Modified interdigitated arrays by novel poly(1,8-diaminonaphthalene)/carbon nanotubes composite for selective detection of mercury(II)

Dzung Tuan Nguyen; Lam Dai Tran; Huy Le Nguyen; Binh Hai Nguyen; Nguyen Van Hieu

doi:10.1016/j.talanta.2011.07.094

Modified interdigitated arrays by novel poly(1,8-diaminonaphthalene)/carbon nanotubes composite for selective detection of mercury(II)

Talanta. 2011 Oct 15;85(5):2445-50. doi: 10.1016/j.talanta.2011.07.094. Epub 2011 Aug 5.

Authors

Dzung Tuan Nguyen¹, Lam Dai Tran, Huy Le Nguyen, Binh Hai Nguyen, Nguyen Van Hieu

Affiliation

¹ Institute of Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Viet Nam.

PMID: 21962666
DOI: 10.1016/j.talanta.2011.07.094

Abstract

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.