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题名:
Facile fabrication of mesoporous Fe-Ti-SBA15 silica with enhanced visible-light-driven simultaneous photocatalytic degradation and reduction reactions
作者: Chang, Fei1; Jiao, Mingzhi1; Xu, Quan1; Deng, Baoqing1; Hu, Xuefeng2
刊名: APPLIED SURFACE SCIENCE
ISSN号: 0169-4332
出版日期: 2018-03-30
卷号: 435, 页码:708-717
关键词: Fe-TiO2-SBA-15 ; Photocatalysis ; Simultaneous ; Degradation ; Reduction
DOI: 10.1016/j.apsusc.2017.11.168
产权排序: 第2完成单位
通讯作者: Chang, Fei(Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China) ; Hu, Xuefeng(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Shandong, Peoples R China)
英文摘要: A series of mesoporous iron-titanium-containing silica Fe-TiO2-SBA15 (FTS) were constructed via a facile one-pot hydrothermal route and subsequently characterized by X-ray diffraction patterns, UV-vis diffuse reflection spectroscopy, transmission electron microscopy, scanning electron microscopy, nitrogen adsorption-desorption, X-ray photoelectron spectroscopy, and X-ray energy dispersion spectroscopy. By analyses, these samples possessed ordered two-dimensional hexagonal mesoporous structures, mainly involving mixed dual-phases of anatase and rutile TiO2, like commercial titania P25. The UV-vis diffuse reflection spectra demonstrated the presence of Fe species that was further confirmed by the X-ray photoelectron spectra and X-ray energy dispersion spectrum. The existence of Fe species in form of Fe3+ cations played an important role on the phase composition and electronic structure of these samples. With structural and morphological merits, these samples exhibited relatively high photocatalytic efficiency toward the degradation of dye methylene blue (MB) and reduction of Cr(VI) under visible-light irradiation, comparing with P25. In addition, among all candidates, the sample with a Fe/Si molar ratio of 0.03 showed the highest catalytic performance under optimal conditions, especially in the coexistence of both MB and Cr(VI), revealing an obviously synergistic effect when the consumption of both contaminants occurred. Finally, a primary catalytic mechanism was speculated on basis of active species capture experiments. (C) 2017 Elsevier B.V. All rights reserved.
研究领域[WOS]: Chemistry ; Materials Science ; Physics
项目资助者: National Natural Science Foundation of China(21207089) ; Natural Science Foundation of Shanghai(17ZR1419200) ; science and technology development project of University of Shanghai for Science and Technology(2017KJFZ073) ; SRF for ROCS, SEM.
关键词[WOS]: DOPED TITANIA SEMICONDUCTORS ; SOL-GEL METHOD ; TIO2 NANOPARTICLES ; CR(VI) REDUCTION ; SBA-15 ; FE ; PERFORMANCE ; IRRADIATION ; CATALYSTS ; OXIDATION
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000424247500088
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内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/23575
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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作者单位: 1.Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Shandong, Peoples R China

Recommended Citation:
Chang, Fei,Jiao, Mingzhi,Xu, Quan,et al. Facile fabrication of mesoporous Fe-Ti-SBA15 silica with enhanced visible-light-driven simultaneous photocatalytic degradation and reduction reactions[J]. APPLIED SURFACE SCIENCE,2018,435:708-717.
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