光催化
催化作用
等离子体子
罗丹明6G
铜
纳米颗粒
材料科学
罗丹明B
纳米技术
光化学
表面等离子共振
金属
化学工程
化学
分子
光电子学
有机化学
冶金
工程类
作者
Lili He,Changqing Liu,Jia Tang,Yu Zhou,Jiugang Hu,Ruiyu Liu,Jiugang Hu
标识
DOI:10.1016/j.apsusc.2017.10.155
摘要
In-situ SERS monitoring of direct plasmon-driven photocatalysis was achieved using relatively earth-abundant Cu NPs following their decoration with tiny amounts of silver, which promoted excellent SERS and high catalytic activity. The SERS and catalytic performance of the Ag-Cu NPs can be tuned by changing their composition. In particular, it was found that the surface oxidation state of copper could be switched to its metallic state via self-plasmon catalysis under laser irradiation, highlighting the potential of air-unstable copper NPs as stable plasmonic catalysts. These dual functional Ag-Cu NPs were used for SERS real-time monitoring of plasmon-driven photocatalysis reactions involving the degradation of Rhodamine 6G and the dimerization of 4-nitrothiophenol. The corresponding catalytic reaction mechanisms were discussed.
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