Abstract In this work, a novel sheet-like BiVO4/Bi4V2O11 composite was successfully prepared using an eco-friendly and facile hydrothermal technique. Under solar simulator light irradiation, the new catalytic system of BiVO4/Bi4V2O11 composite has been structured to achieve the model contaminant sulfamethazine removal, and BiVO4/Bi4V2O11 composite exhibited excellent photo-catalytic ability and cycling capability for the degradation of the model contaminant sulfamethazine; the photodegradation rate of sulfamethazine was close to 95% after 60 min. The results of active species trapping experiments revealed that •O2− contributed considerably towards sulfamethazine degradation. The degradation pathways of sulfamethazine were investigated using a liquid chromatography mass spectrometer (LC-MS), which indicated that the photolytic degradation of sulfamethazine was achieved through cleavage of the S–N and S–C bonds. This work provides new ideas of synthesizing a BiVO4/Bi4V2O11 heterogeneous photocatalyst and building a powerful photocatalytic system for eliminating trace antibiotic micropollutants.

中文翻译：

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轻松合成片状 BiVO4/Bi4V2O11 复合材料以增强光催化性能

摘要 在这项工作中，采用环保、简便的水热技术成功制备了一种新型片状 BiVO4/Bi4V2O11 复合材料。在太阳模拟器光照射下，BiVO4/Bi4V2O11复合材料构建了新型催化体系实现了模型污染物磺胺二甲嘧啶的去除，BiVO4/Bi4V2O11复合材料对模型污染物磺胺二甲嘧啶的降解表现出优异的光催化能力和循环能力；60 min后磺胺二甲嘧啶光降解率接近95%。活性物质捕获实验的结果表明， •O2- 对磺胺二甲嘧啶降解有很大贡献。使用液相色谱质谱仪 (LC-MS) 研究了磺胺二甲嘧啶的降解途径，这表明磺胺二甲嘧啶的光解降解是通过 S-N 和 S-C 键的断裂实现的。这项工作为合成BiVO4/Bi4V2O11多相光催化剂和构建强大的光催化系统以消除痕量抗生素微污染物提供了新思路。