【作者】 李沙沙； 王静； 张颖；

【Author】 Shasha Li;Jing Wang;Ying Zhang;Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education;School of Chemistry and Chemical Engineering, Shaanxi Normal University;

【机构】 陕西师范大学化学化工学院应用表面与胶体化学教育部重点实验室；

【摘要】 Ag-AgCl复合纳米材料作为一种具有代表性的光催化剂,不仅具有贵金属纳米材料的表面等离子体共振效应和半导体纳米材料的光催化特性,而且具有结构稳定、合成成本低和对可见光具有光响应性等优异性能等^[1-3]。本文以反相悬浮聚合法制备聚羟甲基丙烯酰胺（PNHMA）的高分子微凝胶为模板,乙二醇为还原剂,原位还原得到负载纳米银的微米尺寸PNHMA/Ag复合材料,并通过与有机污染物CCl₄进行氧化还原反应制备得到具有光反应活性的PNHMA/Ag-AgCl复合材料（Fig.1）。研究表明,负载型Ag-AgCl复合材料对甲基橙的降解有较好的光催化活性,且微米尺寸载体有利于催化剂的回收利用。更多还原

【Abstract】 Ag-AgCl composite nanoparticles（NPs） are one type of the specific photocatalysts,which not only possess surface plasma resonance（SPR） characteristic of noble metal NPs and semiconductor photocatalytic performance,but also exhibit stable structure,low cost and photo-responsive characteristics for visible light.This paper proposed a novel method to prepare Ag NPs immobilized onto the poly（N-methylolacrylamide）（PNMA） micro-sized gels using ethylene glycol as a reducing agent.PNHMA/Ag-AgCl composite materials with photocatalytic activity were prepared by redox reaction with organic pollutant CCl₄.It was demonstrated that PNHMA/Ag-AgCl composite materials exhibited good photocatalytic activity for degradation of methyl orange（MO）.Meanwhile,polymer microgels as supporting are conducive to recycling and reuse of photocatalysts.更多还原