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Gold Surface Functionalization with S‐containing Organic Compounds and Gold Nanoparticles for Ethylene Glycol Electrooxidation
Author(s) -
Łuczak Teresa,
Bułat Kornela
Publication year - 2016
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201500536
Subject(s) - ethylene glycol , colloidal gold , detection limit , surface modification , electrode , nanoparticle , ethylene , chemistry , electrochemistry , nuclear chemistry , catalysis , inorganic chemistry , materials science , nanotechnology , organic chemistry , chromatography
In this work a gold electrode modified with self‐assembled layers (SAMs) composed with organic S‐containing compound and gold nanoparticles was prepared. The electrode with SAMs endowed with gold nanoparticles gave the high catalytic effect for ethylene glycol (EG) electrooxidation in solution at pH 7. For this novel sensor a linear relationship between the current response of EG at the potential of peak maximum ( j p ) and the concentration of this compound in solution ( c EG ) was found over the range 0.1 µM to 0.7 M with the detection sensitivity j p / c EG equal to about 5 A cm −2 mol −1 dm 3 (at v= 0.1 V s −1 ) and the detection limit of 0.046 µM.