摘要
钨酸铋(Bi_2WO_6)是一类具有非金属含氧酸盐结构的新型光催化剂材料,其具备高稳定性、纳米结构、高催化性能等优点,但Bi_2WO_6的带隙相对较大(2.7e V),只能吸收450nm以下的光。通过对Bi_2WO_6的复合改性可以将其光吸收范围扩大,减少空穴电子对的复合,从而改善材料的光催化活性。首先介绍Bi_2WO_6的晶体结构和电子结构;其次对近几年Bi_2WO_6基光催化材料的合成方法、形貌特征光催化活性等方面的研究现状进行全面的综述分析;最后对Bi_2WO_6基光催化材料的发展趋势进行了展望。
Bismuth tungstate(Bi 2WO 6)is a kind of with nonmetal oxyacid salt structure new photocatalyst material,it has high stability,nano structure,the advantages of high catalytic performance,but the band gap of Bi 2WO 6relatively large(2.7 eV),only absorbs the light of 450 nm.Through the compound modification of Bi 2WO 6,the light absorption range can be expanded to reduce the compound of hole electron pair,so as to improve the photocatalytic activity of the material.Firstly,the crystal structure and electronic structure of Bi 2WO 6are introduced.Secondly,the research status of Bi 2WO 6based photocatalytic materials and the photocatalytic activity of photocatalytic activity were reviewed in this paper.Finally,the development trend of Bi 2WO 6based photocatalytic materials is prospected.
作者
吉亮亮
同帜
马敏敏
高占尧
Ji Liangliang;Tong Zhi;Ma Minmin;Gao Zhanyao(School of Environmental and Chemical Engineering,Xi'an Polytechnic University,Xi'an 710600,China)
出处
《山东化工》
CAS
2018年第12期43-50,共8页
Shandong Chemical Industry
关键词
钨酸铋
材料制备
光催化
bismuth tungstate
material preparation
photocatalytic
