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Effect of Metal Doping on Electronic Structure and Visible Light Absorption of SrTiO3 and NaTaO3 (Metal = Mn, Fe, and Co)
Zhou, Xin; Shi, Jingying; Li, Can
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2011-04-28
DOI10.1021/jp200022x
Volume115Issue:16Pages:8305-8311
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordDENSITY-FUNCTIONAL CHARACTERIZATION ; PHOTOCATALYTIC ACTIVITY ; DOPED TIO2 ; BAND-GAPS ; WATER ; ENERGY ; O-2 ; H-2 ; 1ST-PRINCIPLES ; DECOMPOSITION
AbstractFirst-principles density functional theory calculations have been performed on the electronic structure of M-doped SrTiO3 (M = Mn, Fe, and Co) to evaluate the effect of metal dopants on the geometric structure and electronic structure of SrTiO3. On the basis of the optimized structures of M-doped SrTiO3, our calculations show that substitutional M at the Ti site requires smaller formation energy than substituting M for the Sr site. Some Mn and Co 3d states appear below the bottom of the conduction band, and some Fe 3d states are located above the top of the valence band, which result in the decreased band gap with respect to the perfect SrTiO3, and thus, the visible light absorption is observed. Further research indicates that different dopant concentrations in M-doped SrTiO3 simulated by changing the size of the supercell do not bring significant effects in the electronic characteristics. On the basis of the calculated results on M-doped SrTiO3, we theoretically predicted that Mn-NaTaO3 is suitable for photo-oxidation of water and theoretically and experimentally found that the absorption edge of Fe-doped NaTaO3 was red-shifted to the visible region, which potentially could be active for overall water splitting under visible light irradiation.
Language英语
WOS IDWOS:000289697400059
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142660
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Xin,Shi, Jingying,Li, Can. Effect of Metal Doping on Electronic Structure and Visible Light Absorption of SrTiO3 and NaTaO3 (Metal = Mn, Fe, and Co)[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(16):8305-8311.
APA Zhou, Xin,Shi, Jingying,&Li, Can.(2011).Effect of Metal Doping on Electronic Structure and Visible Light Absorption of SrTiO3 and NaTaO3 (Metal = Mn, Fe, and Co).JOURNAL OF PHYSICAL CHEMISTRY C,115(16),8305-8311.
MLA Zhou, Xin,et al."Effect of Metal Doping on Electronic Structure and Visible Light Absorption of SrTiO3 and NaTaO3 (Metal = Mn, Fe, and Co)".JOURNAL OF PHYSICAL CHEMISTRY C 115.16(2011):8305-8311.
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