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In situ fabrication of platinum/graphene composite shell on polymer microspheres through reactive self-assembly and in situ reduction

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Abstract

We present a simple method to fabricate a uniform-sized graphene–metal–polymer composite microsphere of core–shell structure. On the surface of amine-functionalized polymer microsphere, graphene oxide (GO) sheets were affixed to give a core–shell structure by self-assembly process followed by the immobilization of platinum (Pt) ions to the assembled GO shell. Subsequently, they were chemically reduced in situ converting both GO and Pt ions to reduced GO (RGO) and Pt nanoparticles (NPs), respectively. As a result, a robust RGO-Pt composite shell, composed of RGO sheets and well-distributed Pt NPs, was fabricated on the microsphere surface. Meanwhile, the insulative GO shell was converted to the conductive RGO-Pt shell giving 24.0 S m−1 of electrical conductivity. We demonstrated that the electrical property of the shell was significantly improved by the incorporation of Pt NPs.

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Acknowledgements

This research was supported by WCU (World Class University) Program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology (No. R31-2008-000-10029-0). The authors also acknowledge the instrumental and technical support provided by the GRRC program from Gyeonggi Province.

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, Sungkyunkwan University, Jangan-gu, Suwon, 440-746, South Korea

    Joon-Suk Oh, Nguyen Dang Luong, Tae-Seon Hwang, Jung-Pyo Hong & Jae-Do Nam

  2. School of Chemical Engineering, Sungkyunkwan University, Suwon, South Korea

    Young Kwan Lee

  3. Polymer Technology, Department of Biotechnology and Chemical Technology, School of Chemical Technology, Aalto University, P.O. Box 16100, 00076, Aalto, Finland

    Nguyen Dang Luong

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  1. Joon-Suk Oh
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  2. Nguyen Dang Luong
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  4. Jung-Pyo Hong
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  5. Young Kwan Lee
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Correspondence to Jae-Do Nam.

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Oh, JS., Luong, N.D., Hwang, TS. et al. In situ fabrication of platinum/graphene composite shell on polymer microspheres through reactive self-assembly and in situ reduction. J Mater Sci 48, 1127–1133 (2013). https://doi.org/10.1007/s10853-012-6848-6

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  • DOI: https://doi.org/10.1007/s10853-012-6848-6

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