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Synthesis and characterization of single-crystalline CdS nanorods prepared by γ-irradiation

Published online by Cambridge University Press:  31 January 2011

Haijiao Zhang
Affiliation:
Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, China
Gang Liu
Affiliation:
School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
Xiaojuan Wan
Affiliation:
School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
Huijiao Guo
Affiliation:
Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, China
Zheng Jiao*
Affiliation:
Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, China
Minghong Wu*
Affiliation:
School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
*
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Abstract

Under γ-irradiation, thiacetamide (TAA) releases S2− in acidic solutions (e.g., pH = 3), and the S2− can react with available Cd2+ in soft templates to form CdS nanorods. Single-crystalline CdS nanorods were prepared in this study. The effects of various synthesis parameters on the crystalline type, morphology, average particle size, and photoelectric properties were thoroughly investigated, including the concentrations of reactants, dose of irradiation, and the type and dosage of templates. The structure and selected physical and chemical properties of products were characterized by x-ray diffraction (XRD), Fourier transform infrared (FTIR), ultraviolet-visible (UV-vis), selected area electron diffraction (SAED), transmission electron microscopy (TEM), and photoluminescence (PL) spectrophotometer techniques. Results indicated that the ratio of reactants to templates greatly affected the morphology of CdS nanorods; the types of soft templates also had significant effects on the morphology and crystalline type of the nanorod products.

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Articles
Copyright
Copyright © Materials Research Society 2009

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