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Facile synthesis of micrometer FeS/PVP architectures with the aid of thiourea

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Abstract

Micrometer-sized flowerlike FeS/poly(vinyl pyrrolidone)(PVP) architectures were synthesized by solvothermal process with the aid of thiourea, in which PVP may serve as soft templates. The FeS/PVP flowers have uniform morphologies with an average diameter of 5 μm, made of several nanopetals. The formation of FeS/PVP flowers is a new kinetic control process. In this process, thiourea molecules would be decomposed to produce “gas bubble”, and the “gas bubble” could make PVP chain segment rearrange along exterior force, resulting in the morphology evolution. The higher “gas bubble” pressure would produce 3D flowers, and the lower pressure would give a hollow structure. The evolution process from particles to 3D flowers is observed for the first time. In addition, the hollow FeS/PVP and Cu2S/PVP spheres are also obtained by this technique.

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Acknowledgment

This work was supported by the National Science Foundation of China (No. No. 20671029), Outstanding Youth Foundation of Henan Province (No.0612002900) and “973”project (2007CB607606).

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Authors and Affiliations

  1. Key Laboratory for Special Functional Materials, Henan University, Kaifeng, 475004, People’s Republic of China

    Yanbao Zhao, Yuanchun Qi, Lei Sun & Zhishen Wu

  2. College of Computer and Information Engineering, Henan University, Kaifeng, 475004, People’s Republic of China

    Li Yao

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  1. Yanbao Zhao
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  2. Li Yao
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  3. Yuanchun Qi
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  4. Lei Sun
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  5. Zhishen Wu
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Correspondence to Yanbao Zhao.

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Zhao, Y., Yao, L., Qi, Y. et al. Facile synthesis of micrometer FeS/PVP architectures with the aid of thiourea. J Sol-Gel Sci Technol 50, 3–7 (2009). https://doi.org/10.1007/s10971-009-1912-7

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  • DOI: https://doi.org/10.1007/s10971-009-1912-7

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