在线阅读 --自然科学版 2020年5期《rGO-BiVO4-BiOCl三元复合物的制备及光催化性能》
rGO-BiVO4-BiOCl三元复合物的制备及光催化性能--[在线阅读]
赵金林1, 崔红2, 张艳峰1
1. 河北师范大学 化学与材料科学学院, 河北 石家庄 050024;
2. 河北交通职业技术学院 教务处, 河北 石家庄 050035
起止页码: 422--428页
DOI: 10.13763/j.cnki.jhebnu.nse.2020.05.009
摘要
采用溶剂热法合成了rGO-BiVO4-BiOCl异质结,讨论了样品在可见光下对亚甲基蓝(MB)的光催化降解活性.结果表明,rGO-BiVO4-BiOCl复合物的吸收波长可达到580nm,提高了催化剂对可见光的吸收能力.采用300W氙灯(λ> 420nm)模拟可见光,rGO-BiVO4-BiOCl质量比为1∶400∶1000的样品照射120min对MB降解率达到96.3%,分别是BiVO4和BiOCl的2.5倍和2.2倍.三元复合物提高了电子和空穴的分离效率,增强了光催化活性.

Preparation and Photocatalytic Property of rGO-BiVO4-BiOCl Ternary Complex
ZHAO Jinlin1, CUI Hong2, ZHANG Yanfeng1
1. College of Chemistry and Material Science, Hebei Normal University, Hebei Shijiazhuang 050024, China;
2. Dean's Office, Hebei Jiaotong Vocation and Technical College, Hebei Shijiazhuang 050035, China
Abstract:
The rGO-BiVO4-BiOCl heterojunction was synthesized by solvothermal method.The photocatalytic degradation activity for methylene blue under visible light was discussed.The experimental results showed that the absorption wavelength of rGO-BiVO4-BiOCl was 580nm,indicating that the ternary combination can improve the absorption capacity of the catalyst for visible light.Under the irradiation of 300 W xenon lamp(λ>420nm),the degradation rate of methylene blue catalyzed by rGO-BiVO4-BiOCl with the mass ratio of 1∶400∶1000 reached 96.3% after 120 min,which was 2.5 and 2.2 times higher than that of pure BiVO4 and BiOCl,respectively.Ternary complex facilitated the electron transfer of BiVO4 and BiOCl,improving the separation efficiency of electrons and holes,and enhancing the photocatalytic activity.

收稿日期: 2020-01-14
基金项目: 国家自然科学基金(11179029);河北省教育厅重点项目(ZD2018019);河北师范大学技术创新基金(L2017K05)

参考文献:
[1]卢涛,邬丽姗,刘国,等.BiOCl复合光催化材料可见光催化研究进展[J].应用化工,2018,47(11):2541-2546.doi:10.16581/j.cnki.issn.1671-3206.2018.11.030 LU Tao,WU Lishan,LIU Guo,et al.Progress of Photocatalytic Research on BiOCl Composite Photocatalytic Materials[J].Applied Chemical Industry,2018,47(11):2541-2546.
[2]陈计荀.ZnO基异质结构的构建及光催化性能研究[D].南京:南京航空航天大学,2019.doi:10.27239/d.cnki.gnhhu.2019.001627 CHEN Jixun.Construction of ZnO Heterostructures and the Photocatalytic Properties[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2019.
[3]RAZAVI-KHOSROSHAHI H,MOHAMMADZADEH S,HOJAMBERDIEV M,et al.BiVO4/BiOX(X=F,Cl,Br,I)Heterojunctions for Degrading Organic Dye Under Visible Light[J].Adv Powder Technol,2019,30:1290-1296.doi:10.1016/j.apt.2019.04.002
[4]CAO J,ZHOU C,LIN H,et al.Surface Modification of m-BiVO4 with Wide Band-gap Semiconductor BiOCl to Largely Improve the Visible Light Induced Photocatalytic Activity[J].Appl Surf Sci,2013,284:263-269.doi:10.1016/j.apsusc.2013.07.092
[5]KARUNAKARAN C,KALAIVANI S,VINAYAGAMOORTHY P.Optical,Electrical and Visible Light-photocatalytic Properties of Hydrothermally Synthesized Amorphous BiVO4 Nanoparticles[J].Mater Lett,2014,122:21-24.doi:10.1016/j.matlet.2014.01.179
[6]FENG C,WANG D,JIN B,et al.The Enhanced Photocatalytic Properties of BiOCl/BiVO4 p-n Heterojunctions via Plasmon Resonance of Metal Bi[J].RSC Adv,2015,93:75947-75952.doi:10.1039/c5ra13886h.
[7]HE Z,SHI Y,GAO C,et al.BiOCl/BiVO4 p-n Heterojunction with Enhanced Photocatalytic Activity Under Visible-light Irradiation[J].J Phys Chem C,2013,118:389-398.doi:10.1021/jp409598s
[8]YANG C,LI F,LI T,et al.One-step Ionic Liquid-assisted Ultrasonic Method for the Preparation of BiOCl/m-BiVO4 Heterojunctions with Enhanced Visible Light Photocatalytic Activity[J].Cryst Eng Comm,2015,40:7676-7683.doi:10.1039/c9ce01960j
[9]姚静文,张艳峰.石墨烯卤氧铋基复合材料的制备及可见光催化性能[D].石家庄:河北师范大学,2019. YAO Jingwen,ZHANG Yanfeng.Preparation and Photocatalytic Activity of Graphene-BiOX Based Composites[D].Shijiazhuang:Hebei Normal University,2019.
[10]王盈君,于永生.CoS2/GO复合材料的制备及其处理水中重金属Hg(Ⅱ)和Cr(Ⅵ)的性能研究[D].哈尔滨:哈尔滨工业大学,2019.doi:10.27061/d.cnki.ghgdu.2019.002565 WANG Yingjun,YU Yongsheng.Preparation of Composite Materials of CoS2/GO and Its Properties for Treatment of Heavy Metals Hg(Ⅱ)and Cr(Ⅵ) in Water[D].Harbin:Harbin Institute of Technology,2019.
[11]SONG L,PANG Y,ZHENG Y,et al.Design,Preparation and Enhanced Photocatalytic Activity of Porous BiOCl/BiVO4 Microspheres via a Coprecipitation-hydrothermal Method[J].J Alloy Compd,2017,710:375-382.doi:10.1016/j.jallcom.2017.03.283
[12]SU X,YANG J,YU X,et al.In Situ Grown Hierarchical 50%BiOCl/BiOI Hollow Flowerlike Microspheres on Reduced Graphene Oxide Nanosheets for Enhanced Visible-light Photocatalytic Degradation of Rhodamine B[J].Appl Surf Sci,2018,433:502-512.doi:10.1016/j.apsusc.2017.09.258
[13]SHAN L,LIU Y,SURIYAPRAKASH J,et al.Highly Efficient Photocatalytic Activities,Band Alignment of BiVO4/BiOCl {001} Prepared by in Situ Chemical Transformation[J].J Mol Catal A:Chem,2016,411:179-187.doi:10.1016/j.molcata.2015.10.032
[14]CAI L,ZHANG G,ZHANG Y,et al.Mediation of Band Structure for BiOBr<i>xI1-x Hierarchical Microspheres of Multiple Defects with Enhanced Visible-light Photocatalytic Activity[J].Cryst Eng Comm,2018,20:3647-3656.doi:10.1039/c8ce00700d