Electronic structure of TiO2 nanotube arrays from X-ray absorption near edge structure studies
文献类型：期刊论文
| 作者 | Zhou, J. G.4; Fang, H. T.1; Maley, J. M.5; Murphy, M. W.3; Ko, J. Y. Peter3; Cutler, J. N.4; Sammynaiken, R.5; Sham, T. K.3; Liu, M.2; Li, F.2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2009 |
| 卷号 | 19期号:37页码:6804-6809 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/b909225k |
| 通讯作者 | Sham, T. K.(tsham@uwo.ca) |
| 英文摘要 | We report an X-ray absorption near edge structure (XANES) investigation of several TiO2 nanotube arrays, including the as-prepared nanotube arrays from electrochemical anodic oxidation of Ti foil (as-prepared ATNTA), as-prepared nanotube arrays after annealing at 580 degrees C (annealed ATNTA) and annealed ATNTA after electrochemical intercalation with Li (Li-intercalated ATNTA). XANES at the O K-edge and Ti L-3,L-2 and K edges shows distinctly different spectral features for the as-prepared and the annealed ATNTA, characteristic of amorphous and anatase structures, respectively. Intercalation of Li into annealed ATNTA induces a surprising, yet spectroscopically unmistakable, anatase to rutile transition. XANES at the Li K-edge clearly shows ionic features of Li in ATNTA. The charge relocation from Ti 3d to O 2p at the conduction band in TiO2 was also observed when Li ions were intercalated into annealed ATNTA albeit no noticeable reduction of Ti4+ to Ti3+ was observed. The O K-edge shows a distinctly enhanced feature in the multiple scattering regime, indicating a close to linear O-Li-O arrangement in Li-intercalated ATNTA. These results show bonding changes between Ti and O resulting from the interaction of Li ions in the TiO2 lattices. Such bonding variation has also been supported by X-ray excited optical luminescence (XEOL), which suggests Li+-defect interactions. The implications of these results are discussed. |
| 资助项目 | NSERC ; CFI ; OIT ; CRC (TKS) ; National Science Foundation of China[5060211] ; National Science Foundation of China[50872026] ; Centre for Chemical Physics at UWO |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000269835600020 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | NSERC ; CFI ; OIT ; CRC (TKS) ; National Science Foundation of China ; Centre for Chemical Physics at UWO |
| 源URL | [http://ir.imr.ac.cn/handle/321006/97220]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Sham, T. K. |
| 作者单位 | 1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 3.Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada 4.Univ Saskatchewan, Canadian Light Source Inc, Saskatoon, SK S7N 0X4, Canada 5.Univ Saskatchewan, Saskatchewan Struct Sci Ctr, Saskatoon, SK S7N 0X4, Canada |
| 推荐引用方式 GB/T 7714 | Zhou, J. G.,Fang, H. T.,Maley, J. M.,et al. Electronic structure of TiO2 nanotube arrays from X-ray absorption near edge structure studies[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(37):6804-6809. |
| APA | Zhou, J. G..,Fang, H. T..,Maley, J. M..,Murphy, M. W..,Ko, J. Y. Peter.,...&Li, F..(2009).Electronic structure of TiO2 nanotube arrays from X-ray absorption near edge structure studies.JOURNAL OF MATERIALS CHEMISTRY,19(37),6804-6809. |
| MLA | Zhou, J. G.,et al."Electronic structure of TiO2 nanotube arrays from X-ray absorption near edge structure studies".JOURNAL OF MATERIALS CHEMISTRY 19.37(2009):6804-6809. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。