Construction of 2-aminobenzothiazole (ABT)-g-CN/WO composites with enhanced visible-light photocatalytic activity and properties

• Published in: New journal of chemistry 2023-07, Vol.47 (27), p.1258-12588
• Main Authors: Li, Pengpeng, Li, Fangfang, Su, Fu
• Format: Article
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/d3nj01686b

In this work, 2-aminobenthiol (ABT) small molecules were doped with g-C 3 N 4 /WO 3 via calcination to improve the visible light catalytic ability. Characterization methods such as SEM, TEM, and XPS were applied to explore the properties of the materials. A characterization study using UV diffuse reflection spectroscopy confirmed that the absorption capacity of 1 wt% ABT/CN in the visible region enhanced significantly after doping the 2-ABT molecule. TC (tetracycline) was used as the target pollutant to study the catalyst. The results showed that compared with g-C 3 N 4 , WO 3 , 1 wt% ABT-g-C 3 N 4 , and g-C 3 N 4 /WO 3 materials, the 1 wt% ABT-CN/WO 3 catalyst showed a more robust photocatalytic performance in the degradation of TC under visible light irradiation. The degradation rate of TC is 87.78% within 40 min. The composition of free radicals in the system and the role of ABT in the reaction process were analyzed, and the possible degradation mechanism was proposed. ABT doping improves the band gap and electron-hole separation efficiency of g-C 3 N 4 , and ethanol enhances the photocatalytic activity of ABT/CN/W composites.