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Modified interdigitated arrays by novel poly(1,8-diaminonaphthalene)/carbon nanotubes composite for selective detection of mercury(II) |
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| Authors: | Nguyen Dzung Tuan Tran Lam Dai Nguyen Huy Le Nguyen Binh Hai Hieu Nguyen Van |
| Affiliation: | a Institute of Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Viet Nam b Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Viet Nam c School of Chemical Engineering, Hanoi University of Science and Technology, 1, Dai Co Viet Road, Hanoi, Viet Nam d International Training Institute for Materials Science, Hanoi University of Science and Technology, 1, Dai Co Viet Road, Hanoi, Viet Nam |
| 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 Hg2+ by PDAN/CNT is quite specific and it can be used advantageously for electrochemical sensing of Hg2+ thanks to original feature of (Hg2+/Hg22+) redox potential with the respect to that of PDAN/CNT. As-developed IDA type electrode can extend its utility in other sensing applications. |
| 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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