Investigation of commercial PbCrO4/TiO2 for photodegradation of rhodamine B in aqueous solution by visible light

Springer Science and Business Media LLC - Tập 2 - Trang 1-10 - 2017
Z. M. Abou-Gamra1, M. A. Ahmed1, M. A. Hamza1
1Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt

Tóm tắt

This study throws light on utilization of visible light in removal dyes from wastewater using commercial PbCrO4/TiO2(P-25) composite which was prepared by grinding TiO2(P-25) with PbCrO4 to decrease the adhesion properties of PbCrO4. As-prepared catalyst was characterized by DRS, XRD and N2 adsorption–desorption. The morphology was examined by SEM. The photodegradation of rhodamine B (Rh B) product in the presence of PbCrO4/TiO2(P-25) composite was dependent on the pH of the medium. In 2 < pH < 10, Rh B was involved in photodegradation via N-deethylation terminated at rhodamine 110 while at pH = 2 rhodamine 110 underwent chromophore destruction. Obtained data showed that HO 2 • /O 2 •− species were involved in degradation of dye. Commercial PbCrO4/TiO2(P-25) composite is considered as good visible light-sensitive photocatalyst for removing Rh B.

Tài liệu tham khảo

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