纳米二氧化钛光催化材料研究现状

摘要

详细介绍了二氧化钛光催化材料的作用机理、形态结构、基本特性以及改性等研究现状.讨论了二氧化钛物相及混合物相、纳米尺寸效应对光催化性能的影响.分析了掺杂元素在二氧化钛中形成缺陷的机制,以及对光催化材料性能的影响等.总结了光催化材料在技术和应用方面存在的问题,并对其今后的发展方向进行了展望.%Mechanism, structure, basic properties of TiO2 photocatalyst as well as present researches on modification etc. Were introduced in detail.Influences of crystal phase,mixture phase,and nano-size effect on photocatalytic properties were dis-cussed.By analyzing the mechanisms of defects formed by doping elements, the effects of doping on photocatalytic properties were summarized.Problems existed in technique and application of photocatalytic material were reviewed.Meanwhile.the research ideas and directions in the future were indicated.