Photocatalytic purification of simulated dye wastewater in different pH environments by using BaTiO3/Bi2WO6 heterojunction photocatalysts

doi:10.1016/j.optmat.2021.110853

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	Photocatalytic purification of simulated dye wastewater in different pH environments by using BaTiO3/Bi2WO6 heterojunction photocatalysts
	Wang, Yanping 2; Sun, Xiaofeng 1; Xian, Tao 1; Liu, Guorong 2; Yang, Hua 2
刊名	OPTICAL MATERIALS
	2021
卷号	113
关键词	BaTiO3 particles Bi2WO6 hierarchical architectures BaTiO3/Bi2WO6 heterojunctions Photodegradation Simulated dye wastewater
ISSN号	0925-3467
DOI	10.1016/j.optmat.2021.110853
英文摘要	To reveal the photodegradation process of mixture dye solutions in different pH environments by photocatalysts is a key point to promote the practical application of potocatalysis technology in purifying industrial dye wastewater. Herein we report the photocatalytic degradation of various organic dyes (MO, RhB, MB) and MO/RhB/MB mixture solutions in different pH environments by using novel BaTiO3/Bi2WO6 (BTO/BWO) heterojunction composites as the photocatalyst and simulated sunlight as the light source. The BTO/BWO heterojunction photocatalysts were prepared by immobilizing BTO particles onto rose flower-like BWO hierarchical architectures. Among the as-derived samples, the 15 wt%BTO/BWO composite is determined to have the highest photodegradation performance, which is ascribed to the efficient separation of photoexcited electron/hole pairs due to the Z-scheme electron transfer mechanism. The photodegradation of the dyes is found to be highly dependent on the acidic-alkaline environments. Moreover, an interesting competitive photodegradation phenomenon between the dyes is observed in the MO/RhB/MB mixture solutions. Superoxide (center dot O-2(-)) and hydroxyl (center dot OH) radicals are suggested to be the direct reactive species causing the dye photodegradation in the present photocatalytic system.
WOS研究方向	Materials Science ; Optics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000633031700001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148343]
专题	理学院
作者单位	1.Qinghai Normal Univ, Coll Phys & Elect Informat Engn, Xining 810008, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Wang, Yanping,Sun, Xiaofeng,Xian, Tao,et al. Photocatalytic purification of simulated dye wastewater in different pH environments by using BaTiO3/Bi2WO6 heterojunction photocatalysts[J]. OPTICAL MATERIALS,2021,113.
APA	Wang, Yanping,Sun, Xiaofeng,Xian, Tao,Liu, Guorong,&Yang, Hua.(2021).Photocatalytic purification of simulated dye wastewater in different pH environments by using BaTiO3/Bi2WO6 heterojunction photocatalysts.OPTICAL MATERIALS,113.
MLA	Wang, Yanping,et al."Photocatalytic purification of simulated dye wastewater in different pH environments by using BaTiO3/Bi2WO6 heterojunction photocatalysts".OPTICAL MATERIALS 113(2021).