Voltammetric Determination of 4-Nitrophenol at Graphite Nanoflakes Modified Glassy Carbon Electrode
Voltammetric determination of 4-nitrophenol (4-NP) has been carried out on graphite nanoflakes (GNFs) modified glassy carbon electrode (GCE) (GNFs/GCE). The GNFs were easily prepared by paired electrolysis of graphite rods in a blank solution of NaOH. In comparison with GCE, the GNFs/GCE showed high...
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Published in | Journal of the Electrochemical Society Vol. 162; no. 1; pp. H72 - H78 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
The Electrochemical Society
01.01.2015
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Online Access | Get full text |
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Summary: | Voltammetric determination of 4-nitrophenol (4-NP) has been carried out on graphite nanoflakes (GNFs) modified glassy carbon electrode (GCE) (GNFs/GCE). The GNFs were easily prepared by paired electrolysis of graphite rods in a blank solution of NaOH. In comparison with GCE, the GNFs/GCE showed higher electrocatalytic activity (positive shift of peak potential and onset potential) toward the 4-NP reduction. Under the optimized conditions, the oxidation peak currents varied linearly with a concentration range for 4-NP of 1−6000 μM (over three consecutive calibration curves) with a detection limit of 0.7 μM (3 σ/slope) and quantification limit of 2.3 μM (10 σ/slope). The proposed method exhibited several advantages including easy fabrication, low cost, good sensitivity, high stability, good reproducibility, high selectivity and very broad linear range, and was successfully applied to detect 4-NP in water samples with satisfied results. |
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Bibliography: | 0991501JES |
ISSN: | 0013-4651 1945-7111 |
DOI: | 10.1149/2.0991501jes |