Electrochemical oxidation determination and voltammetric behaviour of 4-nitrophenol based on Cu2O nanoparticles modified glassy carbon electrode
Cu2O nanoparticles (nano-Cu2O) modified glassy carbon electrode (GCE) was fabricated and used to investigate the electrochemical behaviour of 4-nitrophenol (4-NP) by cyclic voltammetry (CV), chronoamperometry (CA), chronocoulometry (CC) and differential pulse voltammetry
(DPV). Compared with GCE, a remarkable increase in oxidation peak current was observed. It indicates that nano-Cu2O exhibits remarkable enhancement effect on the electrochemical oxidation of 4-NP. Under the optimised experimental conditions, the oxidation peak currents were propotional
to 4-NP concentration in the range from 1.0 × 10−6 to 4.0 × 10−4 mol L−1 with a detection limit of 5.0 × 10−7 mol L−1
(S/N = 3). The fabricated electrode presented good repeatability, stability and anti-interference. Finally, the proposed method was applied to determine 4-NP in water samples. The recoveries for these samples were from 94.60% to 105.5%.
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glassy carbon electrode
Document Type: Research Article
College of Chemistry and Material Science, Shandong Agricultural University, Taian,271018, Shandong, PR China
College of Life Science, Beijing Normal University, 100875Beijing, China
College of Resources and Environment, Shandong Agricultural University, Taian,271018, Shandong, PR China
School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian,116029, Liaoning, PR China
May 15, 2012
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