Photocatalytic activity of Ti3+ self-doped dark TiO2 ultrafine nanorods, grey SiO2 nanotwin crystalline, and their composite under visible light

doi:10.1088/2053-1591/aabde0

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	Photocatalytic activity of Ti3+ self-doped dark TiO2 ultrafine nanorods, grey SiO2 nanotwin crystalline, and their composite under visible light
	Zhang, Renhui 2; Yang, Yingchang 2; Leng, Senlin 2; Wang, Qing 1
刊名	MATERIALS RESEARCH EXPRESS
	2018-04
卷号	5 期号:4
关键词	structural defects XPS spectroscopy
ISSN号	2053-1591
DOI	10.1088/2053-1591/aabde0
英文摘要	Efficient electron-holes separation is of crucial importance for the improvement of photocatalytic activity for photocatalytic reaction. In this work, dark TiO2 (D-TiO2) nanorods, grey SiO2 (G-SiO2) and D-TiO2/G-SiO2 composite with surface defects are synthesized. We report that the efficiency of photo-generated electrons and holes separation is well enhanced by introducing G-SiO2 into D-TiO2 lattice. Using first-principles method, we find that surface defects (Oor Si vacancy) can be conducive to improving the optical absorption under visible-light region. Combination of the experimental results, for D-TiO2/G-SiO2 composite, the surface defects of TiO2 nanocrystallines can significantly improve the photocatalytic efficiency.
资助项目	Foundation of the Department of Education of Guizhou province[KY[2016] 009][KY[2016] 106] ; Guizhou Province Natural Science Fund for Distinguished Young Scholars[QKH[2017] 5604] ; innovative entrepreneurial training program of college students[2016106668] ; Provincial Key Disciplines of Chemical Engineering and Technology in Guizhou Province[ZDXK[2017]8]
WOS研究方向	Materials Science
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000431059200003
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32710]
专题	理学院能源与动力工程学院
通讯作者	Zhang, Renhui; Leng, Senlin
作者单位	1.Lanzhou Univ Technol, Coll Sci, Lanzhou 730050, Gansu, Peoples R China 2.Tongren Univ, Sch Mat & Chem Engn, Res Ctr Mat & Chem Engn, Tongren 554300, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Renhui,Yang, Yingchang,Leng, Senlin,et al. Photocatalytic activity of Ti3+ self-doped dark TiO2 ultrafine nanorods, grey SiO2 nanotwin crystalline, and their composite under visible light[J]. MATERIALS RESEARCH EXPRESS,2018,5(4).
APA	Zhang, Renhui,Yang, Yingchang,Leng, Senlin,&Wang, Qing.(2018).Photocatalytic activity of Ti3+ self-doped dark TiO2 ultrafine nanorods, grey SiO2 nanotwin crystalline, and their composite under visible light.MATERIALS RESEARCH EXPRESS,5(4).
MLA	Zhang, Renhui,et al."Photocatalytic activity of Ti3+ self-doped dark TiO2 ultrafine nanorods, grey SiO2 nanotwin crystalline, and their composite under visible light".MATERIALS RESEARCH EXPRESS 5.4(2018).