Effect of different nanostructures of Cu2ZnSnS4 on visible light-driven photocatalytic degradation of organic pollutants

Surface-modified hydrophilic CZTS nanostructures have been successfully synthesized through hot injection method followed by bi-phase ligand exchange process. The as-synthesized CZTS nanoparticles (NPs) were characterized using the XRD, FTIR, TEM, BET, and UV–visible absorption spectroscopy. The mor...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2022, Vol.33 (2), p.894-906
Main Authors: Imla Mary, C., Senthilkumar, M., Manobalaji, G., Sai Prasanna, M., Moorthy Babu, S.
Format: Article
Language:English
Subjects:
Catalysts
Catalytic activity
Characterization and Evaluation of Materials
Chemistry and Materials Science
Illumination
Industrial textiles
Materials Science
Methylene blue
Morphology
Nanoparticles
Nanospheres
Nanostructure
Optical and Electronic Materials
Photocatalysis
Photodegradation
Pollutants
Recyclability
Rhodamine
Synthesis
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Summary:Surface-modified hydrophilic CZTS nanostructures have been successfully synthesized through hot injection method followed by bi-phase ligand exchange process. The as-synthesized CZTS nanoparticles (NPs) were characterized using the XRD, FTIR, TEM, BET, and UV–visible absorption spectroscopy. The morphology of the NPs has an important effect on the photocatalytic activity. CZTS NPs were synthesized with two different morphologies, i.e., nanospheres and nanoflakes. The photocatalytic degradation results indicate that the CZTS nanoflakes show more effective degradation of hazardous water pollutants, i.e., 98% degradation for methylene blue and 95% for rhodamine B within 80 min under 50-W LED visible light illumination. CZTS nanoflakes yield 60% degradation of industrial textile effluent under 50-W LED illumination. CZTS nanoflakes as catalyst effectively degrades the textile effluent under direct sunlight (average power density = 67 mW/cm 2 ) illumination within 80 min. Further, the photo-degradation mechanism, photostability and recyclability of the catalysts were also analyzed. The results indicate that the hydroxyl and superoxide radicals play an important role in the organic pollutant degradation process.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-07359-3