Publication: Facile preparation of gold nanoparticle modified pencil graphite electrode
0
0
Issued Date
2017
Resource Type
File Type
application/pdf
ISSN
10139826
Other identifier(s)
2-s2.0-85015103817
Rights Holder(s)
Scopus
Bibliographic Citation
Key Engineering Materials. Vol 730 KEM, (2017), p.177-182
Suggested Citation
Puttharugsa C., Limnonthakul P. Facile preparation of gold nanoparticle modified pencil graphite electrode. Key Engineering Materials. Vol 730 KEM, (2017), p.177-182. doi:10.4028/www.scientific.net/KEM.730.177 Retrieved from: https://hdl.handle.net/20.500.14740/4368
Author(s)
Abstract
The purpose of this research was to prepare gold nanoparticle (AuNP) modified disposable pencil graphite electrode (PGE). The AuNP was prepared using trisodium citrate reduced gold ion solution. The PGE surface modification was carried out by immersing a bare PGE in poly (diallyldimethylammonium chloride) (PDDA) and then in AuNP solution at room temperature. The characterization of the bare and modified PGE surfaces was carried out using field emission scanning electron microscopy (FESEM) and cyclic voltammetry in the presence of 0.1 M NaOH. The electrochemical behavior of the modified PGE electrode was investigated using cyclic voltammetry, and impedance spectroscopy in the presence of 5 mM [Fe(CN)6]3-/4- redox probe solution. The obtained result indicated that the modification of AuNP on the PGE surface provided a good electrochemical signal. In order to obtain more sensitive electrochemical signals, the effect of adsorbed AuNP on the PGE surface was also studied. © 2017 Trans Tech Publications.
Subject(s)
Chlorine compounds
Cyclic voltammetry
Electrochemical impedance spectroscopy
Field emission microscopes
Gold nanoparticles
Graphite
Graphite electrodes
Metal nanoparticles
Scanning electron microscopy
Sodium hydroxide
Electrochemical behaviors
Electrochemical signals
Facile preparation
Field emission scanning electron microscopy
Impedance spectroscopy
Pencil graphite electrode
Poly (diallyldimethylammonium chloride)
Tri-sodium citrates
Electrochemical electrodes
Cyclic voltammetry
Electrochemical impedance spectroscopy
Field emission microscopes
Gold nanoparticles
Graphite
Graphite electrodes
Metal nanoparticles
Scanning electron microscopy
Sodium hydroxide
Electrochemical behaviors
Electrochemical signals
Facile preparation
Field emission scanning electron microscopy
Impedance spectroscopy
Pencil graphite electrode
Poly (diallyldimethylammonium chloride)
Tri-sodium citrates
Electrochemical electrodes