【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。更多还原

【Abstract】 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 TiO₂,suppress carrier recombination,improve photocatalytic and energy conversion efficiency,and then enhance organic pollutant degradation rate,achieve visible light degradation.更多还原