Characterisation of gold electrodes modified with self-assembled monolayers of l-cysteine for the adsorptive stripping analysis of copper Yang, Wenrong, Gooding, J. Justin and Hibbert, D. Brynn 2001, Characterisation of gold electrodes modified with self-assembled monolayers of l-cysteine for the adsorptive stripping analysis of copper, Journal of electroanalytical chemistry, vol. 516, no. 1-2, pp. 10-16, doi: 10.1016/S0022-0728(01)00649-0. Attached Files Name Description MIMEType Size Downloads Title Characterisation of gold electrodes modified with self-assembled monolayers of l-cysteine for the adsorptive stripping analysis of copper Author(s) Yang, Wenrong orcid.org/0000-0001-8815-1951 Gooding, J. Justin Hibbert, D. Brynn Journal name Journal of electroanalytical chemistry Volume number 516 Issue number 1-2 Start page 10 End page 16 Publisher Elsevier Place of publication Amsterdam, The Netherlands Publication date 2001-12-14 ISSN 0368-1874 Keyword(s) self-assembled monolayers I-Cysteine modified gold electrode Cu(II) analysis XPS adsorptive stripping voltammetry Summary Electrochemical sensors for copper ions in environmental samples were prepared by modifying gold electrodes with l-cysteine by self-assembly. The adsorption of l-cysteine on gold electrodes was studied by electrochemical reductive desorption in 0.5 M KOH, and the interaction of l-cysteine with copper ions was investigated by cyclic voltammetry, chronoamperometry and X-ray photoelectron spectroscopy. At low concentrations the ratio of l-cysteine to bound Cu(II) is 2:1. At higher concentrations (0.1 M) copper reacts with adsorbed cysteine forming copper sulfide on the electrode surface. On a modified l-cysteine gold electrode, Osteryoung square wave voltammetric determination of Cu(II) with a detection limit below 5 ppb has been demonstrated. Language eng DOI 10.1016/S0022-0728(01)00649-0 Field of Research 100703 Nanobiotechnology Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©2001, Elsevier Science B.V. Persistent URL http://hdl.handle.net/10536/DRO/DU:30034977 Document type: Journal Article Collection: Institute for Technology Research and Innovation Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Mon, 30 May 2011, 10:55:34 EST Mon, 12 Sep 2011, 15:27:41 EST Mon, 12 Sep 2011, 15:28:39 EST Filtered Full Citation counts:   Cited 191 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 260 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Mon, 30 May 2011, 10:55:34 EST

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