Synthesis of Bi2WO6/Na-bentonite composites for photocatalytic oxidation of arsenic(iii) under simulated sunlight

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境纳米材料实验室

	Synthesis of Bi2WO6/Na-bentonite composites for photocatalytic oxidation of arsenic(iii) under simulated sunlight
	Yang, Quancheng ; Dai, Yunxiang ; Huang, Zijian ; Zhang, Jing ; Zeng, Ming ; Shi, Changsheng
刊名	RSC ADVANCES
	2019-09-22
卷号	9 期号:51 页码:29689-29698
英文摘要	Novel Bi2WO6/bentonite (denoted as BWO/BENT) composites were prepared via a typical hydrothermal process and employed for the photocatalytic oxidation of arsenic(iii) (As(iii)). The properties of the prepared samples were characterized through X-ray diffraction, transmission and scanning electron microscopy, UV-visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, and photoluminescence spectroscopy. Effects of the BENT ratio on the As(iii) removal were explored under simulated sunlight, and the best photocatalytic effect was observed for the composite with BWO : BENT = 7 : 3 w/w. Compared with the pure BWO, the BWO/BENT composites exhibited an improved photocatalytic ability in the removal of As(iii), which was mainly ascribed to the enlarged specific surface area and the suppressed electron-hole recombination by the incorporated BENT. Furthermore, photo-generated holes (h(+)) and superoxide radicals center dot O-2(-) were confirmed to be the major contributors to the oxidation of As(iii), and an associated mechanism of photocatalytic oxidation of As(iii) over BWO/BENT composites was proposed.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43214]
专题	生态环境研究中心_环境纳米材料实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effect, Beijing 100085, Peoples R China 2.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China 3.Univ Chinese Acad Sci, Natl Engn Lab VOCs Pollut Control Mat & Technol, Beijing 101408, Peoples R China
推荐引用方式 GB/T 7714	Yang, Quancheng,Dai, Yunxiang,Huang, Zijian,et al. Synthesis of Bi2WO6/Na-bentonite composites for photocatalytic oxidation of arsenic(iii) under simulated sunlight[J]. RSC ADVANCES,2019,9(51):29689-29698.
APA	Yang, Quancheng,Dai, Yunxiang,Huang, Zijian,Zhang, Jing,Zeng, Ming,&Shi, Changsheng.(2019).Synthesis of Bi2WO6/Na-bentonite composites for photocatalytic oxidation of arsenic(iii) under simulated sunlight.RSC ADVANCES,9(51),29689-29698.
MLA	Yang, Quancheng,et al."Synthesis of Bi2WO6/Na-bentonite composites for photocatalytic oxidation of arsenic(iii) under simulated sunlight".RSC ADVANCES 9.51(2019):29689-29698.