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发表刊物：Journal of Materials Science and Technology

刊物所在地：Elsevier

关键字：Photocatalysis; S-scheme; Heterojunction; Bi2WO6; Sulfamethazine

摘要：The S-scheme heterojunction has garnered increasing attention due to its remarkable oxidation capacity and efficient separation of photogenerated carriers. In this study, a one-pot glycerol-assisted hydrothermal process was utilized to successfully synthesize S-scheme heterojunction photocatalysts comprising basic bismuth nitrate (BBN) and bismuth tungstate (BWO). Interestingly, the BBN/BWO heterogeneous photocatalysts exhibited the highest photocatalytic properties. The optimized product achieved the degradation of sulfamethazine (SMZ) within 1 h, with a kinetic constant (k) value of 0.05818 min-1. The degradation process was influenced significantly by ·O2- and h+ species. To determine the degradation pathway of SMZ in the presence of BBN/BWO-0.6, liquid chromatography-mass spectrometry (LC-MS) analysis was performed, which revealed a decrease in the toxicity of intermediates and products. The enhanced photocatalytic activity can be attributed to the internal electric field (IEF) of the S-scheme heterojunction between BBN and BWO, effectively promoting the separation of photogenerated carriers. This research presents a viable approach for developing S-scheme heterojunctions in SMZ photodegradation and other environmental applications.

全部作者：Meng Dai,Li Xiang,Shan Zhao,Shuguang Wang

第一作者：Wenhan Chen

论文类型：期刊论文

通讯作者：Zuoli He

学科门类：工学

一级学科：环境科学与工程

文献类型：J

卷号：171

页面范围：185-197

字数：8000

是否译文：否

发表时间：2024-02-01

收录刊物：SCI