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学科主题物理化学
Synergic effect of cation doping and phase composition on the photocatalytic performance of TiO2 under visible light
Yu, Fuhai1,2; Wang, Yanjie1,2; Tang, Hailian1,2; Zhang, Yanjie1; Jin, Changzi1; Liu, Xin1; Li, Mingrun1; Wang, Junhu1; Wang JH(王军虎)
关键词Cation Doping Phase Composition Titanium Dioxide Synergic Effect Visible Light Photocatalyst
刊名CATALYSIS COMMUNICATIONS
2014-06-05
DOI10.1016/j.catcom.2014.03.024
51期:1页:46-52
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]TITANIUM-DIOXIDE ; MOSSBAUER-SPECTRA ; SURFACE PHASES ; ANATASE TIO2 ; THIN-FILMS ; NANOPARTICLES ; RUTILE ; XAFS ; SPECTROSCOPY ; DEGRADATION
英文摘要The synergic effect of cation doping and phase composition for the further improvement of the photocatalytic activity of TiO2 under visible light is reported for the first time. Fe3+ and Sn4+ co-doped TiO2 with optimized phase composition were synthesized through a simple soft-chemical solution method. The visible-light-driven photocatalytic activity of Fe3+ and Sn4+ co-doped TiO2 was 5 times of that of Evonik P25 TiO2 using degradation of methylene blue as model reaction. The synthesized photocatalysts were characterized by powder X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, Sn-119 Mossbauer spectroscopy, and X-ray absorption fine structure spectroscopy. It is indicated that Sn4+ doping can facilitate the phase transition from anatase to rutile. The different ratios of anatase and rutile can be achieved by tuning the amount of Se4+ doped into the lattice. Furthermore, the doping of Se4+ into TiO2 lattice can stabilize the phase composition when Fe3+ is co-doped. In the Fe3+ and Se4+ co-doped TiO2, Sn4+ is mainly used to tune and stabilize the phase composition of TiO2 and Fe3+ acts as a doping cation to narrow the band gap of TiO2. Both band gap and phase composition of TiO2 can be tuned effectively by the simultaneous introduction of Fe3+ and Sn4+. The synergic effect of optimized phase composition (anatase/rutile = 25/75) and narrowed band gap should be the two main reasons for the promoted photocatalytic activity of TiO2 under visible light. (C) 2014 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000336469200011
引用统计
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/144321
专题中国科学院大连化学物理研究所
通讯作者Wang JH(王军虎)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Yu, Fuhai,Wang, Yanjie,Tang, Hailian,et al. Synergic effect of cation doping and phase composition on the photocatalytic performance of TiO2 under visible light[J]. CATALYSIS COMMUNICATIONS,2014,51(1):46-52.
APA Yu, Fuhai.,Wang, Yanjie.,Tang, Hailian.,Zhang, Yanjie.,Jin, Changzi.,...&王军虎.(2014).Synergic effect of cation doping and phase composition on the photocatalytic performance of TiO2 under visible light.CATALYSIS COMMUNICATIONS,51(1),46-52.
MLA Yu, Fuhai,et al."Synergic effect of cation doping and phase composition on the photocatalytic performance of TiO2 under visible light".CATALYSIS COMMUNICATIONS 51.1(2014):46-52.
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