Abstract
In this manuscript highly ordered free-standing TiO2 nanotube arrays (TNAs) were fabricated by anodization of Ti foils, and subsequently transferred onto glass substrates with TiO2 sol. CdS-modified TNAs/glass nanostructures were constructed by the sequential-chemical bath deposition (S-CBD) method. Using methyl orange (MO) as the model pollutant, optimal S-CBD cycles for the best photocatalytic activity were selected and the effect of the annealing temperature on photocatalytic activity was studied in detail. For such large-scale transparent CdS-TNAs/glass structured photocatalyst, wide spectral response, suitable match of the band levels, higher electrical conductivity and higher light efficiency are mainly responsible for its enhanced photocatalytic activity. Typically, the photodegradation rate (K) reaches to 6.85×10−3min−1, which is 3.6 times to that of bare TNAs/glass samples under the same conditions.
Published Version
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