构建可见光驱动的缺陷型Bi_(2)WO_(6)用于光催化降解磺胺甲恶唑  

Construction of Visible-Light Driven Defective Bi_(2)WO_(6) for Photocatalytic Degradation of Sulfamethoxazole

作　　者：左卫元 谭微 陀丽媚 梁敏 仝海娟 欧阳辉祥 ZUO Weiyuan;TAN Wei;TUO Limei;LIANG Min;TONG Haijuan;OUYANG Huixiang(Guangxi Key Laboratory of Urban Water Environment,College of Chemistry Environment Engineering,Baise University,Baise 533000,China;Department of Food and Chemical Engineering,Liuzhou Institute of Technology,Liuzhou 545616,China)

机构地区：[1]广西城市水环境重点实验室,百色学院化学与环境工程学院,广西百色533000 [2]柳州工学院食品与化学工程学院,广西柳州545616

出　　处：《水处理技术》2025年第3期96-101,共6页Technology of Water Treatment

基　　金：广西自然科学基金项目(2025GXNSFAA069726,2022GXNSFBA035468);百色市科学研究与技术开发计划课题(百科20232048,百科20250309);大学生创新创业训练计划项目(202310609010);广西一流学科建设项目资助(农业资源与环境)。

摘　　要：开发高性能催化剂是光催化降解技术的核心议题之一。本研究以CTAB为表面活性剂,通过简单的溶剂热法合成了一种具有氧缺陷的Bi_(2)WO_(6)光催化材料。以一系列表征手段对所合成的催化剂的结构、形貌和光学性能进行了测试,并以磺胺甲恶唑(SMX)为模拟污染物,评估了所制备的缺陷型Bi_(2)WO_(6)的光催化活性。结果表明,所制备的缺陷型Bi_(2)WO_(6)为微球形貌,相比Bi_(2)WO_(6),其具有更大的光响应范围。在可见光照射100 min条件下,其对SMX的降解率为90.2%。经6次循环使用后,缺陷型Bi_(2)WO_(6)对SMX的降解率仍未表现出明显下降。机制分析表明缺陷型Bi_(2)WO_(6)增强的光催化活性可归因于其内部存在的氧缺陷提升了催化剂的光吸收范围以及光生电荷的分离能力。本研究可为新型光催化剂的设计和合成提供新的参考。The development of high performance catalysts is one of the core issues of photocatalytic degradation technology.In this study,Bi_(2)WO_(6) photocatalysts with oxygen defect was synthesized by solvothermal method using CTAB as surfactant.The structure,morphology and optical properties of the as-synthesized catalyst were tested by a series of characterization methods,and the photocatalytic activity of the prepared defective Bi_(2)WO_(6) was evaluated using SMX as a simulated pollutant.The results showed that the obtained defective Bi_(2)WO_(6) exhibits microsphere morphology and has a larger optical response range than Bi_(2)WO_(6).Under the condition of visible light irradiation for 100 min,the degradation efficiency of SMX was 90.2%.After 6 cycles,the degradation rate of SMX by defective Bi_(2)WO_(6) did not decrease significantly.The mechanism analysis showed that the enhanced photocatalytic activity of defective Bi_(2)WO_(6) could be attributed to the oxygen defect in Bi_(2)WO_(6),which improved the light absorption range and photogenerated charge separation ability of the catalyst.This study can provide a reference for the design and synthesis of novel photocatalysts.

关 键 词：Bi_(2)WO_(6) 磺胺甲恶唑 光催化 降解 

分 类 号：X703[环境科学与工程—环境工程]