Synthesis and photocatalytic activity of composite Cu2O-TiO2 under visible light
Abstract
Composite xCu2O-TiO2, where x is the ratio of Cu2O/(TiO2 + Cu2O) in weight, were synthesized by a two-step process. Firstly, Cu2O nanocubes were synthesized via soft-template method. Then, Cu2O were combined with TiO2 through in-situ hydrolysis of Ti(OC3H7)4 in ethanol solvent. The resulting materials were characterized by X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), and UV-vis diffuse reflection spectroscopy (UV-Vis DRS) and X-ray photoelectron spectroscopy (XPS). The results of photocatalytic activity test showed that xCu2O-TiO2 materials can act as a photocatalyst in the photodegradation of methylene blue in aqueous solution under visible light and the catalytic activity depends on the content of Cu2O in the materials.
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