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题名: Visible light photocatalysts (Fe, N):TiO2 from ammonothermally processed, solvothermal self-assembly derived Fe-TiO2 mesoporous microspheres
作者: 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
发表日期: 2017-07-01
DOI: 10.1016/j.matchemphys.2017.04.035
卷: 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
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.
关键词[WOS]: TITANIUM-DIOXIDE ;  BAND-GAP ;  TIO2 NANOPARTICLES ;  MODIFIED N-TIO2 ;  NITROGEN ;  OXIDATION ;  GEL
语种: 英语
WOS记录号: WOS:000402218400032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152235
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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