Fe^(3+)掺杂光催化剂改性机制的研究进展

Research progresses on modification mechanisms of Fe^(3+)-doped photocatalysts

Fe元素是一种廉价无毒、储量丰富的过渡金属元素,以掺杂等方式与光催化剂结合时能够有效提高光催化能力。Fe^(3+)掺杂光催化剂还能够有效提高Fenton反应中H_(2)O_(2)的利用率,降低成本和解决二次污染问题。综述了近年来Fe^(3+)掺杂光催化剂在界面电荷转移、替位式掺杂和类Fenton反应三种改性机制方面的研究进展,分析了三种机制的作用机理及适用范围,并对Fe^(3+)掺杂光催化剂今后的研究方向和重点进行了展望。

Fe is an inexpensive,non-toxic and abundant transition metal element that can be combined with photocatalysts by means of doping and other means to effectively enhance their photocatalytic activity.In addition,Fe^(3+)-doped photocatalyst can also effectively improve the utilization of H_(2)O_(2) in Fenton reaction,which can reduce the cost and solve the problem of secondary pollution.In this work,the research progresses on three modification mechanisms of Fe^(3+)-doped photocatalysts,namely,interfacial charge transfer,substitutional doping and Fenton-like reaction,are discussed,and the action mechanisms and the scopes of application are further analysed.The future research directions and priorities of Fe^(3+)-doped photocatalyst are also proposed.