Authors: Yuan Yu Xiujuan Yu Shilin Yang
Publish Date: 2015/05/13
Volume: 26, Issue: 8, Pages: 5715-5723
Abstract
The highly oriented CeO2/TiO2 nanotube arrays CeO2/TiO2 NTAs were fabricated by the electrodeposition of CeO2 in 10 mol/L Na2SO4 aqueous solution on TiO2 NTAs CeO2/TiO2 NTAs were characterized by SEM TEM XRD XPS Its ultraviolet–visible absorption and photoelectrochemical properties were investigated The degradation of methyl orange was used to evaluate the photoelectrocatalytic activity of CeO2/TiO2 NTAs The results showed that the CeO2 nanoparticles with a homogenous spherical size of about 15 nm were uniformly deposited onto the surface of TiO2 NTAs The CeO2 composed with Ce4+ and Ce3+ ions could be observed CeO2/TiO2 NTAs exhibited a stronger UV and visible light absorptions with 40 nm redshift of the absorption edge compared with TiO2 NTAs The separation efficiency of the photogenerated charge carriers of CeO2/TiO2 NTAs can significantly enhanced by the CeO2 deposited The removal efficiencies 981 of methyl orange at the CeO2/TiO2 NTAs photoelectrodes was larger than that of the bare TiO2 nanotube arrays photoelectrode 781
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