Modulating the photo-active anatase TiO(2 )by cationic co-dopants: A case of iron and lanthanum

doi:10.1088/2053-1591/ab0a45

	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
刊名	MATERIALS RESEARCH EXPRESS
	2019-06-01
卷号	6 期号:6
关键词	TiO2 photocatalysis band structure photo-response
ISSN号	2053-1591
DOI	10.1088/2053-1591/ab0a45
文献子类	Article
英文摘要	The 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.
WOS研究方向	Materials Science
语种	英语
出版者	IOP PUBLISHING LTD
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27101]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 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).