Au nanoparticle sensitized ZnO nanopencil arrays for photoelectrochemical water splitting

作者：Wang, Tuo; Lv, Rui; Zhang, Peng; Li, Changjiang; Gong, Jinlong^*

来源：Nanoscale, 2015, 7(1): 77-81.

DOI：10.1039/c4nr03735a

• PHOTOCATALYTIC HYDROGEN EVOLUTION
• ZINC-OXIDE NANOPARTICLES
• NANOWIRE ARRAYS
• GENERATION
• CDS
• SPECTROSCOPY
• NANORODS

This paper describes the synthesis of Au nanoparticle sensitized ZnO nanopencil arrays on F-doped SnO2 substrates by an aqueous chemical growth and subsequent photoreduction method. The Au-ZnO nanopencil arrays yield a photocurrent of similar to 1.5 mA cm(-2) at 1V versus Ag/AgCl. The enhanced photocurrent is attributed to the surface plasmon resonance effect of Au nanoparticles and the prolonged lifetime of the photo-generated electron-hole pairs. The improved stability of ZnO is due to the plasmon resonance energy transfer process enabled by the Au nanoparticles, which enhances the electric field intensity in a small, well-defined location of the ZnO semiconductor.

• 出版日期2015
• 单位天津大学