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复合磁性纳米材料可见光催化降解染料废水性能研究 被引量:1

Study on visible-light photocatalytic degradation of dye waste water with composite magnetic nanomaterials
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摘要 采用水热法,沉淀法和光致还原联合的方法制备Ag/AgCl/Fe_3O_4磁性纳米复合光催化材料,以扫描电子显微镜(SEM)、X-射线衍射(XRD)、紫外-可见光吸收光谱(UV-vis)等手段对催化剂的晶型结构、元素组成、形貌和光吸收特性等性能进行表征和分析。并且选择亚甲基蓝(MB)作为降解对象考察了Ag/AgCl/Fe_3O_4的可见光催化活性。实验结果表明:与纯AgCl和Fe_3O_4相比,Ag/AgCl/Fe_3O_4表现出优异的可见光光催化性能,主要是由于Ag纳米颗粒的表面等离子共振效应,提高可见光吸收性能的同时,可有效抑制光生电子空穴对的复合,从而提高其光催化活性。当催化剂经5次循环使用后,MB的降解率从100%逐渐降到90%。催化剂的活性略微降低,Ag/AgCl/Fe_3O_4具有较好的循环使用稳定性。
作者 李晶宇 李明 Li Jingyu;Li Ming
出处 《河南水利与南水北调》 2019年第3期83-85,共3页 Henan Water Resources & South-to-North Water Diversion
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