Growth of TiO2 nanotube arrays with simultaneous Au nanoparticles impregnation: photocatalysts for hydrogen production

Journal of the Brazilian Chemical Society

Adriano F. Feil²  Pedro Migowski¹  Francine R. Scheffer¹  Matheus D. Pierozan²  Rodrigo R. Corsetti²  Melissa Rodrigues¹  Rafael P. Pezzi¹  Giovanna Machado¹  Livio Amaral²  Sérgio R. Teixeira²  Daniel E. Weibel¹  Jairton Dupont¹ 

[1] ,Universidade Federal do Rio Grande do Sul Instituto de Física Porto Alegre RS ,Brazil

关键词: water splitting;    hydrogen production;    photocatalysis;    titanium dioxide nanotubes;    nanoparticles;   

DOI  :  10.1590/S0103-50532010000700023

来源: SciELO

【 摘 要 】

A novel method for the fabrication of TiO2 nanotubes (NTs) impregnated with gold nanoparticles (NPs) is reported. TiO2 NT arrays were grown by anodic oxidation of Ti metal using fluoride electrolytes containing Au NPs. Resulting structures were characterized by Rutherford backscattering spectrometry (RBS), grazing incidence X-ray diffractometry (GIXRD), transmission and scanning electron microscopy (SEM and TEM) and UV-Vis spectroscopy. Au-free and Au-impregnated TiO2 NT arrays showed good and stable photocatalytic activity for hydrogen generation from water/methanol solutions. Au-containing TiO2 NTs presented higher hydrogen photogeneration activity than Au-free TiO2 NTs.

【 授权许可】

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