Issue 107, 2015

Preparation of PdxAuy bimetallic nanostructures with controllable morphologies supported on reduced graphene oxide nanosheets and wrapped in a polypyrrole layer

Abstract

In this paper, we have introduced a one-step method to prepare PdxAuy bimetallic nanostructures supported on reduced graphene oxide (rGO) nanosheets and wrapped in a polypyrrole (PPy) layer. By using a pyrrole monomer as a special reducing agent for metal salts, the morphologies of PdxAuy bimetallic nanostructures could be easily turned to be spherical, coral-like and porous cluster-like via simply changing dosage or molar ratio of PdCl2 and HAuCl4·4H2O. The roles of the pyrrole monomer and rGO support in formation of rGO/PdxAuy/PPy composites were investigated in detail. Transmission electron microscopy, elemental mapping analysis, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier-transform infrared spectra were used to characterize their morphologies, structures and compositions. Compared with corresponding rGO/Pd/PPy and rGO/Au/PPy composites, the as-prepared rGO/PdxAuy/PPy composites displayed enhanced catalytic activity towards the reduction of 4-nitrophenol.

Graphical abstract: Preparation of PdxAuy bimetallic nanostructures with controllable morphologies supported on reduced graphene oxide nanosheets and wrapped in a polypyrrole layer

Supplementary files

Article information

Article type
Paper
Submitted
24 Aug 2015
Accepted
07 Oct 2015
First published
09 Oct 2015

RSC Adv., 2015,5, 87831-87837

Author version available

Preparation of PdxAuy bimetallic nanostructures with controllable morphologies supported on reduced graphene oxide nanosheets and wrapped in a polypyrrole layer

T. Yao, Q. Zuo, H. Wang, J. Wu, X. Zhang, J. Sun and T. Cui, RSC Adv., 2015, 5, 87831 DOI: 10.1039/C5RA17081H

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