Photocatalytic activity of Ti3+ self-doped dark TiO2 ultrafine nanorods, grey SiO2 nanotwin crystalline, and their composite under visible light | |
Zhang, Renhui2; Yang, Yingchang2; Leng, Senlin2; Wang, Qing1 | |
刊名 | MATERIALS RESEARCH EXPRESS
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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). |
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