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题名: Fabrication of Ag-Ag2O/reduced TiO2 nanophotocatalyst and its enhanced visible light driven photocatalytic performance for degradation of diclofenac solution
作者: Cui, YQ; Ma, QL; Deng, XY; Meng, Q; Cheng, XW; Xie, MZ; Li, XL; Cheng, QF; Liu, HL
收录类别: SCIE
出版日期: 2017-06-05
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
卷号: 206, 页码:136-145
出版者: ELSEVIER
出版地: AMSTERDAM
英文摘要: In this study, Ag-Ag2O/reduced TiO2 (denoted as Ag-Ag2O/r-TiO2) nano-photocatalyst had been fabricated through one-step solution reduction strategy in the presence of potassium borohydride. Afterwards, physicochemical properties of the resulting samples were investigated by scanning electron microscope (SEM), N-2 adsorption/desorption isotherms, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), electron spin resonance (ESR) and time resolved surface photovoltage (TR-SPV) techniques. Results indicated that potassium borohydride treatment could simutaneously induce the generation of Ti3+ self-doping energy level between the forbidden band of TiO2 and metallic Ag species existed in the forms of Ag and Ag2O nanocrystalline, thereby resulting in the greatly enhanced visible light absorbance and photoinduced charge separation efficiency. In addition, the visible light driven (VLD) photocatalytic (PC) performance was evaluated through the degradation of diclofenac and generation of.OH radicals. As -expected, Ag-Ag2O/r-TiO2 sample exhibited higher VLD PC performance and larger generation amount of.OH radicals. Furthermore, the enhanced VLD PC mechanism was proposed and confirmed, which was mainly attributed to the synergistic effect originated from the localized SPR of Ag-0 nanocrystalline and Ti3+ self-doping which responsible for the intense visible light absorbance, high photoinduced charge separation efficiency and VLD PC performance. (C) 2017 Elsevier B.V. All rights reserved.
关键词: Ag-Ag2O/reduced TiO2 ; Diclofenac ; Visible light ; Photocatalysis ; Potassium borohydride
作者部门: [Cui, Yuqi ; Ma, Qiuling ; Deng, Xiaoyong ; Meng, Qi ; Cheng, Xiuwen ; Xie, Mingzheng ; Li, Xiaoli] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Environm Pollut & Control, Key Lab Western Chinas Environm Syst (Ministry Ed, Lanzhou 730000, PR, Peoples R China ; [Meng, Qi ; Cheng, Qingfeng] Chengdu Univ Informat Technol, Coll Resources & Environm, Chengdu 610225, PR, Peoples R China ; [Cheng, Xiuwen ; Xie, Mingzheng ; Cheng, Qingfeng ; Liu, Huiling] Harbin Inst Technol, Sch Municipal Environm Engn, State Key Lab Urban Water Resources & Environm SK, Huanghe Rd 73, Harbin 150090, PR, Peoples R China ; [Cheng, Xiuwen] Shanghai Inst Ceram, Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Dingxi Rd, Shanghai 2000050, PR, Peoples R China ; [Cheng, Xiuwen] 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, Peoples R China ; [Cheng, Xiuwen] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, PR, Peoples R China
通讯作者: Meng, Q (reprint author), Chengdu Univ Informat Technol, Coll Resources & Environm, Chengdu 610225, PR, Peoples R China. ; Cheng, XW (reprint author), Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, PR, Peoples R China.
学科分类: Chemistry; Engineering
文章类型: Article
所属项目编号: National Natural Science Foundation of China [51508254] ; Nature Science Foundation of Gansu Province of China [1506RJZA216] ; Fundamental Research Funds for the Central Universities [lzujbky-2015-137] ; Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure [SKL201509SIC]
所属项目名称: 国家自然科学基金项目 ; 中央高校基本科研业务费专项资金 ; 甘肃省自然科学基金计划
项目资助者: NSFC ; LZU ; GSSTD
语种: 英语
DOI: 10.1016/j.apcatb.2017.01.014
ISSN号: 0926-3373
WOS记录号: WOS:000395602000014
IR记录号: WOS:000395602000014
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189529
Appears in Collections:资源环境学院_期刊论文

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Recommended Citation:
Cui, YQ,Ma, QL,Deng, XY,et al. Fabrication of Ag-Ag2O/reduced TiO2 nanophotocatalyst and its enhanced visible light driven photocatalytic performance for degradation of diclofenac solution[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,206:136-145.
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