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A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates
Published on: May 9, 2014
Au nanoparticles embedded in BiVO4 films photoanode with enhanced photoelectrochemical performance
Guowei Tang1, Hongxing Li1, Chuanwei Cheng2,3
1Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronics, Xiangtan University, Hunan 411105, People's Republic of China.
Abstract:
In this work, we report the fabrication of Au nanoparticles embedded in BiVO4 films photoanode for photoelectrochemical (PEC) application by a facile electrochemical deposition and sputtering process. The Au NPs/BiVO4 films photoanode decorated with Co-Pi yields significantly improved PEC performance with a maximum photocurrent density of ∼3.1 mA cm-2 at 1.23 V versus RHE. The significantly enhanced performance could be attributed to the introduction of Au nanoparticles, which leads to enhancement of light absorption arising from surface plasmon resonance effect of nanosized Au and improved charge transfer and separation efficiency resulted by increased carrier density and charge transport property by the Au metal doping effect.
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