Ag/Ag2MoO4/Bi2MoO6复合光催化剂的制备及其光催化性能

CHINESE JOURNAL OF INORGANIC CHEMISTRY(2021)

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Abstract
采用水热、化学沉积和原位光还原的方法成功制备了新型Ag/Ag2MoO4/Bi2MoO6三元复合光催化剂.通过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)和紫外可见漫反射光谱(UV-Vis DRS)等技术对材料的组成、形貌、光吸收特性和光电化学性能等进行系统分析.以四环素为目标污染物,研究Ag/Ag2MoO4/Bi2MoO6在可见光下的光催化性能.研究结果表明,相比于纯Ag2MoO4和Bi2MoO6,Ag的表面等离子体共振(SPR)效应显著拓宽了催化体系对可见光的吸收能力及响应范围.当Ag2MoO4理论负载量(质量分数)为24.6%时,Ag/Ag2MoO4/Bi2MoO6复合材料在20 min内可将四环素完全降解,且5次循环使用后仍保持较高的催化活性,表现出良好的循环稳定性.
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Key words
Ag2MoO4, Bi2MoO6, photocatalysis, degradation, antibiotic
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