Three-Dimensional Plasmonic Photoanodes Based on Au-Embedded TiO2 Structures for Enhanced Visible-Light Water Splitting

被引：100

作者：

Zhan, Zhaoyao ^{[1
]}

An, Jianing ^{[1
]}

Zhang, Huanchao ^{[1
]}

Hansen, Reinack Varghese ^{[1
]}

Zheng, Lianxi ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 02期

关键词：

plasmonic; photocatalytic; water splitting; local electric field; absorption; NANOWIRE ARRAYS; HYDROGEN EVOLUTION; H-2; PRODUCTION; SOLAR; GOLD; GRAPHENE; OXIDE; PHOTOELECTRODES; PHOTOCATALYSIS;

D O I：

10.1021/am404738a

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：1139 / 1144

页数：6

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