环境领域的二氧化钛基光催化剂负载和改性技术研究进展

发布时间：2018-03-20 15:45

本文选题：二氧化钛　切入点：共掺杂　出处：《化工进展》2017年11期 　论文类型：期刊论文

【摘要】：在环境问题日益加剧的今天,二氧化钛基光催化剂因其具有优异的性质,是光催化领域中人们研究的热点。二氧化钛基光催化剂研究包括能源领域的光解水制氢、太阳能电池、水体内污染物的去除以及CO_2资源化利用等方面。本文综述了近年来国内外二氧化钛的负载和改性技术的研究进展。通过硅土类、聚合物类、玻璃类和碳材料等载体来负载二氧化钛,可有效解决其易流失、难回收和容易团聚的问题;以非金属掺杂、贵金属沉积、过渡金属离子掺杂、染料敏化和半导体材料复合等对二氧化钛进行改性研究,可有效减小二氧化钛半导体材料禁带宽度,能够有效降低电子和空穴复合的概率,增强二氧化钛基催化剂的可见光活性。并对未来的二氧化钛基光催化剂在环境中污水处理及大气有机污染物治理应用研究方面进行了展望。
[Abstract]:In the growing environmental problems today, TiO2 based photocatalyst because of its excellent properties, is one of the hot spots in the photocatalysis field. The research of TiO2 based photocatalysts including water photolysis, the energy field of the solar cell, pollutants removal and CO_2 utilization were summarized in this review. And modification technology of titanium dioxide at home and abroad in recent years. Through the load silica, polymers, glass and carbon material carrier to TiO2, which can effectively solve the problem of the easy loss, difficult recovery and easy agglomeration; with non metal doping, noble metal deposition, transition metal ion doping and dye sensitization the semiconductor composite titania, titania materials can effectively reduce the band gap, can effectively reduce the probability of the electron and hole composite, The visible light activity of titanium dioxide based catalyst is enhanced. The future application of TiO2 based photocatalyst in sewage treatment and atmospheric organic pollutants treatment in the environment is prospected.

【作者单位】：内蒙古工业大学化工学院;
【基金】：国家自然科学基金项目(21266016)
【分类号】：O643.36;O644.1

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