Abstract
In this work, a series of TiO2/BiOI heterojunctions with enhanced photocatalytic activity were prepared by a facile hydrothermal synthesis. The results indicate that the separation efficiency of the photogenerated carriers of the samples is significantly improved and more oxygen vacancies (OVs) were introduced. Using rhodamine B (RhB) as a simulated pollutant, activity of the samples was evaluated by decontamination of RhB. The results show that the photocatalytic activity of TiO2/BiOI heterojunctions under simulated sunlight shine is nearly 4 times higher than that of the neat BiOI. Given the observations, the separation of photoactivated carriers follows a step -scheme mechanism.
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