Enhanced Photoelectrochemical Cell Property from α-Fe2O3 Nanoparticle Decoration on Vertically Grown TiO2 Nanotubes Arrays
Abstract:TiO2 nanotube arrays decorated with α-Fe2O3 were prepared by forming a nanotube-like TiO2 film on a Ti sheet using an anodization process, followed by electrochemical deposition to decorate hematite (α-Fe2O3) nanoparticles on the TiO2 nanotube arrays. The SEM and XRD results revealed that the α-Fe2O3 nanoparticles were homogeneously embedded on the surface of the TiO2 nanotube arrays. The photoelectrochemical properties of the α-Fe2O3/TiO2 nanotube arrays as photoanode were studied by photocurrent–potential behavior in 1 M NaOH electrolyte under 100 mW/cm2 UV-Visible light irradiation. Also, the length dependence of TiO2 nanotubes and the amount dependence of α-Fe2O3 nanoparticles on the photocatalytic ability were studied and thus the optimum conditions were determined.
Document Type: Research Article
Publication date: 2011-08-01
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