【摘要】 光催化技术在环境保护领域备受青睐,TiO₂光催化剂化学性质稳定、毒性低、便宜,但禁带宽度较大、电子空穴复合率较高。为提高TiO₂的光催化性能,以金属离子掺杂改性TiO₂是最有效方法之一。综述了近几年国内外金属离子掺杂改性TiO₂的研究进展,分析了过渡金属掺杂,稀土金属掺杂,共掺杂改性的作用机理;并且对目前的金属掺杂TiO₂表征技术进行综述,为了解光催化的基本方面提供一个新的视角,并对开发性能优良的新型光催化剂具有启发意义。更多还原

【Abstract】 Photocatalytic technology is favored in the field of environmental protection, while TiO₂ photocatalyst has the advantages of stable chemical properties, low toxicity, and cheapness, but the large band gap and high electron-hole recombination rate. In order to improve the photocatalytic performance of TiO₂, metal ion doping modification of TiO₂ is one of the most effective methods. The research progress of metal ion doping modified TiO₂ at home and abroad in recent years is reviewed. The mechanism of transition metal doping, rare earth metal doping and co-doping modification is analyzed. And the current characterization technology of metal doped TiO₂ is reviewed. It is therefore anticipated that this review can provide a novel perspective to understand the fundamental aspects of photocatalysis and inspire the development of new photocatalysts with superior performances.更多还原