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Poly(vinyl-pyrrolidone) assisted hydrothermal synthesis of flower-like CdS nanorings

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Abstract

Well-defined CdS nanorings with flower-like morphology were synthesized by a hydrothermal method using poly(vinyl-pyrrolidone) as capping agent. The phase composition, morphology, structure, and optical properties of CdS nanorings were characterized by X-ray diffraction (XRD), scanning electron microscope, transmission electron microscopy, and UV–vis absorption spectroscopic techniques. The XRD pattern of the sample can be indexed to the cubic zinc blende phase CdS. According to the quantitative analysis of energy-dispersive spectrum, the Cd:S molar ratio of the sample is about 1:0.96. The possible formation mechanism of the CdS nanorings is proposed which is based on time-resolved experiments. Furthermore, the absorption peak of CdS nanorings is red-shifted to 523 nm in the UV–vis absorption spectrum.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (No. 50903045) and the Provincial Natural Science Foundation (No. Z2005F03).

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Authors and Affiliations

  1. Institute of Polymer Materials, Qingdao University, Qingdao, 266071, China

    Guojun Song, Hui Zhang, Jianjiang Li, Zhi Peng, Xiaoru Li & Lina Chen

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  1. Guojun Song
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  2. Hui Zhang
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  3. Jianjiang Li
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  4. Zhi Peng
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  5. Xiaoru Li
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  6. Lina Chen
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Correspondence to Guojun Song.

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Song, G., Zhang, H., Li, J. et al. Poly(vinyl-pyrrolidone) assisted hydrothermal synthesis of flower-like CdS nanorings. Polym. Bull. 68, 2061–2069 (2012). https://doi.org/10.1007/s00289-012-0717-y

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  • DOI: https://doi.org/10.1007/s00289-012-0717-y

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