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One-step synthesis of monodisperse gold dendrite@polypyrrole core-shell nanoparticles and their enhanced catalytic durability

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Abstract

Colloidal noble metal-conducting polymer core–shell nanoparticles show promising applications in a wide diversity of areas, but it remains a great challenge to develop a convenient synthetic method allowing strict control over their size/dimension and facile modulation of their nanostructures. In this work, we report the synthesis of monodisperse gold dendrite@polypyrrole (AuD@PPy) core–shell nanoparticles with an eco-friendly one-step solution reaction by triggering oxidative polymerization of pyrrole with tetrachloroauric acid. As-prepared AuD@PPy nanoparticle is composed of a gold dendrite core coated by a thin PPy shell; the size and the thickness of the PPy shell could be adjusted by simply changing the pyrrole concentration. Benefiting from the protective effect of the PPy shell, the nanoparticles demonstrate enhanced catalytic durability toward the reductive reaction of methylene blue (MB) compared with the citrate-capped gold nanoparticles (AuNPs).

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (nos. 21205098 and 21273173), Natural Science Foundation Project of CQ CSTC (cstc2012jjA10099), Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing International Collaboration Base for Science and Technology (Southwest University), Start-up grant under SWU111071 from Southwest University, Chongqing Science and Technology Commission under cstc2012gjhz90002.

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  1. Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing, 400715, China

    Weihua Hu, Hongming Chen & Chang Ming Li

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  1. Weihua Hu
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  2. Hongming Chen
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  3. Chang Ming Li
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Correspondence to Weihua Hu.

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Hu, W., Chen, H. & Li, C.M. One-step synthesis of monodisperse gold dendrite@polypyrrole core-shell nanoparticles and their enhanced catalytic durability. Colloid Polym Sci 293, 505–512 (2015). https://doi.org/10.1007/s00396-014-3440-4

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  • DOI: https://doi.org/10.1007/s00396-014-3440-4

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