Synthesis of nanocomposite, (CdxZn1-x)S by gamma-irradiation in an aqueous system |
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| Authors: | Ekoko Bakambo Gracien Zhou Ruimin Li Jian Xin Li Hui and Tondozi Keto |
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| Institution: | (1) School of Environmental and Chemical Engineering, Shanghai University, 200072 Shanghai, P.R. China E-mail;(2) School of Geophysics and Geodetection, Applied Geophysics, China, University of Geosciences, 430074 Wuhan, Hubei Province, P.R. China |
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| Abstract: | Gamma-irradiation has been applied to synthesize the nanocomposite semiconductor constituted of zinc and cadmium sulfide Cd1-xZnxS ultra fine particles at room temperature by utilizing homogeneous release of S2– ions from the decomposition of sodium thiosulfate. The structure, morphology, size and optical properties of that compound have been studied by X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and ultraviolet-visible spectrometer (UV-visible). The product obtained from irradiated solutions containing zinc ions, cadmium ions and the sulfur source has been characterized as a composite of (CdxZn1-x)S, with spherical morphology and with a diameter of average size of about 5.3 nm. The possible mechanism of formation of the composite is proposed.The financial support of Shanghai Science and Technology Foundation through No. 0252nm 095 is gratefully acknowledged.The authors would thank the staff of Shanghai Applied Radiation Institute of Shanghai University for their valuable contributions. |
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