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 1.0×10-8to 8.0×10-5mol/L for an accumulation time of 200 s, correlation coefficient r = 0.9980. The detection limit is as low as 5.0×10-9mol/L. The high sensitivity, selectivity, and stability of the PVA/c-MWNT film demonstrated its practical application.
Publisher
Trans Tech Publications, Ltd.
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