Abstract
Abstract Si-doped TiO 2 nanoparticles with anatase crystalline phase were prepared by a hydrothermal method using acetic acid as the solvent. Photoelectrochemical studies showed that the photocurrent value for the 15% Si-doped TiO 2 electrode (54.4 μA) was much higher than that of the pure TiO 2 electrode (16.7 μA). In addition, the 15% Si-doped TiO 2 nanoparticles displayed the highest photocatalytic activity under ultraviolet light irradiation. So doping suitable amount of Si in TiO 2 nanoparticles was profitable for transferring photogenerated electrons and inhibiting the recombination of photogenerated electrons and holes. As a result, the photocatalytic activity of TiO 2 nanoparticles was improved.
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