Journal
JOURNAL OF CHEMICAL SCIENCES
Volume 133, Issue 2, Pages -Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12039-021-01903-8
Keywords
ZnO/g-C3N4; 4-nitrophenol; Rhodamine B; Abatement; Mineralization
Categories
Funding
- IITH
- Deanship of Scientific Research at King Khalid University through the General Research Project [G.R.P. 317/1442]
- DST-Science and Engineering Research Board (SERB) [PDF/2016/003661]
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ZnO and g-C3N4 were successfully synthesized and impregnated to form a composite material with excellent catalytic activity for wastewater treatment. Among the catalysts, 20 wt% ZnO/g-C3N4 showed the best performance with 67% and 75% mineralization rates for Rhodamine B and 4-nitrophenol, respectively.
In this study, pure ZnO and g-C3N4 were synthesized using coprecipitation and simple calcination methods, respectively. Further, ZnO is impregnated on a g-C3N4 surface with 10, 20 & 30 weight percentages, respectively. Besides, these materials are characterized by various physicochemical techniques such as PXRD, UV-Vis-DRS, TEM, PL, and FT-IR, etc. Vitally, as-prepared materials, catalytic activity was tested for removal of Rhodamine B and 4-nitrophenol from the wastewater under visible light irradiation. Among all these catalysts, 20 wt% ZnO/g-C3N4 showed better activity and showed 67% and 75% mineralization. Graphic abstract The graphical abstract simply represents the proposed mechanism for photocatalytic removal of 4-nitrophenol and Rhodamine B with ZnO/g-C3N4 composite. ZnO was a hexagonal plate type structure and g-C3N4 shows a sheet-type structure.
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