作　　者： (刘杰）; (徐梦达）; (任艳蓉）;

机构地区： 河南大学化学化工学院,河南开封475004

出　　处： 《广东化工》 2017年第16期116-119,134,共5页

摘　　要： 二氧化钛由于其耐腐蚀性,对生物无毒性,高效清洁等特点,已经在众多领域得到广泛的研究。尤其二氧化钛材料具有极强的催化氧化能力,在环境污染治理和有机物降解方面得到应用。但纯的二氧化钛由于禁带较宽,只能吸收太阳光中近紫外的光线。拓宽二氧化钛的光谱响应范围,实施对可见光的吸收利用,是二氧化钛基光催化材料面临的主要问题。二氧化钛上负载的金纳米颗粒形成的Au-TiO_2复合材料不仅提高了其氧化还原能力,而且具有良好的可见光催化性能。本文综述了Au-TiO_2的光催化原理,Au-TiO_2光催化活性的影响因素及其应用。 Titanium dioxide has been widely used in environmental pollution control and degradation of organic matter due to its non-toxic, non-toxic and efficient cleaning of the object after illumination and strong catalytic oxidation capacity. However, pure titanium dioxide only absorbs the sun near the ultraviolet to its wide bandgap. How to broaden the spectral response range of titanium dioxide and implement the absorption and utilization of visible light is the urgent problem of titanium dioxide-based photocatalytic materials. The Au-TiO2 composites formed by Au nanoparticles loaded on TiO2 not only improve their redox ability, but also have good visible photocatalytic performance. In this paper, the photocatalytic principle of Au-TiO2 , the influence factors of Au-TiO2 photocatalytic activity and its application are reviewed.

关 键 词： 二氧化钛 光催化 复合材料 可见光吸收