Electrochemical oxidation determination and voltammetric behaviour of 4-nitrophenol based on Cu2O nanoparticles modified glassy carbon electrode |
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| Authors: | Huanshun Yin Yunlei Zhou Qiang Ma Linan Lu |
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| Institution: | 1. College of Chemistry and Material Science, Shandong Agricultural University , Taian , 271018, Shandong , PR China;2. College of Resources and Environment, Shandong Agricultural University , Taian , 271018, Shandong , PR China;3. College of Life Science, Beijing Normal University , 100875, Beijing , China;4. College of Chemistry and Material Science, Shandong Agricultural University , Taian , 271018, Shandong , PR China;5. School of Chemistry and Chemical Engineering, Liaoning Normal University , Dalian , 116029, Liaoning , PR China |
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| Abstract: | 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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| Keywords: | Cu2O nanoparticles 4-Nitrophenol electrochemical oxidation determination glassy carbon electrode |
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