Preparation of Au@Pt Core-Shell Nanoparticles Using Polyelectrolyte Multilayers as Nanoreactors

doi:10.3724/SP.J.1095.2012.20426

Chinese Journal of Applied Chemistry

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Preparation of Au@Pt Core-Shell Nanoparticles Using Polyelectrolyte Multilayers as Nanoreactors

ZHANG Xin, CHU Chengcan, HUANG Kaihua, SU Zhaohui^*

(State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of
Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China)

Received:2012-09-26 Revised:2012-10-15 Published:2012-12-10 Online:2012-12-10

Abstract

Abstract: Polyelectrolyte multilayers were assembled via the layer-by-layer technique from poly(diallyldimethylammonium chloride)(PDDA) and poly(styrene sulfonate)(PSS). AuCl-4 and PtCl2-6, precursor ions for Au and Pt, respectively, were exchanged into the multilayers and then reduced in situ via a sequential anion exchange/reduction process to produce Au@Pt bimetallic nanoparticles in the multilayer films. The core-shell structure of the bimetallic nanoparticles produced was confirmed using ultraviolet-visible absorption spectroscopy(UV-Vis), transmission electron microscopy(TEM) and energy dispersive X-ray spectroscopy(EDX). These core-shell nanoparticles may find application in the fields of electrocatalysis and fuel cells.

Key words: polyelectrolyte multilayer, bimetallic nanoparticles, core-shell

CLC Number:

O631

ZHANG Xin, CHU Chengcan, HUANG Kaihua, SU Zhaohui*. Preparation of Au@Pt Core-Shell Nanoparticles Using Polyelectrolyte Multilayers as Nanoreactors[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2012.20426.

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Preparation of Au@Pt Core-Shell Nanoparticles Using Polyelectrolyte Multilayers as Nanoreactors

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