Microwave-assisted synthesis of Ag2O/reduced TiO2 nano-tube arrays photoelectrode with enhanced visible photocatalytic activity for degradation of organic pollutants

ISL OpenIR > 青海盐湖研究所知识仓储

	Microwave-assisted synthesis of Ag2O/reduced TiO2 nano-tube arrays photoelectrode with enhanced visible photocatalytic activity for degradation of organic pollutants
	Deng, Xiaoyong 1,2; Ma, Qiuling 1,2; Cui, Yuqi 1,2; Zhang, Huixuan 1,2; Cheng, Xiuwen 1,2,3,5,6; Li, Xiaoli 1,2; Xie, Mingzheng 1,2; Cheng, Qingfeng 4; Li, Bo 3
	2017-07-12
发表期刊	SEPARATION AND PURIFICATION TECHNOLOGY
卷号	182 页码:230-237
关键词	Ag2o/reduced Tio2 Nano-tube Arrays Photoelectrode Visible Light Photocatalysis Methyl Blue
摘要	In order to improve the charge separation and photocatalytic (PC) efficiency of TiO2 nano-tube arrays (TiO2 NTAs) photoelectrode, narrower band gap Ag2O nano-crystallites decorated reduced TiO2 NTAs (Ag2O/r-TiO2 NTAs) photoelectrode was fabricated through one-step microwave reduction strategy, which could simultaneously induce the generation of Ag2O nano-crystallites onto the surface of TiO2 NTAs and Ti3+ self-doping energy level below the conduction band of TiO2. Subsequently, the resulting photoelectrodes were systematically studied by scanning electron spectroscopy, X-ray diffraction, Xray photoelectron spectroscopy, UV visible light diffuse reflectance spectroscopy and photoelectrochemical measurements. In addition, the photocatalytic (PC) performance was evaluated by photodecomposition of methyl blue and generation of "OH radicals. As a result, Ag2O/r-TiO2 NTAs photoelectrode performed a significantly enhanced light absorbance in the whole visible region, transient photocurrent density of 0.189 mA cm(-2), photoinduced charge separation efficiency and 98.9% of PC efficiency for decomposition of methyl blue. Furthermore, the enhanced visible light PC mechanism for decomposition of organic pollutant was proposed, which was mainly attributed to the strong visible light absorbance and high photoinduced charge separation efficiency. Moreover, the as-fabricated Ag2O/r-TiO2 NTAs photoelectrode performed well stability after consecutive utilization for five cycles. This study provides a versatile strategy to fabricate high-efficient catalyst which could be utilized in waste water elimination. (C) 2017 Elsevier B.V. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/4247
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Environm Pollut Predict & Control Gansu P, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Qinghai Inst Salt Lake, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xinning Rd 18, Xining 810008, Peoples R China 4.Chengdu Univ Informat Technol, Coll Resources & Environm, Chengdu 610225, Peoples R China 5.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Dingxi Rd, Shanghai 2000050, Peoples R China 6.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Collaborat Innovat Ctr Atmospher Environm & Equip, Jiangsu Engn Technol Res Ctr Environm Cleaning Ma, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Deng, Xiaoyong,Ma, Qiuling,Cui, Yuqi,et al. Microwave-assisted synthesis of Ag2O/reduced TiO2 nano-tube arrays photoelectrode with enhanced visible photocatalytic activity for degradation of organic pollutants[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,182:230-237.
APA	Deng, Xiaoyong.,Ma, Qiuling.,Cui, Yuqi.,Zhang, Huixuan.,Cheng, Xiuwen.,...&Li, Bo.(2017).Microwave-assisted synthesis of Ag2O/reduced TiO2 nano-tube arrays photoelectrode with enhanced visible photocatalytic activity for degradation of organic pollutants.SEPARATION AND PURIFICATION TECHNOLOGY,182,230-237.
MLA	Deng, Xiaoyong,et al."Microwave-assisted synthesis of Ag2O/reduced TiO2 nano-tube arrays photoelectrode with enhanced visible photocatalytic activity for degradation of organic pollutants".SEPARATION AND PURIFICATION TECHNOLOGY 182(2017):230-237.