TiO2光催化降解有机污染物的研究进展  

Progress of photocatalytic degradation of organic pollutants over TiO 2

作　　者：王菠 萨嘎拉 徐爱菊 Wang Bo;Sagala;Xu Aiju(Inner Mongolia Autonomous Region Key Laboratory of Green Catalysis,College of Chemistry and Environment Science,Inner Mongolia Normal University,Hohhot 010022,Inner Mongolia,China)

机构地区：[1]内蒙古师范大学化学与环境科学学院,内蒙古自治区绿色催化重点实验室,内蒙古呼和浩特010022

出　　处：《工业催化》2020年第3期20-24,共5页Industrial Catalysis

基　　金：内蒙古自治区水环境安全协同创新培育中心项目(XTCX003);内蒙古自治区高等学校科学研究项目(NJZY19024);内蒙古师范大学科研基金项目(2017ZRYB002)。

摘　　要：二氧化钛具有优异的光电转换及物化性能,是半导体光催化材料的研究热点,广泛用于有机污染物降解研究。但二氧化钛禁带宽度较大,只能吸收紫外光辐射,太阳光利用率低,且二氧化钛的量子效率低。综述金属掺杂、非金属掺杂、共掺杂、半导体复合-异质结和染料敏化二氧化钛改性方法,拓宽TiO2的光响应范围,抑制载流子复合,提高光催化活性和能量转换效率,提高有机污染物降解率,实现可见光降解。Titanium dioxide has become a magnet in semiconductor photocatalytic materials and has been widely used in organic pollutant degradation research because of its excellent photoelectric conversion and physical and chemical properties.However,its wide forbidden band can only absorb ultraviolet radiation and the utilization rate of sunlight is low.Simultaneously,its own quantum efficiency is low.In this paper,a series of methods such as doping,morphological control,semiconductor recombination,and dye sensitization are referred to broaden the photoresponsive range of TiO 2,suppress carrier recombination,improve photocatalytic and energy conversion efficiency,and then enhance organic pollutant degradation rate,achieve visible light degradation.

关 键 词：催化化学 二氧化钛 光催化 有机污染物 

分 类 号：O644[理学—物理化学] TQ034[理学—化学]