科学研究

MoS2/Bi2WO6复合催化剂的制备及其光催化性能研究

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  • 1.江苏大学化学化工学院,镇江212013;
    2.盐城工学院化学化工学院,盐城224051;
    3.连云港职业技术学院医药与化学工程学院,连云港222006
葛艳(1993-),女,硕士研究生,从事半导体光催化剂研究工作。

收稿日期: 2019-08-28

  修回日期: 2020-08-30

  网络出版日期: 2021-01-21

基金资助

国家自然科学基金(21802119)

Preparation and property of MoS2/Bi2WO6 composite catalyst

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  • 1. School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013;
    2. School of Chemistry and Chemical Engineering,Yancheng Institute of Technology,Yancheng 224051;
    3. School of Medicine and Chemical Enginnering,Lianyungang Technical College,Lianyungang 222006

Received date: 2019-08-28

  Revised date: 2020-08-30

  Online published: 2021-01-21

摘要

通过溶剂热法制备二硫化钼/钨酸铋(MoS2/Bi2WO6)复合催化剂,考察了Mo与W摩尔比不同的复合催化剂光催化降解气相甲苯的性能,并对催化剂的结构进行了表征。结果表明:Bi2WO6纳米颗粒负载在片状的MoS2上,粒径在5~25nm范围,MoS2/Bi2WO6表现出比纯Bi2WO6更好的光催化降解率。当Mo与W摩尔比为 1∶5时,MoS2/Bi2WO6光催化降解率最佳。复合催化剂降解率提高原因主要是:一方面MoS2/Bi2WO6复合催化剂的带隙较小,有助于提高可见光利用率;另一方面MoS2/Bi2WO6复合催化剂可以有效提高光生载流子迁移和分离。

本文引用格式

葛艳, 张荣成, 高佳, 朱瑜瑜, 许琦 . MoS2/Bi2WO6复合催化剂的制备及其光催化性能研究[J]. 化工新型材料, 2020 , 48(12) : 180 -184 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.12.043

Abstract

MoS2/Bi2WO6 was synthesized by solvothermal method.The samples were characterized,and the effect of n(Mo)∶n(W) mole ratio on the catalyst performance was evaluated by toluene degradation.The results shown that the Bi2WO6 with diameters of 5~25nm and these nanoparticles were loaded on the sheet of MoS2.MoS2/Bi2WO6 composites exhibited higher photocatalytic degradation efficiency than pure Bi2WO6.When the mole ratio of n(Mo)∶n(W) reached 1∶5,the MoS2/Bi2WO6 exhibited the best photocatalytic degradation efficiency.The increase of efficiency was mainly caused by two reasons.On the one hand,it can be seen that the band gap of MoS2/Bi2WO6 was smaller,which improved the utilization of visible light.On the other hand,the MoS2/Bi2WO6 photocatalyst can effectively inhibit photoelectron-hole recombination,and enhanced photocatalytic activity.

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