Journal
TALANTA
Volume 85, Issue 5, Pages 2445-2450Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2011.07.094
Keywords
Poly(1.8-diaminonaphthalene) (PDAN); Functionalized multi-walled carbon nanotubes (CNT); Interdigitated arrays (IDA); Square wave voltammetry (SWV); Mercury selective detection
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Funding
- Viet Nam National Foundation [104.03-2010.60]
- Department of International Cooperation, VAST
- University of Paris Diderot, France (VAST- CNRS)
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This study describes a novel type of interdigitated arrays (IDA), microfabricated by electropolymerizing structured Poly(1,8-diaminonaphthalene)/functionalized multi-walled carbon nanotubes (PDAN/CNT) thin film onto a silicon chip for square wave voltammetry (SWV) multi-element heavy metal ion detection. The structure of PDAN/CNT was characterized by Raman, FE-SEM and AFM techniques. Analysed experiments reveal that the uptake of Hg(2+) by PDAN/CNT is quite specific and it can be used advantageously for electrochemical sensing of Hg(2+) thanks to original feature of (Hg(2+)/Hg(2)(2+)) redox potential with the respect to that of PDAN/CNT. As-developed IDA type electrode can extend its utility in other sensing applications. (C) 2011 Elsevier B.V. All rights reserved.
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