Frontiers of Materials Science

, Volume 11, Issue 1, pp 42–50 | Cite as

Construction of Au@Pt core—satellite nanoparticles based on in-situ reduction of polymeric ionic liquid protected gold nanoparticles

  • Wenlan Wu
  • Junbo Li
  • Sheng Zou
  • Jinwu Guo
  • Huiyun Zhou
Research Article


A method of in-situ reduction to prepare Au@Pt core-satellite nanoparticles (NPs) is described by using Au NPs coating poly[1-methyl 3-(2-methacryloyloxy propylimidazolium bromine)] (PMMPImB-@-Au NPs) as the template. After electrostatic complex chloroplatinic acid with PMMPImB shell, the composite NP was directly reduced with N2H4 to produce Au@Pt core-satellite NPs. The characterization of composite and core-satellite NPs under different amounts of chloroplatinic acid were studied by DLS, UV-vis absorption spectrum and TEM. The satellite Pt NPs with a small size (~2 nm) dotted around Au core, and the resulting Au@Pt core-satellite NPs showed a red-shift surface plasmon resonance (SPR) and a good dispersion due to effectively electrostatic repulsion providing by the polymeric ionic liquid (PIL) shell. Finally, Au@Pt core-satellite NPs exhibit an enhanced catalytic activity and cycled catalytic capability for the reduction of p-nitrophenol with NaBH4.


polymeric ionic liquid gold nanoparticles platinum nanoparticles core-satellite 


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We acknowledge the financial support from the National Natural Science Foundation of China (Grant Nos. 51103035 and 51403055).


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Copyright information

© Higher Education Press and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Wenlan Wu
    • 2
  • Junbo Li
    • 1
  • Sheng Zou
    • 1
  • Jinwu Guo
    • 1
  • Huiyun Zhou
    • 1
  1. 1.College of Chemical Engineering & PharmaceuticsHenan University of Science & TechnologyLuoyangChina
  2. 2.Medical SchoolHenan University of Science & TechnologyLuoyangChina

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