Plasmonic enhancements of photocatalytic activity of Pt/n-Si/Ag photodiodes using Au/Ag core/shell nanorods.
Plasmonic enhancements of photocatalytic activity of Pt/n-Si/Ag photodiodes using Au/Ag core/shell nanorods.
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DOI：
10.1021/ja204383q
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发表时间：
2011-10-26
影响因子：
15
通讯作者：
Duan, Xiangfeng
中科院分区：
文献类型：
--
作者：
Qu, Yongquan;Cheng, Rui;Su, Qiao;Duan, Xiangfeng
报道了利用Au/Ag核/壳纳米棒等离子体增强铂/n-Si/Ag光催化剂的光催化性能。我们发现，Au/Ag核/壳纳米棒可以用可调的等离子体激元共振频率合成，并利用精确的化学方法结合到铂/n-硅/银光电二极管上。光催化研究表明，金/银核/壳纳米棒的偶联可以显著提高光催化活性3倍以上。光谱依赖性研究进一步揭示了光催化增强与Au/Ag核/壳纳米棒的等离子体吸收光谱密切相关，明确地证明了等离子体增强效应。
We report the plasmonic enhancement of the photocatalytic properties of the Pt/n-Si/Ag photodiode photocatalysts using Au/Ag core/shell nanorods. We show that Au/Ag core/shell nanorods can be synthesized with tunable plasmon resonance frequencies, and conjugated onto Pt/n-Si/Ag photodiodes using well-defined chemistry. Photocatalytic studies show that the conjugation with Au/Ag core/shell nanorods can significantly enhance the photocatalytic activity by more than 3 times. Spectral dependence studies further reveal the photocatalytic enhancement is strongly correlated with plasmonic absorption spectra of the Au/Ag core/shell nanorods, unambiguously demonstrating the plasmonic enhancement effect.
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