摘要
在液-固相光催化反应体系,采用自旋捕捉-电子自旋共振(ESR)技术,进行可见光响应光触媒的测试研究。在光催化反应体系中加入自由基捕捉剂5-二乙氧基磷酰基-5-甲基-1-吡咯啉-氮氧化物(DEPMPO),测试不同的光辐射条件下溶液的ESR波谱,测试跟踪光催化反应过程中自由基的动态。本法简便、准确、快捷,可用于光触媒性能的测试以及光催化反应机理的研究。
The testing of photocatalyst in response to visible light in a liquid - solid photocatalysis reaction system was studied using the spin trapping-electron spin resonance （ESR） technique. The spin trapping reagent, 5 - diethoxy phophoryl - 5- methyl - 1 - pyrroline - N - oxide （DEPMPO） was added into the photocatalysis reaction system to test the ESR spectrum in aqueous solution under different conditions of light radiation and to test and track the dynamic of free radical during the process of photocatalysis reaction. The method is convenient, concise and rapid. It can be applied to testing the photocatalyst performance and to studying the photo mechanism of catalysis reaction.
出处
《分析测试学报》
CAS
CSCD
北大核心
2005年第5期62-65,共4页
Journal of Instrumental Analysis
基金
国家863计划项目(2004AA302100)
