Ag/AgCl/MoO3复合材料的制备及其光催化性能  

Preparation and Photocatalytic Performance of Ag/AgCl/MoO3 Composites

作　　者：柯倩倩 常海洲[1] 黄彪 张兵 李俊旗 KE Qianqian;CHANG Haizhou;HUANG Biao;ZHANG Bing;LI Junqi(University of Shanghai for Science and Technology,College of Science,Shanghai 200093,China)

机构地区：[1]上海理工大学理学院,上海200093

出　　处：《材料科学与工程学报》2020年第2期238-244,324,共8页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(21276156)。

摘　　要：利用水热合成法合成六方相晶体结构的MoO3微晶,采用沉淀-沉积法和光致还原法将Ag/AgCl纳米颗粒沉积于MoO3微晶上,从而制得新型的Ag/AgCl/MoO3异质结光催化剂。通过包括紫外-可见漫反射吸收光谱(UV-Vis-DRS)等方法在内的各种测试技术对催化剂结构、形貌等进行表征。并以苯并噻吩(BT)为目标硫化物,研究在可见光下催化剂用量、氧化剂用量、前驱体浓度及反应时间对BT的氧化脱除的影响。研究结果表明:Ag/AgCl/MoO3异质结在催化剂用量为1.5g/L,氧化剂用量O∶S=4,前驱体Mo(VI)浓度为0.07mol/L,可见光照射2.5h后,光催化氧化脱硫活性达92%。MoO3 crystallites with hexagonal crystal structure were successfully prepared by hydrothermal synthesis method.Ag/AgCl nanoparticles were deposited on MoO3 crystallites by precipitationdeposition and photoreduction methods to obtain novel Ag/AgCl/MoO3 heterojunction photocatalysts.Some techniques including UV-Vis-DRS were employed to characterize the structure,morphology and properties of as-synthesized samples.The photocatalytic desulfurization of benzothiophene(BT)under visible light indicates that Ag/AgCl/MoO3 heterojunction has the highest photocatalytic activity and its removal efficiency for BT can be up to 92%in Mo(VI)aqueous solution(0.07 mol/L)containing 1.5 g/L catalyst at O∶S=4 under irradiation of visible light for 2.5 h.

关 键 词：水热合成法 Ag/AgCl/MoO3异质结 光催化脱硫 Ag/AgCl等离子体 

分 类 号：TB333[一般工业技术—材料科学与工程]