Construction of a Bi2WO6/TiO2 heterojunction and its photocatalytic degradation performance

doi:10.1039/d1nj06149f

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Construction of a Bi2WO6/TiO2 heterojunction and its photocatalytic degradation performance
	Li, Hongxia 3; Liang, Lei 1,3; Niu, Xiaohui 3; Zhang, Deyi 3; Fan, Haiyan 2; Wang, Kunjie 1,3
刊名	New Journal of Chemistry
	2022-03-30
卷号	46 期号:17 页码:8185-8194
关键词	Chemical analysis Crystal structure Energy dispersive spectroscopy Heterojunctions Molar ratio Organic pollutants Photocatalytic activity Photodegradation Redox reactions Rhodium compounds Scanning electron microscopy Titanium dioxide X ray photoelectron spectroscopy Composite photocatalysts Crystal structure and morphology Hydrothermal methods Molar ratio Performance Photocatalytic degradation Rhodamine-B Solvothermal method X ray scanning X- ray diffractions
ISSN号	1144-0546
DOI	10.1039/d1nj06149f
英文摘要	TiO2 was prepared via a solvothermal method, and a Bi2WO6/TiO2 heterojunction was constructed via a hydrothermal method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to analyze the crystal structure and morphology of composite photocatalysts with different molar ratios. X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray spectroscopy (EDS) were used to analyze the elemental composition and chemical state of the photocatalysts. We explored the degradation performance of the photocatalysts toward rhodamine B (RhB) and tetracycline (TC). When the molar ratio of TiO2 to Bi2WO6 is 6, the composite photocatalyst has the best degradation performance. Under visible light irradiation for 20 min and 25 min, the degradation rates of RhB and TC were 96% and 78%, respectively. The PL and photocurrent results show that the combination of TiO2 and Bi2WO6 can significantly improve the photogenerated carrier separation efficiency of the composite photocatalyst. The main active species in the photocatalytic degradation process is h+, as h+ can not only directly degrade pollutants, but also undergo redox reactions with OH− to generate OH, which participates in the degradation of organic pollutants. © 2022 The Royal Society of Chemistry
语种	英语
出版者	Royal Society of Chemistry
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158502]
专题	石油化工学院
作者单位	1.Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou; 730050, China; 2.Chemistry Department, Nazarbayev University, Astana; 010000, Kazakhstan 3.School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Li, Hongxia,Liang, Lei,Niu, Xiaohui,et al. Construction of a Bi2WO6/TiO2 heterojunction and its photocatalytic degradation performance[J]. New Journal of Chemistry,2022,46(17):8185-8194.
APA	Li, Hongxia,Liang, Lei,Niu, Xiaohui,Zhang, Deyi,Fan, Haiyan,&Wang, Kunjie.(2022).Construction of a Bi2WO6/TiO2 heterojunction and its photocatalytic degradation performance.New Journal of Chemistry,46(17),8185-8194.
MLA	Li, Hongxia,et al."Construction of a Bi2WO6/TiO2 heterojunction and its photocatalytic degradation performance".New Journal of Chemistry 46.17(2022):8185-8194.