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A Novel Sensor of Poly(Vinyl Alcohol) Incorporated Multi-Walled Carbon Nanotubes for Voltammetric Determination of Cu (II)

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Abstract:

An electrochemical sensor for the detection of Cu (II) ion is described by using poly (vinyl alcohol) (PVA) and carboxylic multi-walled carbon nanotubes (c-MWNT) modified glassy carbon electrode (GCE) by anodic stripping voltammetry (ASV). PVA/c-MWNT film greatly improves the sensitivity of determining Cu (II). The striping peak currents change linearly with the concentration of Cu (II) from 1.0×10-8 to 8.0×10-5 mol/L for an accumulation time of 200 s, correlation coefficient r = 0.9980. The detection limit is as low as 5.0×10-9 mol/L. The high sensitivity, selectivity, and stability of the PVA/c-MWNT film demonstrated its practical application.

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Periodical:

Advanced Materials Research (Volume 600)

Pages:

124-127

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.600.124

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Online since:

November 2012

Authors:

De Ling Chi, Kai Zhao, Fei Fei Zhang, Zong Hua Wang

Keywords:

Anodic Stripping Voltammetry, C-MWNT, Cu(II), PVA

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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