期刊論文
| 學年 | 108 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2020-06-01 |
| 作品名稱 | Effect of Fe2O3 coating on ZnO nanowires in photoelectrochemical water splitting: a synchrotron x-ray spectroscopic and spectromicroscopic investigation |
| 作品名稱（其他語言） | |
| 著者 | Y. R. Lu; Y. F. Wang; H. W. Chang; Y. C. Huang; J. L. Chen; C. L. Chen; Y. C. Lin; Y. G. Lin; W. F. Pong; T. Ohigashi; N. Kosugi; W. C. Chou; C. L. Dong |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Solar Energy Materials and Solar Cells 209, 110469 |
| 摘要 | An array of ZnO/Fe2O3 core-shell nanowires (NW) for the highly efficient absorption of light and carrier collection is developed for use in photoelectrochemical (PEC) water-splitting. The oriented NW architecture favors physical matching, providing a direct electron conduction pathway and reducing the diffusion length of photogenerated holes. This work involves a combination of spectral imaging, spectromicroscopy and in situ x-ray absorption spectroscopy; spectra are obtained under operando conditions. Direct investigation of oriented nanowires using polarization-dependent x-ray spectromicroscopy enables the determination of the relationship between anisotropic electronic orbitals and charge carrier water-splitting efficiency. The results of O K-edge STXM demonstrated that the ZnO/Fe2O3 core-shell NW exhibits strong anisotropy and thus provides higher electron-hole transport efficiency than bare ZnO. In situ XAS revealed that interfacial charge transfer between Fe 3d and Zn 4p states enhances the photoelectrochemical reaction in the ZnO/Fe2O3 core-shell NW. The photogenerated electrons of Fe2O3 are transferred from Fe 3d states to the Zn 4p state under photoelectrochemical conditions. |
| 關鍵字 | In situ x-ray absorption spectroscopy;Scanning transmission x-ray microscope;PEC water splitting |
| 語言 | en_US |
| ISSN | 0927-0248 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120666 ) |