stone purity and system flexibility for modulation techniques. Since partial order ? can be adjusted to fit the application, the proposed method shows interesting applications in many communication settings, especially when the signal is noisy or dynamic. 2025, School of Electrical Engineering and Informatics. All rights reserved. -
Accentuated bioavailability of bioactive compounds in foods by nanotechnology-based delivery approaches
One of the perennial problems faced by the food industry is the poor bioavailability of nutrients, arising generally due to lowered solubility or inadequate absorption by the gastrointestinal tract. Nanotechnology-based encapsulation techniques have shown to significantly enhance the bioavailability of various food bioactive compounds. Targeted delivery of specific nutrients to specific organs, low toxicity, maximization of nutrient uptake, extended release of nutrients, and enhanced texture and flavor are the major advantages of such systems, a few of which are discussed in this review. In keeping with these pertinent paradigms, the current review also highlights how food nanotechnology-based delivery systems ensure efficient bioaccessibility of dietary compounds that otherwise cannot be maximally achieved under in vivo conditions or by using biopolymer-based encapsulation. However, as with any technology, this also comes with its own set of drawbacks and lacunae, which are also presented in the current review. With the surge in global population, emphasis should be placed on optimizing bioavailability of vital food nutrients, catering to Sustainable Development Goals (SDGs) 2 and 3. In a global landscape, a collaborative effort from regulatory bodies, consumers, and manufacturers will enable satisfactory, efficient, and safe commercialization of nanotechnological delivery systems for functional foods and bioactives. 2026 Codon Publications -
Stability and durability studies on platinum-decorated CNTs electrocatalyst synthesized via microwave-assisted polyol method for PEM fuel cell
In this study, an efficient and viable microwave-assisted polyol route was adopted to decorate Pt nanoparticles on multi-walled carbon nanotubes (CNT). Carbon corrosion tests were conducted on bare CNT (T), functionalized CNT (f-T), and commercial carbon (Vulcan XC-72R); our results indicate that f-T have the highest resistance toward corrosion, indicating its high stability in corrosive environments. The cyclic voltammetry curves were obtained before and after 5000 cycles by subjecting the electrocatalyst to harsh potential cycling; our test results imply that Pt/CNT are more durable when compared to commercial Pt/C. Then, fuel cell studies comprising Pt/CNT as cathode electrocatalyst was studied, and the results showed enhanced performance (maximum power density: 384 mW cm?2) for Pt/f-T than commercial Pt/C (367 mW cm?2) in Polymer electrolyte membrane (PEM) fuel cell, indicating the potential use of carbon nanotubes as support in PEM fuel cell. The Author(s), under exclusive licence to The Materials Research Society 2025. -
Impact of inclusive recreational and life-skill activities on physical, personal care, and communication skills of students with intellectual disability
Background and Study Aim Students with intellectual disabilities (SwID) often face challenges in interpersonal communication, personal hygiene, and motor development, hindering their social integration and independence. Physical activity and socialization are key factors for improving these areas, but traditional fitness programs often do not address the specific needs of SwID. This study aims to determine the effect of Inclusive Recreational and Life-Skill Activities (IRLSA) on SwID, specifically in their physical abilities, personal hygiene, and interpersonal communication. Material and Methods The study used a quasi-experimental pre-test/post-test control group design. Forty male students with mild intellectual disabilities were selected from special schools and academies in Coimbatore, Tamil Nadu. Their age was 15.9 1.42 years, height 157.52 8.32 cm, weight 57.57 7.72 kg, and BMI 23.15 2.04. Participants were selected based on their ability to follow basic instructions and the absence of severe medical conditions restricting movement. They were divided into two groups: a control group (n=20) that continued their daily routine and an experimental group (n=20) that participated in 16 weeks of inclusive recreational and life-skill activities. The training sessions focused on cardiovascular endurance, physical strength, flexibility, personal hygiene practices, and communication skills. Pre-and post-intervention measures were conducted using standardized tests. Results The experimental group showed significant improvements compared to the control group (p < 0.05) in all measured parameters: cardiovascular endurance (6-min walk test: p=0.001), flexibility (Sit and reach: p=0.001), muscular strength (lower body) (Sit-to-stand: p=0.007), muscular strength (upper body) (5 kg medicine ball throw: p=0.002), personal care and safety (Comprehensive assessment tool: p=0.001), and communication and interpersonal skills (p=0.001). In contrast, the control group showed minimal or no improvements in these variables (p > 0.05), reinforcing the need for structured interventions. Conclusions The study demonstrates that IRLSA significantly enhance physical fitness, personal care, and communication skills among SwID. The structured, peer-supported approach fosters holistic development and social inclusion. These findings advocate for the systematic integration of IRLSA into educational and therapeutic programs to promote functional independence and well-being in this population. Dharmalingam Yuvaraj, Govind Premkumar, Mani Aravindh, Manamkandath Mohamedprince, Kombath Asaraf Rinsha, 2025. -
Queer healing in altered states: A critical interpretive synthesis of psychedelic therapy inqueer and non-binary individuals
As psychedelic-assisted therapies gain prominence, queer and non-binary individuals remain largely marginalized within this emerging field. This Critical Interpretive Synthesis (CIS) reviews 44 empirical studies (20142024) to explore how queer experiences are represented and erased in psychedelic research. Guided by queer theory, intersectionality, and post-psychiatry frameworks, the synthesis reveals a dominant biomedical paradigm, 36.7% of studies where clinical trials often lack disaggregated data on gender-diverse participants or fail to recruit them adequately due to structural barriers or oversight. In contrast, qualitative studies (32.7%) emphasized identity affirmation, somatic healing, and community care. Yet, only 10.2% of research meaningfully addressed intersecting oppressions. Three core themes emerged: clinical exclusion and epistemic violence, embodied healing through altered states, and grassroots queer psychedelic practices. The findings call for queer-affirming, intersectional, and decolonial methodologies that center lived experience and politicized healing. Reimagining psychedelic science through justice-based lenses is vital to ensuring these therapies serve as pathways to collective liberation rather than reinforce systemic marginalization. 2025 The Author(s). Open Access statement. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium for non-commercial purposes, provided the original author and source are credited, a link to the CC License is provided, and changes if any are indicated. -
Teleneuropsychometry Solution in Resource-Constrained Setting An Initial Experience in Adults With Brain Tumors
Background. Teleneuropsychometry constitutes a sophisticated technological innovation that enhances access to specialized neuropsychological services for patients situated in geographically remote or resource-limited contexts. When optimally utilized, teleneuropsychometry emerges as an advanced modality for bridging the gap between patient and neuropsychologists, facilitating timely preoperative cognitive evaluations. Methods. The study delineates two case reports of brain tumor patients who underwent teleneuropsychometric assessment prior to surgical interventions while also critically analyzing the complexities inherent in establishing such a service. Results. Both patients successfully completed the assessments with minimal assistance, providing valuable insights into their cognitive abilities. These insights enabled the medical team to customize surgical planning and anticipate potential risks. Conclusion. The findings reinforce the growing body of evidence supporting the feasibility of teleneuropsychometric assessments in a resource-constrained environment and highlights their broader applicability within the domains of neuro-oncology. 2025. Sekar et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC-BY). -
EEG Signatures of Resilience Across Individuals With High and Low Anxiety
Background. Over the past decade, psychological resilience has become a key focus in psychological science. However, most research relies on self-report and psychosocial assessments to explore resilience across different populations and contexts. Methods. This two-phased study examined resilience using self-reported measures and EEG recordings. Phase 1 involved a cross-sectional analysis of resilience and anxiety in young adults using correlation and regression analysis. Phase 2 utilized a grouped experimental design with EEG resting-state recordings to compare high- and low-resilience individuals. EEG data were collected using a 64-channel Geodesic Sensor Net, NetAmps 400 Amplifiers, and NetStation Acquisition 5.0 Software. Spectral analysis was performed for group comparisons. Results. Significant EEG differences emerged between high- and low-resilience groups in the anterior midline, right frontal, right central, left parietal, and right parietal regions. Alpha band differences were predominantly frontal and right-sided, while beta band differences were posterior and left-sided. Conclusions. Results of the two phased study bridge the gap between psychosocial measures and electrophysiological measures in the study of resilience and anxiety. A conceptual model based on the findings is outlined to guide future research to investigate the mechanism between resilience and clinical presentations of anxiety and/or depression at the psychosocial and electrophysiological level. Copyright: 2025. Gupta and Reddy. -
Does Fintech Usage Alter the Relationships Between Financial Literacy, Behaviour and Well-Being? Evidence from India
The emergence of fintech has rapidly transformed the way people manage their finances, yet its impact on personal financial outcomes remains relatively understudied. This study aims to examine how fintech usage (FTU) influences the relationship between financial literacy (FL) and financial well-being (FWB) through financial behaviour (FB) using a moderated mediation model. Using a proprietary dataset, the hypothesised relationships are analysed applying the PROCESS macro in IBM SPSS Statistics. The analysis reveals that FB is a partial mediator in the FL-FWB equation, while FTU negatively moderates the relationship between FL and FB. However, FTU does not significantly moderate the relationship between FL and FWB. The findings carry significant implications for policymakers and fintech service providers. Policymakers should strive to include a digital literacy component in financial education programs to better equip individuals to navigate todays digitalised society, while fintech companies should focus on designing products that complement users FL and facilitate the adoption of financially healthy behaviours. Copyright 2025 Shamli Prabhakaran, Mynavathi L. -
Phytofabricated Silver Nanoparticles Derived from Leea crispa Leaf Extract: Antituberculosis and Anticancer Activities
Aqueous extracts of Leea crispa used for producing silver nanoparticles (AgNPs) with the supplementation of the external capping substance, were determined by UV-Visible spectroscopy. The synthesized nanoparticles were examined for their antituberculosis and anticancer activities. The presence of phytoconstituents available for reducing silver ions and to form the AgNPs was confirmed using FTIR analysis. The XRD and TEM examination validated the AgNPs spherical particle shape and size of 15 to 85 nm and their face-centered cubic crystal form. Additionally, the FTIR spectrum revealed variation in the band values in the range 1384.0 to 3419.4 cm-1, respectively, and the EDX noted a strong band at 3 keV induced the presence of metallic silver. The AgNPs exhibited comparatively potential anti-tuberculosis activity (0.2 to 100 g/mL) respectively. Alternatively, various doses of AgNPs, 12.5 to 400 g/mL documented considerable activity towards the human breast cancer cell lines. The percentage of cell viability increased at 12.5g/mL and declined at 400 ng/mL concentrations of AgNPs solution. The AgNPs synthesized from L. crispa exhibited potential activity against life-threatening tuberculosis and cancer cells. 2025, North Carolina State University. All rights reserved. -
Green Purchase Intention: Understanding the Role of Environmental Beliefs, Health Consciousness and Perceived Behavioural Control; [Intenci de compra ecolica: comprensi do papel das crenzas medioambientais, a conciencia sanitaria e o control conductual percibido]
Consumer awareness of environmental issues has steadily increased, with environmental values significantly shaping purchase intentions. Essential to environmental sustainability are ecological packaging and ecological products. This study examines the impact of green product knowledge and green packaging on environmental beliefs, health consciousness, perceived behavioural control and consumer purchase intention, focusing on Visakhapatnam (India). A quantitative survey was conducted using purposive sampling, targeting individuals who are familiar with green products. Data from 306 respondents were analysed using the Statistical Package for the Social Sciences (SPSS) and AMOS. Structural equation modelling (SEM) was used to validate the conceptual framework. The results indicate that green product knowledge, environmental beliefs, health consciousness, and perceived behavioural control have an impact on green purchase intention, whereas green packaging does not. These findings emphasise the importance of psychological and informative factors for shaping environmentally friendly consumer behaviour. This study contributes to the existing literature on sustainable consumer behaviour, especially related to green fast-moving consumer goods (FMCG). It provides practical insight to marketers, decision-makers, and environmentalists who aim to promote environmentally friendly FMCG products. Additionally, focusing on significant psychological and behavioural factors allows for designing strategies that help the environment and improve public health. University of Santiago de Compostela. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) ) License -
