Au和Pd修饰TiO2光催化剂合成及光催化实验设计  

Design of experiment on synthesis and photocatalysis of TiO2 photocatalysts modified by Au and Pd

作　　者：王雁南[1] 李维尊[1] 孟凤林[1] 展思辉[1] WANG Yannan;LI Weizun;MENG Fenglin;ZHAN Sihui(College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China)

机构地区：[1]南开大学环境科学与工程学院

出　　处：《实验技术与管理》2019年第10期77-80,共4页Experimental Technology and Management

基　　金：国家自然科学基金青年科学基金项目(51708301);天津市自然科学基金项目(17JCZDJC39500);南开大学2018年自制实验教学仪器项目(2018nkzzyq16)

摘　　要：采用离子液体微波辅助法制备TiO2载体材料,并通过原位沉积法负载了贵金属纳米颗粒(Au)和钯(Pd);通过X射线衍射仪、扫描透射电子显微镜对样品进行表征,确定形貌及负载情况;通过亚甲基蓝的光催化降解与苯甲醇光催化氧化研究其可见光催化性能.结果表明,双金属Au和Pd且负载1%Au和1%Pd时获得最佳催化效果.该实验步骤简单、综合性强,涵盖众多知识点,便于学生系统掌握光催化实验知识.Titanium dioxide carrier materials are prepared by microwave-assisted ionic liquid method, and noble metal nanoparticles (Au) and palladium (Pd) are loaded by in-situ deposition method. Then the samples are characterized by the X-ray diffraction and scanning electron microscopy to determine the morphology and loading. Throough the photocatalytic degradation of methylene blue and photocatalytic oxidation of benzyl alcohol, study is carried out on visible photocatalytic activity. The results show that the best catalytic effect is obtained when bimetallic Au and Pd are loaded with 1% Au and 1% Pd. This experimental procedure is simple and comprehensive, which covers many knowledge points and is convenient for students to master the experimental knowledge of photocatalysis systematically.

关 键 词：TIO2 纳米材料 光催化剂 亚甲基蓝 光催化氧化 

分 类 号：TB383[一般工业技术—材料科学与工程]