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Effect of nitridation on visible light photocatalytic behavior of microporous (Ag, Ag2O) co-loaded TiO2
Zou, Mingming1; Liu, Honghong1; Feng, Lu1; Xiong, Fengqiang1; Thomas, Tiju2; Yang, Minghui1
KeywordVisible Light Photocatalysis Tio2 Local Surface Plasmonic Resonance Effects Heterojunction Nitridation
Source PublicationMICROPOROUS AND MESOPOROUS MATERIALS
2017-03-01
ISSN1387-1811
DOI10.1016/j.micromeso.2016.11.018
Volume240Pages:137-144
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordZNS QUANTUM DOTS ; DOPED TIO2 ; TITANIUM-DIOXIDE ; EFFICIENT ; DECOLORIZATION ; NANOPARTICLES ; IRRADIATION ; PARTICLES ; REMOVAL ; PURE
AbstractA simple solvothermal approach with post-calcination is used to obtain (Ag, Ag2O) co-loaded TiO2 microspheres with high specific surface area (43.8 m(2)g(-1)) and desirable visible light photocatalytic degradation (64% after 2 h visible light irradiation). Generally, N-doping of TiO2 via nitridation using NH3 improves the visible light absorption property of material. However, nitridation of (Ag, Ag2O) co-loaded TiO2 results in a deleterious impact on the photocatalytic performance (around 20% after 2 h visible light irradiation). This is because nitridation of Ag-Ag2O-TiO2 results in (a) reduction of Ag2O to Ag and (b) Ag agglomeration and grain growth on TiO2 particles. These results in fact imply that in as-synthesized (Ag, Ag2O) co-loaded TiO2 systems, local surface plasmonic resonance (associated with of 5-12 nm Ag particles) aids in enhanced broad band visible light absorption; furthermore the heterojunction between TiO2 and Ag2O improves efficiency with which photogenerated carriers become available for photo catalysis. In all cases we show through selective radical quenching experiments that singlet oxygen is the primary reason for the dye degradation observed. (C) 2016 Elsevier Inc. All rights reserved.
Language英语
WOS IDWOS:000395604600017
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169443
Collection中国科学院大连化学物理研究所
Corresponding AuthorThomas, Tiju; Yang, Minghui
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
Recommended Citation
GB/T 7714
Zou, Mingming,Liu, Honghong,Feng, Lu,et al. Effect of nitridation on visible light photocatalytic behavior of microporous (Ag, Ag2O) co-loaded TiO2[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2017,240:137-144.
APA Zou, Mingming,Liu, Honghong,Feng, Lu,Xiong, Fengqiang,Thomas, Tiju,&Yang, Minghui.(2017).Effect of nitridation on visible light photocatalytic behavior of microporous (Ag, Ag2O) co-loaded TiO2.MICROPOROUS AND MESOPOROUS MATERIALS,240,137-144.
MLA Zou, Mingming,et al."Effect of nitridation on visible light photocatalytic behavior of microporous (Ag, Ag2O) co-loaded TiO2".MICROPOROUS AND MESOPOROUS MATERIALS 240(2017):137-144.
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