期刊
JOURNAL OF MOLECULAR STRUCTURE
卷 1263, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molstruc.2022.133194
关键词
Azo dyes; RSM-CCD; Photodegradation; Galvanic wastewater; Sunlight; g-C3N4
资金
- Central Analytical Laboratory
In this study, a sustainable and highly efficient photocatalyst was engineered using galvanic wastewater and graphitic-carbon nitride. The photocatalyst exhibited a photodegradation efficiency of 98.3% under sunlight when used to degrade a mixture of azo dyes. Characterization of the photocatalyst confirmed its optical performance and the anchoring of galvanic wastewater on graphitic-carbon nitride.
In this study, a sustainable and highly efficient photocatalyst for the degradation of azo dyes using sun-light was engineered. For the first time, photocatalyst was prepared using galvanic wastewater (GWW) along with graphitic-carbon nitride (g-C3N4) by the sol-gel method. The ratio of GWW (1-5 mL) to g-C3N4 (0.1-0.5 g) was optimized to obtain the best photodegradation efficiency using Response Surface Methodology-Central Composite Design (RSM-CCD) model. A mixture of azo dyes (Tartrazine, Congo Red, Orange G, and Bismarck Brown R: 25 ppm each) was utilized to study the photodegradation under sun-light for 2 h. The optimum ratio of the photocatalyst was found to be 0.5 g g-C3N4 and 5 mL GWW which was used to photodegrade a mixture of azo dyes with an efficiency of 98.3% under sunlight. Characterization of the photocatalyst was performed using ICP-OES, UV-DRS, PL, GC-MS, TGA, XRD, XPS, FESEM, and FTIR to validate the optical performance and the anchoring of GWW on g-C3N4 . (c) 2022 Elsevier B.V. All rights reserved.
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