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Modulating the photo-active anatase TiO(2 )by cationic co-dopants: A case of iron and lanthanum
Khan, Matiullah; Zeng, Yi; Lan, Zhenhua; Ullah, Asad
2019-06-01
Source PublicationMATERIALS RESEARCH EXPRESS
ISSN2053-1591
Volume6Issue:6
SubtypeArticle
AbstractThe electronic band structure of TiO2 could be modulated by dopants to harvest the major part of the solar spectrum. A cationic pair of dopant comprising of iron and lanthanum is studied in the lattice of anatase TiO2 and modifications in the geometrical structure, band structure and optical response are observed. Ferrum and lanthanum doping reduced the band gap of TiO2 along with inducing visible light absorption. Isolated states due to Fe are created above top of the valence band in Fe@TiO2. In case of La@TiO2, the La states successfully mixed with the valence and conduction band reducing the band gap. Substitutional La at Ti site in Fe@TiO2 changed the nature of Fe 3d in the band structure and strongly contributed to the narrowing of band gap. The Fe and La co-doped TiO2 possess reduced band gap with superior optical response in the visible regime. The Fe and La as cationic pair of dopant synergistically stabilize the system with the improved optical response explaining the experimental observation of enhanced photoactivity.
KeywordTiO2 photocatalysis band structure photo-response
DOI10.1088/2053-1591/ab0a45
Language英语
WOS Research AreaMaterials Science
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27101
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Khan, Matiullah,Zeng, Yi,Lan, Zhenhua,et al. Modulating the photo-active anatase TiO(2 )by cationic co-dopants: A case of iron and lanthanum[J]. MATERIALS RESEARCH EXPRESS,2019,6(6).
APA Khan, Matiullah,Zeng, Yi,Lan, Zhenhua,&Ullah, Asad.(2019).Modulating the photo-active anatase TiO(2 )by cationic co-dopants: A case of iron and lanthanum.MATERIALS RESEARCH EXPRESS,6(6).
MLA Khan, Matiullah,et al."Modulating the photo-active anatase TiO(2 )by cationic co-dopants: A case of iron and lanthanum".MATERIALS RESEARCH EXPRESS 6.6(2019).
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