Three-dimensional plasmonic photoanodes based on Au-embedded TiO(2) structures for enhanced visible-light water splitting.
Three-dimensional plasmonic photoanodes based on Au-embedded TiO(2) structures for enhanced visible-light water splitting.
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DOI：
10.1021/am404738a
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发表时间：
2014-01
影响因子：
9.5
通讯作者：
Zhaoyao Zhan;Jianing An;Huanchao Zhang;R. Hansen;Lianxi Zheng
中科院分区：
文献类型：
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作者：
Zhaoyao Zhan;Jianing An;Huanchao Zhang;R. Hansen;Lianxi Zheng
等离子体辅助可见光发电为直接太阳能燃料生产提供了一种可能的解决方案。在这里，我们研究了等离子体增强的光催化分解水使用不同的TiO 2/Au电极结构。实验数据表明，Au嵌入TiO 2（Au-in-TiO 2）电极大大优于Au坐在TiO 2（Au-on-TiO 2）电极。数值模拟结果表明，半导体中Au纳米颗粒附近的局域电场非常强，导致电子空穴对产生的增强。因此，提出了一种三维Au嵌入TiO 2结构，以进一步提高光吸收和光催化性能。
Plasmon-assisted visible light photocatalysis presents a possible solution for direct solar-to-fuel production. Here we investigate the plasmon-enhanced photocatalytic water splitting using different TiO2/Au electrode structures. Experimental data demonstrates that the Au embedded in TiO2 (Au-in-TiO2) electrode greatly outperforms the Au sitting on TiO2 (Au-on-TiO2) electrode. Numerical simulation shows that the local electric field is very intense in the semiconductor near Au nanoparticles, which causes the enhancement of electron-hole pair generation. A 3D Au-embedded TiO2 structure is thus proposed to further improve the light absorption and photocatalytic performance.