Evaluating the electric property of different crystal faces and enhancing the Raman scattering of Cu2O microcrystal by depositing Ag on the surface |
| |
| Authors: | Hong Gao Junying Zhang Min Li Kejia Liu Dong Guo Yue Zhang |
| |
| Institution: | 1. Key Laboratory of Micro-nano Measurement, Manipulation and Physics (Ministry of Education), Department of Physics, Beihang University, Beijing 100191, China;2. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;3. School of Materials Science and Engineering, Beihang University, Beijing 100191, China |
| |
| Abstract: | The surface electric property of Cu2O microcrystal affects the interaction of facets with substance in the aqueous solution, and hence plays a key role in determining the photocatalytic activity. In this paper, the capability of Cu2O microcrystals with exclusive {111}, {110} or both lattice surfaces in reducing Ag+ to Ag0 were investigated. Ag particles selectively deposited on {111} surfaces of Cu2O, while not on {110} surfaces. The different behaviors of the two surfaces are mainly attributed to their different electric properties: negatively-charged {111} surfaces absorb Ag+ ions while positively-charged {110} surfaces repel them. Raman scattering of Cu2O {111} surfaces was enhanced by the photo-deposition of Ag particles. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
