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South African Journal of Chemistry

On-line version ISSN 1996-840X
Print version ISSN 0379-4350


CHANGA, Wei et al. Synthesis and photocatalytic activity of ZnxCd1-xS/TiO2 heterostructures nanofibre prepared by combining electrospinning and hydrothermal method. S.Afr.j.chem. (Online) [online]. 2015, vol.68, pp.138-142. ISSN 1996-840X.

The ZnxCd1-xS/TiO2 hierarchical heterostructures were successfully fabricated by combining electrospinning technology and hydrothermal methods. The morphology, crystallinity, composition and band gap of ZnxCd1-xS/TiO2 were characterized by SEM, XRD, EDS, and UV-vis diffuse reflectance spectroscopy. The results indicated the sulphur concentration had a significant influence on the composition and morphology of the products. The values of the band gap energy for ZnxCd1-xS/TiO2 varied from 2.33 to 2.66 eV with the change of sulphur concentration. When the molar ratio of S/Ti was 0.96, the ZnxCd1xS/TiO2 hierarchical heterostructures exhibited enhanced visible light photocatalytic behaviour for the decomposition of Rhodamine B (RhB) under visible light irradiation. The photocatalytic degradation of RhB followed first-order reaction kinetics.

Keywords : Electrospinning; heterostructures; photocatalysis; dye degradition.

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