表面光催化基元反应研究进展  

Elementary reactions in surface photocatalysis

作　　者：郭庆[1] 周传耀[1] 马志博 任泽峰[1] 樊红军[1] 杨学明[1] Qing Guo, Chuanyao Zhou, Zhibo Ma, Zefeng Ren, Hongjun Fan, Xueming Yang(State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Chin)

机构地区：[1]中国科学院大连化学物理研究所分子反应动力学国家重点实验室,大连116023

出　　处：《中国科学：化学》2018年第2期114-126,共13页SCIENTIA SINICA Chimica

基　　金：国家重点基础研究发展规划(编号:2013CB834605);国家自然科学基金(编号:21673235;21403224;21688102);中国科学院青年促进会资助项目

摘　　要：在过去的二十年里,人们对半导体光催化剂表面所发生的光催化产氢和有机物降解等反应进行了广泛的研究.尤其是在超高真空条件下,利用不同的表面科学方法对不同种类的小分子在TiO_2表面的光催化反应机理进行了细致的研究,深化了对光催化过程中所发生的基元反应的认知.本文主要综述了几种重要的小分子(水、甲醇和醛类)在不同TiO_2表面的光催化反应机理的最新研究进展,这些研究结果不仅加深了对表面光催化基元过程的认识,还将促使该领域衍生出新的研究方向.在这些结果的基础上,本文提出了一种基于动力学的光催化模型.Photocatalytic hydrogen evolution and organic degradation on oxide materials have been extensively investigated in the last two decades. Great efforts have been dedicated to the study of photocatalytic reaction mechanisms of a variety of molecules on TiO_2 surfaces by using surface science methods under UHV conditions,providing fundamental understanding of surface chemical reactions in photocatalysis. In this review, we have summarized the recent progress in the studies of photocatalysis of several important species（water, methanol and aldehydes） on different TiO_2 surfaces. The results of these studies have provided us deep insights into the elementary processes of surface photocatalysis and stimulated a new frontier of research in this area. Based on the results of these studies, a new dynamics based photocatalysis model is also discussed.

关 键 词：二氧化钛 表面光催化 非绝热过程 

分 类 号：O643.32[理学—物理化学]