https://scholars.lib.ntu.edu.tw/handle/123456789/363148
標題: | Plasmonic photocatalyst for H2 evolution in photocatalytic water splitting | 作者: | Chen, J.-J. Wu, J.C.S. Wu, P.C. Tsai, D.P. JEFFREY CHI-SHENG WU |
公開日期: | 2011 | 卷: | 115 | 期: | 1 | 起(迄)頁: | 210-216 | 來源出版物: | Journal of Physical Chemistry C | 摘要: | The effect of surface plasmon resonance (SPR) on the photocatalytic water splitting was studied by employing the photocatalyst, Au/TiO2, to produce renewable solar hydrogen. It is well-known that metal particles on TiO2 can behave as electron traps, retarding the recombination of electron-hole pairs, thereby improving reaction activity. However, the electron trap is not the only mechanism responsible for the photoreaction enhancement. Our experiment on methylene blue photodegradation over Au particles proved that the SPR phenomenon was also involved in the photoreaction enhancement. Furthermore, the photocatalytic water splitting was performed on Au/TiO 2 prepared by the photodeposition method. The production of hydrogen was significantly increased because Au particles not only acted as electron traps as well as active sites but also played an important role in the SPR enhancement. The intensified electric field at the interface between the Au particle and the subdomain on TiO2 was illustrated by finite element method (FEM) electromagnetic simulation. © 2010 American Chemical Society. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-78651067078&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/363148 |
DOI: | 10.1021/jp1074048 | SDG/關鍵字: | Active site; Au particles; Electromagnetic simulation; Electron hole pairs; Metal particle; Methylene Blue; Photo-deposition; Photocatalytic water splitting; Photoreactions; Plasmonic; Production of hydrogen; Reaction activity; Solar hydrogen; Subdomain; TiO; Electric fields; Electron traps; Electrons; Finite element method; Hydrogen; Photoreactivity; Plasmons; Solar power generation; Surface plasmon resonance |
顯示於: | 化學工程學系 |
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