期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 2, 页码 1139-1144出版社
AMER CHEMICAL SOC
DOI: 10.1021/am404738a
关键词
plasmonic; photocatalytic; water splitting; local electric field; absorption
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 Auembedded TiO2 structure is thus proposed to further improve the light absorption and photocatalytic performance.
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