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纳米TiO2作为一种光催化材料,在环境保护、光能转换、医药行业、工业催化等领域有着极为广泛的用途。较低的光量子效率以及短波长高能量的激发源是限制TiO2使用范围的主要原因,进行掺杂改性以实现可见光响应和提高量子效率是提高光催化剂活性的重要方法,但是单组分的掺杂不能同时提高这两种因素,因此多组分掺杂变的重要。本文综述了近几年来利用两种元素协同掺杂来改善TiO2光催化活性方面所取得的进展。
As a photocatalytic material, nano-TiO2 has a very wide range of applications in environmental protection, light energy conversion, pharmaceutical industry, industrial catalysis and other fields. The lower photon quantum efficiency and the excitation energy of short wavelength and high energy are the main reasons for limiting the use range of TiO2. Doping and modification to achieve visible light response and quantum yield are important methods to increase photocatalytic activity. However, single-component doped Miscellaneous can not improve both these two factors, so multi-component doping becomes important. This review summarizes the progress made in recent years in improving the photocatalytic activity of TiO2 by co-doping two kinds of elements.