Decoration of carbon nanotubes with gold nanoparticles by electroless deposition process using ethylenediamine as a cross linker. Issue 18 (9th September 2016)

• Record Type: Journal Article
• Authors: Muhammad, Aliyu; Yusof, Nor Azah; Hajian, Reza; Abdullah, Jaafar
• Is Part Of: Journal of materials research. Volume 31:Issue 18(2016)
• Page Start: 2897
• Page End: 2905
• Publication Date: 2016-09-09
• Subjects: conductivity, -- electro-active surface area, -- characterization; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2016.304
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: 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.