Issue 6, 2013

Enhancing selectivity in stripping voltammetry by different adsorption behaviors: the use of nanostructured Mg–Al-layered double hydroxides to detect Cd(ii)

Abstract

We report the use of nanostructured layered double hydroxides (LDHs) for the highly selective and sensitive detection of Cd2+ using anodic stripping voltammetry (ASV). In particular, the modification of a glassy carbon electrode promotes the sensitivity and selectivity towards Cd2+ in the presence of Pb2+, Hg2+, Cu2+ and Zn2+. The electrochemical characterization and anodic stripping voltammetric performance of Cd2+ were evaluated using cyclic voltammetry (CV) and square wave anodic stripping voltammetry (SWASV) analysis. Operational parameters, including supporting electrolytes, pH value, deposition potential and deposition time were optimized. In addition, the selectivity, interference and stability were also investigated under the optimized conditions. The results showed that the fabricated electrode possessed good selectivity, stability and reproducibility. The proposed electrochemical sensing strategy is thus expected to open new opportunities to broaden the use of ASV in analysis for detecting heavy metal ions in the environment.

Graphical abstract: Enhancing selectivity in stripping voltammetry by different adsorption behaviors: the use of nanostructured Mg–Al-layered double hydroxides to detect Cd(ii)

Article information

Article type
Paper
Submitted
07 Sep 2012
Accepted
24 Jan 2013
First published
24 Jan 2013

Analyst, 2013,138, 1812-1818

Enhancing selectivity in stripping voltammetry by different adsorption behaviors: the use of nanostructured Mg–Al-layered double hydroxides to detect Cd(II)

R. Xu, X. Yu, C. Gao, J. Liu, R. G. Compton and X. Huang, Analyst, 2013, 138, 1812 DOI: 10.1039/C3AN36271J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements