ItemArticle

Removal of high concentration Cr (VI) through the synergetic effect of CuInS?/Ni-MoS?/NrGO Z-scheme heterojunction and Deinococcus radiodurans R1 nano-biohybrid system

Title
Removal of high concentration Cr (VI) through the synergetic effect of CuInS?/Ni-MoS?/NrGO Z-scheme heterojunction and Deinococcus radiodurans R1 nano-biohybrid system
Creator
Mishra, Soumya; Sahoo, Naresh Kumar; Sahoo, Satyanjib; Sahoo, Gayatree Sanjibita; Sahoo, Prasanta Kumar; Pradhan, Sanghamitra; Thomas, Sabu
Description
The efficient removal of high-strength hexavalent chromium [Cr (VI)] from industrial effluents continues to be a significant challenge. This study introduces a nano-biohybrid approach that combines a CuInS?/Ni-MoS?/NrGO Z-scheme heterojunction with live biomass of Deinococcus radiodurans R1 under anaerobic conditions. This combination aims to enhance the reductive sorption of Cr (VI). A Z-scheme heterojunction composed of CuInS?, Ni-MoS?, and NrGO was synthesized using the hydrothermal technique. The structural and morphological properties of the synthesized nanomaterials (NMs) were examined through various techniques, including XRD, FT-IR, UV-VIS DRS, FE-SEM, EDX, PL, XPS, Raman spectroscopy, and Mott-Schottky analysis. The CuInS?-Ni-MoS?-NrGO nanocomposite achieved nearly 97% removal of Cr (VI) at an initial dose of 50 mg/L within 3 h, which is almost three times more effective than the individual NMs CuInS?, Ni-MoS?, and NrGO. Further, applying the nano-biohybrid synergetic system enabled complete removal of Cr (VI) even at 200 mg/L, enhancing its removal capacity by 2.5-fold higher than the bare nanocomposite. The Langmuir isotherm model fits well with the experimental data, confirming homogeneous monolayer adsorption with a maximum Cr (VI) reductive sorption capacity of 333 mg/g. The intra-particle diffusion model analysis indicated that external mass transfer plays a dominant role in controlling the overall Cr (VI) sorption process. Furthermore, kinetic studies revealed that the Cr (VI) removal follows a pseudo-second-order model, suggesting chemisorption as the primary mechanism. The nanocomposite exhibited strong reusability, maintaining 86.5% Cr (VI) removal efficiency over 4 cycles. These results highlight the potential of nano-biohybrid systems as an efficient strategy for Cr (VI) remediation from contaminated wastewater. 2026 Elsevier B.V.
Source
Separation and Purification Technology;Volume;390;Issue;;Article No.;136947;
Date
01-01-2026
Publisher
Elsevier B.V.
Subject
Chromium removal mechanism; Cr (VI) reductive sorption; CuInS2/Ni-MoS2/NrGO; Deinococcus radiodurans R1; Nano-biohybrid system; Photo catalyst; Z-scheme
Coverage
Mishra S., Department of Chemistry, Environmental Science and Technology Program, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), BBSR, 751030, India; Sahoo N.K., Department of Chemistry, Environmental Science and Technology Program, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), BBSR, 751030, India; Sahoo S., Department of Chemistry, Environmental Science and Technology Program, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), BBSR, 751030, India; Sahoo G.S., Department of Chemistry, Environmental Science and Technology Program, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), BBSR, 751030, India; Sahoo P.K., Environmental Hydrology Division, National Institute of Hydrology, Jalvigyan Bhawan, Roorkee, 247667, India; Pradhan S., Department of Chemistry, Environmental Science and Technology Program, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), BBSR, 751030, India; Thomas S., Trivandrum Engineering Science & Technology Research Park (TrEST Research Park), Kerala, India, Department of Physics & Electronics, CHRIST (Deemed to be University), Bangalore, India, School of Nanoscience and Nanotechnology, Mahatma Gandhi University, Kerala, Kottayam, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 13835866; CODEN: SPUTF
Format
online
Language
English
Type
Article

Citation

Mishra, Soumya; Sahoo, Naresh Kumar; Sahoo, Satyanjib; Sahoo, Gayatree Sanjibita; Sahoo, Prasanta Kumar; Pradhan, Sanghamitra; Thomas, Sabu, “Removal of high concentration Cr (VI) through the synergetic effect of CuInS?/Ni-MoS?/NrGO Z-scheme heterojunction and Deinococcus radiodurans R1 nano-biohybrid system,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 17, 2026, https://archives.christuniversity.in/items/show/22457.

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