原位衰减全反射表面增强红外光谱实验技术  

Experimental Technique of In-situ Attenuated-Total-Reflection Surface-Enhanced Infrared Spectroscopy

作　　者：李国防[1] 瞿鹏[1] 徐茂田[1] 

机构地区：[1]商丘师范学院化学系,商丘476000

出　　处：《化学通报》2009年第8期733-737,共5页Chemistry

基　　金：国家自然科学基金项目(20775047/B0502)资助

摘　　要：介绍了原位研究电极/溶液界面反应的技术——衰减全反射表面增强红外光谱实验技术(ATR-SEIRAS)的产生背景和工作原理,重点描述了ATR-SEIRAS实验技术的关键:光谱电化学池的构造和薄膜电极的制备。与IRAS相比,ATR-SEIRAS技术可以更容易消除溶剂的背景吸收,获得较高的表面灵敏度,而且允许物质在电极表面自由扩散。与循环伏安相结合,利用ATR-SEIRAS技术可以实时监测电极/溶液界面间的反应。选择了利用ATR-SEIRAS实验技术原位研究功能表面的构造和性质、分子识别和反应中间体的形成等方面的应用实例,分析了ATR-SEIRAS实验技术的研究方向。Appearance background and its working mechanism of attenuated-total-reflection surface-enhanced infrared spectroscopy（ATR-SEIRAS）which enable on-line monitoring of surface electrochemical reactions of the electrode/solution interface were introduced. The key technique of ATR-SEIRAS, that is, the configuration of spectroelectrochemical cells and the preparation method of metal film electrode for ATR-SEIRAS was described chiefly. The solution background can be cancelled out much more easily than in the case of IRAS, and the high surface sensitivity and the free mass transport on the electrode surface can be achieved by the use of ATR-SEIRAS. ATR-SEIRAS technique can be utilized to investigate the real reaction of the electrode/solution interface in conjunction to cyclic voltammetry. Applications directed toward electroebemieal research, including on-line monitoring fabrication and characterization of functional surfaces, molecular recognition at the electrochemical interface, and reactive intermediate authentication and so on, in the late years were reviewed. And finally the latest research trends about ATR-SEIRAS were analyzed.

关 键 词：衰减全反射表面增强红外光谱技术 光谱电化学池 金属薄膜电极 

分 类 号：O657.33[理学—分析化学]