水热合成Bi_2WO_6/SC光催化剂及其光催化脱硝性能研究  

Hydrothermal synthesis of Bi_2WO_6/SC catalyst and its photo-catalytic performance in NO removal

作　　者：贾腾飞[1] 王亮[1] 李春虎[1] 闫欣[1] 杨微微[1] 冯丽娟[1] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100

出　　处：《燃料化学学报》2015年第6期735-739,共5页Journal of Fuel Chemistry and Technology

基　　金：青岛市科技发展计划(13-1-4-191-jch);山东省博士后创新基金(201203105)

摘　　要：以活性半焦(SC)为载体,采用水热法合成新型可见光催化剂Bi2WO6/SC,利用SEM、BET、XRD、FT-IR和紫外可见漫反射(UV-vis)光谱等系列手段对所制备的样品进行了表征,并以可见光(λ>400 nm)为光源,模拟烟气中的NO为氧化脱除对象,进行光催化活性测试。结果表明,通过水热法合成的Bi2WO6具有微米花形状,且光响应波长已扩展到400 nm以上的可见光区,Bi2WO6/SC光催化脱硝剂性能最好,反应4 h后脱硝率仍高于70%。A novel Bi2WO6/ SC photo-catalyst was synthesized by hydrothermal method with semi-coke（ SC）as the support. The as-prepared catalyst was characterized by SEM,BET,XRD,FT-IR and UV-vis diffuse reflectance spectra; its photo-catalytic activity in NO oxidation under visible light irradiation（ λ 〉400 nm） was evaluated. The results indicate that Bi2WO6 obtained by hydrothermal method displays micro-flower structure and absorption spectrum toward the visible light region above 400 nm. The Bi2WO6/ SC catalyst exhibits excellent photo-catalytic activity in NO removal; NO conversion remains higher than 70% after reaction under irradiation for 4 h.

关 键 词：钨酸铋 烟气 光催化 脱硝 

分 类 号：X511[环境科学与工程—环境工程]