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Visible light photocatalysts (Fe, N):TiO2 from ammonothermally processed, solvothermal self-assembly derived Fe-TiO2 mesoporous microspheres
Zou, Mingming1; Xiong, Fengqiang1; Ganeshraja, Ayyakannu Sundaram1; Feng, Xiaohua3; Wang, Chuanxi3; Thomas, Tiju2; Yang, Minghui1
关键词Visible Photocatalysis Mesoporous Titania Interstitial And Substitutional n Co-dopant
刊名MATERIALS CHEMISTRY AND PHYSICS
2017-07-01
DOI10.1016/j.matchemphys.2017.04.035
195页:259-267
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Materials Science, Multidisciplinary
研究领域[WOS]Materials Science
关键词[WOS]TITANIUM-DIOXIDE ; BAND-GAP ; TIO2 NANOPARTICLES ; MODIFIED N-TIO2 ; NITROGEN ; OXIDATION ; GEL
英文摘要Iron (III) and nitrogen co-doped mesoporous TiO2 microspheres (Fe-N-TiO2) are prepared using a self assembly based solvothermal process followed by an ammonothermal method. Among all samples, 1 mol.% of Fe dopants and 500 degrees C nitridation (for 2 h) gives the highest visible light photoactivity. Results imply that the Fe3+/Fe2+ dopant trap energy level introduced within the band gap in mildly Fe (similar to 1 at%) doped TiO2 and the mesoporous nature of the material, both aid in the observed catalytic performance. Subjecting Fe-TiO2 samples to ammonothermal process induces oxygen vancancies, and substitutional and interstitial N. This reduces optical band gap, and introduces local states. The lower band gap and local states together aid in the absorption of visible light and separation of charge carriers. Co-dopants are distributed uniformly in the best photocatalysts. The active species generated in the photocatalytic system is shown to be singlet molecular oxygen (O-1(2)) using selective radical quenchers. (C) 2017 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000402218400032
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152235
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, DICP, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China
2.Indian Inst Technol Madras, Dept Met & Mat Engn, Chennai 600036, Tamil Nadu, India
3.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
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Zou, Mingming,Xiong, Fengqiang,Ganeshraja, Ayyakannu Sundaram,et al. Visible light photocatalysts (Fe, N):TiO2 from ammonothermally processed, solvothermal self-assembly derived Fe-TiO2 mesoporous microspheres[J]. MATERIALS CHEMISTRY AND PHYSICS,2017,195:259-267.
APA Zou, Mingming.,Xiong, Fengqiang.,Ganeshraja, Ayyakannu Sundaram.,Feng, Xiaohua.,Wang, Chuanxi.,...&Yang, Minghui.(2017).Visible light photocatalysts (Fe, N):TiO2 from ammonothermally processed, solvothermal self-assembly derived Fe-TiO2 mesoporous microspheres.MATERIALS CHEMISTRY AND PHYSICS,195,259-267.
MLA Zou, Mingming,et al."Visible light photocatalysts (Fe, N):TiO2 from ammonothermally processed, solvothermal self-assembly derived Fe-TiO2 mesoporous microspheres".MATERIALS CHEMISTRY AND PHYSICS 195(2017):259-267.
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