Synthesis of novel CuWO4/Kaolin photocatalyst for efficient degradation of Congored dye under visible light irradiation
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초록
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A novel Triclinic structured CuWO4 deposited kaolin (CuWO4/kaolin) photocatalyst was fabricated via facile wet chemical methods. The materials were characterized by UV-vis-DRS, XRD, SEM, TEM, HR-TEM, XPS, FT-IR, and B.E.T analysis. The photocatalytic activities were evaluated by the degradation of Congored in aqueous solution. The degradation rate maintained 97 % after five successive photocatalytic reaction cycles in the presence of composite. The results indicated that enhanced photocatalytic performance of the composites was ascribed to the exposed active sites originated from the improved specific surface area, good interfacial interaction between CuWO4 and kaolin, and furthermore, kaolin ability to lead the photo-induced electron transferred directionally to achieve separation of h+/e- pairs.