可见光响应的壳-核结构Ag/AgCl光催化剂性能  

Photocatalytic properties of visible light responsive shell-core type Ag/AgCl catalyst

作　　者：周建伟[1] 

机构地区：[1]新乡学院能源与燃料研究所,河南新乡453003

出　　处：《工业催化》2009年第10期69-72,共4页Industrial Catalysis

基　　金：河南省高校科技创新人才支持计划资助(2010HASTIT040);新乡市科技发展计划项目(08S069)

摘　　要：利用光化学还原法制备了Ag/AgCl壳-核结构的复合纳米粒子,以亚甲基蓝为模型降解物,研究了其可见光催化性能。结果表明,壳-核结构的Ag/AgCl纳米材料具有表面等离子效应,提高了其对可见光吸收和光催化活性。在可见光照射下,亚甲基蓝溶液浓度为10 mg·L^(-1),催化剂用量10 mg·L^(-1),光照60 min,亚甲基蓝降解率达95%,COD去除率为92%。Using AgCl nanoparticles as the crystal seeds and in the presence of trisodium citrate, Ag/ AgCl core-shell composite nanoparticles were synthesized by photochemical reduction method and their photocatalytic properties were investigated using methylene blue degradation as the model reaction. The results showed that the Ag/AgCl nanoparticles exhibited surface plasma resonance effect, effectively enhancing absorption of visible light and the photocatalytic activity, methylene blue degradation rate of 95% and COD removal rate of 92% were obtained under the following condition： catalyst dosage 10 mg·L-1, methylene blue concentration 10 mg ·L-1 , visible light irradiation for 60 min.

关 键 词：催化化学 Ag/AgCl纳米粒子 可见光 光催化降解 亚甲基蓝 表面等离子体 

分 类 号：O643.36[理学—物理化学] TQ034[理学—化学]