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Decoration of carbon nanotubes with gold nanoparticles by electroless deposition process using ethylenediamine as a cross linker

Published online by Cambridge University Press:  09 September 2016

Aliyu Muhammad
Affiliation:
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
Nor Azah Yusof*
Affiliation:
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; and Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
Reza Hajian*
Affiliation:
Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
Jaafar Abdullah
Affiliation:
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; and Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
*
a) Address all correspondence to these authors. e-mail: [email protected]
b) e-mail: [email protected]
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Abstract

Herein, we present a method for decorating multi-walled carbon nanotubes (MWCNTs) with gold nanoparticles (AuNPs) using ethylenediamine (en) as a linker between MWCNTs and AuNPs. The amine group in en is as growth points for synthesis of AuNPs through electrostatic attraction between the amine groups and ${\rm{AuCl}}_4^ -$ anion while sodium citrate act as reducing agent. The influence of HAuCl4 concentration on the size and distribution of AuNPs in the structure of the Au-decorated nanotubes were investigated. Morphology of the decorated nanotubes was characterized by field emission scanning electron microscopy and transmission electron microscopy while the elemental composition of the decorated tubes and crystallography were investigated by energy dispersive x-ray, x-ray diffraction, Raman spectroscopy, and Fourier transform infrared techniques. Cyclic voltammetric and electrochemical impedance spectroscopic analysis revealed that the Au-decorated nanotubes have increased the electro-active surface area and conductivity of electrochemical substrate.

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Articles
Copyright
Copyright © Materials Research Society 2016 

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