金属掺杂氧化锌光催化性能的研究进展

Research Progress in Photocatalytic Properties of Metal-doped ZnO

纳米氧化锌因其具备来源广、廉价、无毒性、化学稳定能力好等优点而得到广泛研究,但可见光响应范围窄、量子效率低的问题已成为纳米氧化锌实际应用的瓶颈。引入适当的金属元素可取代氧化锌晶格里的锌,通过调整其能带结构扩大其光响应范围,抑制光生电子与空穴的结合,并提高光催化活性。综述了近年来利用金属掺杂提高光催化效率的研究成果,指出了存在的问题,并提出了今后的研究方向。

ZnO nanoparticles have been widely studied because they have the advantages of wide source,cheap,non-toxic and good chemical stability,but the problems of narrow visible light response range and low quantum efficiency have become bottlenecks for the practical application of ZnO nanoparticles.The introduction of appropriate metal elements can replace Zn in the ZnO lattice,expand its photoresponse range by adjusting its energy band structure,inhibit the binding of photogenerated electrons and holes,and improve photocatalytic activity.In this paper,the recent research results on the use of metal doping to improve photocatalytic efficiency were reviewed,the problems were pointed out,and future research directions were proposed.