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

作者：Dzung Tuan Nguyen; Lam Dai Tran^*; Huy Le Nguyen; Binh Hai Nguyen; Nguyen Van Hieu

来源：Talanta, 2011, 85(5): 2445-2450.

DOI：10.1016/j.talanta.2011.07.094

• Poly(1.8-diaminonaphthalene) (PDAN)
• Functionalized multi-walled carbon nanotubes (CNT)
• Interdigitated arrays (IDA)
• Square wave voltammetry (SWV)
• Mercury selective detection

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.

• 出版日期2011-10-15