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Advanced Photo‐Responsive (II‐VI) Semiconductor Nanoparticle for Efficient Elimination of Carcinogenic Dye and Waterborne Pathogens
Author(s) -
Chatterjee Anuja,
Mondal Indrajit,
Bag Neelanjana,
Halder Piyali,
Banerjee Somtirtha Kool,
Roy Sagnik Sinha,
Pradhan Shrabani,
Chattopadhyay Brajadulal,
Kool Arpan,
Das Sukhen
Publication year - 2025
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202500571
Abstract The increasing contamination of water by hazardous dyes and pathogenic bacteria necessitates advanced treatment solutions. This study introduces hexagonal zinc oxide nanoflakes (ZnO NFs) synthesized via co‐precipitation and optimized through 15 h vacuum exposure (S15), enhancing structural defects, reducing crystallite size, and tuning the bandgap (3.17 eV) for superior photocatalytic performance. Under visible light, S15 achieved 96.2% Congo red (CR) dye degradation within 120 min (rate constant, k = 0.02734 min −1 ) and also exhibited high removal efficiencies in drinking water (92.35%) and wastewater (95.5%). The accelerated generation of · OH radicals under visible light stimulation enhances the catalytic process, enabling effective bacterial eradication. This approach achieved ∼94% and 96% reduction of viable Escherichia coli ( E. coli ) and Enterococcus faecalis (E. faecalis) , respectively, revealing its potential as a novel antibacterial nanomaterial. The results establish ZnO NFs as a promising dual‐functional material for efficient and sustainable wastewater treatment by means of simultaneous photocatalytic removal of dyes and pathogenic bacteria in both industrial and domestic settings.

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