I Woke Up Already Hurting: Postcolonial Affect in Tanya Tagaqs Split Tooth
Indigenous writing with postcolonial themes foregrounds the erasure and marginalization that result from colonialism. The genre-disrupting, coming-of-age novel Split Tooth (2018) by Inuit author Tanya Tagaq explores the personal and public life of a young Inuk woman from one of the Indigenous communities in the Canadian Arctic region. Split Tooth focuses on themes like the disappearances and deaths of Indigenous women, Inuit cultural settings, sexual assault, precarity, and violence. The novel meanders through emotions such as fear, shame, and grief, and can be analyzed through the theoretical framework of postcolonial affect. Postcolonial affect primarily examines the diverse emotional states of the colonized as indicators of the crisis that arises from colonization. The objective of the analysis is to highlight the delineation of affect in Split Tooth, as Tagaq blends the personal and the political in her narrative. Postcolonial affect is used for the theoretical examination of appropriation and violence that constitute the precarity of Inuit people, particularly women. 2025, Faculty of Philology, University of Bialystok. All rights reserved. -
Liquid gold: assessing groundwater quality at the historic Kolar gold fields, Karnataka, India
To assess ecological sustainability and resilience, it is necessary to periodically examine various ecological properties in areas with high pollution and contaminant risks. Kolar Gold Fields (KGF) in Kolar, Karnataka, showcases one of India's most contaminated zones because of the extensive gold mining and its lingering effects. In KGF, the quality of groundwater has been severely reduced as there exist extensive mining tailings, locally referred to as cyanide dumps, which have been neglected for several preceding years without proper disposal strategies. The current approach focuses on the water pollution caused by heavy metal deposits in the KGF region. Groundwater samples were sampled from Oorgam, an abandoned region in KGF, and subsequently filtered for water quality examinations. The investigation documented concentrations of several metals, including cadmium (0.068 0.0024 ppm), lead (0.288 0.0016 ppm), nickel (0.058 0.0047 ppm), and chromium (0.23 0.0235 ppm) and have met the standard specifications in accordance with World Health Organization (WHO). Prominent pH disparity was documented amongst the experimental samples, with a detectable pH drop in the aqua-purified water in comparison to the positive control. The test results imply that the water samples collected from KGF remain unpotable for consumption or irrigation due to the persistence of high levels of heavy metal concentration. This study underscores the urgent requirement for a remedial approach to ensure water safety for drinking and irrigation in the area. 2025 Brawijaya University. All rights reserved. -
An efficient ZnO and Ag/ZnO honeycomb nanosheets for catalytic green one-pot synthesis of coumarins through Knoevenagel condensation and antibacterial activity
This study pioneers the synthesis of porous Ag/ZnO nanosheets, focusing on their role as a catalyst in Knoevenagel condensation. Notably, these nanosheets display exceptional catalytic efficacy and captivating antibacterial properties. The research delves into the Ag/ZnO catalysts recyclability and proposes a potential reaction mechanism, marking the first comprehensive exploration of Knoevenagel condensation on porous Ag/ZnO nanosheets. Key findings underscore the successful synthesis of coumarin derivatives using various o-hydroxy benzaldehyde and 1,3-dicarbonyl compounds, with nano-Ag/ZnO serving as a catalyst via a monomode microwave-assisted approach. X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM) and UVVis spectroscopy were used in conjunction with other physicochemical methods to characterize the synthesized catalytic samples. The method boasts advantages such as high product yields, brief reaction durations, and the ability to reuse the catalyst for multiple cycles. The Ag/ZnO nanosheets, functioning as an acid catalyst, activate carbonyl groups and facilitate their interaction with methylene-containing active molecules. In addition, antibacterial activity assessments demonstrate the superior effectiveness of Ag/ZnO nanocomposites compared to ZnO nanosheets against Staphylococcus aureus germs. This multifaceted study not only advances catalytic synthesis but also unveils promising biological applications of porous Ag/ZnO nanosheets. 2024 Walter de Gruyter GmbH, Berlin/Boston.