Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid
We report on the synthesis and characterization of activated carbon-ethylenediamine–cobalt(II) tetracarboxyphthalocyanine conjugate (AC–CONHCH2 CH2NH2–CoPc) and its electrocatalytic behavior for oxidation of ascorbic acid. Ultraviolet–visible (UV–Vis), Fourier-transform infrared (FTIR), and electroc...
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| Format: | Article |
| Language: | English |
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Springer Science
2016
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| Online Access: | http://hdl.handle.net/11408/1624 |
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| author | Moyo, Pamela Mugadza, Tawanda Mehlana, Gift Guyo, Upenyu |
| author_facet | Moyo, Pamela Mugadza, Tawanda Mehlana, Gift Guyo, Upenyu |
| author_sort | Moyo, Pamela |
| collection | DSpace |
| description | We report on the synthesis and characterization of activated carbon-ethylenediamine–cobalt(II) tetracarboxyphthalocyanine conjugate (AC–CONHCH2 CH2NH2–CoPc) and its electrocatalytic behavior for oxidation of ascorbic acid. Ultraviolet–visible (UV–Vis), Fourier-transform infrared (FTIR), and electrochemical impedance spectroscopies, and cyclic and square-wave voltammetry were used to characterize the electrode modifiers and modified glassy carbon electrode. The limit of detection was found to be 0.26 lm using 3d notation. The linear dynamic range was from 1.5 9 10-4 to 1 9 10-2 M with electrode sensitivity of 0.01 A mol-1 L cm-2. A Tafel slope of 200.8 mV decade-1 was found. The concentration of ascorbic acid in the tablet was 0.034 M. Oxalic acid showed no interference in ascorbic acid determination. |
| format | Article |
| id | ir-11408-1624 |
| institution | My University |
| language | English |
| publishDate | 2016 |
| publisher | Springer Science |
| record_format | dspace |
| spelling | ir-11408-16242022-06-27T13:49:06Z Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid Moyo, Pamela Mugadza, Tawanda Mehlana, Gift Guyo, Upenyu Ascorbic acid, Voltammetry, Phthalocyanine, Glassy carbon electrode We report on the synthesis and characterization of activated carbon-ethylenediamine–cobalt(II) tetracarboxyphthalocyanine conjugate (AC–CONHCH2 CH2NH2–CoPc) and its electrocatalytic behavior for oxidation of ascorbic acid. Ultraviolet–visible (UV–Vis), Fourier-transform infrared (FTIR), and electrochemical impedance spectroscopies, and cyclic and square-wave voltammetry were used to characterize the electrode modifiers and modified glassy carbon electrode. The limit of detection was found to be 0.26 lm using 3d notation. The linear dynamic range was from 1.5 9 10-4 to 1 9 10-2 M with electrode sensitivity of 0.01 A mol-1 L cm-2. A Tafel slope of 200.8 mV decade-1 was found. The concentration of ascorbic acid in the tablet was 0.034 M. Oxalic acid showed no interference in ascorbic acid determination. 2016-06-23T11:48:11Z 2016-06-23T11:48:11Z 2016 Article 0922-6168 10.1007/s11164-016-2477-z http://hdl.handle.net/11408/1624 en Research on Chemical Intermediates;Vol. 42, No. 1 open Springer Science |
| spellingShingle | Ascorbic acid, Voltammetry, Phthalocyanine, Glassy carbon electrode Moyo, Pamela Mugadza, Tawanda Mehlana, Gift Guyo, Upenyu Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid |
| title | Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid |
| title_full | Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid |
| title_fullStr | Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid |
| title_full_unstemmed | Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid |
| title_short | Synthesis and characterization of activated carbon–ethylenediamine-cobalt(II) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid |
| title_sort | synthesis and characterization of activated carbon–ethylenediamine-cobalt(ii) tetracarboxyphthalocyanine conjugate for catalytic oxidation of ascorbic acid |
| topic | Ascorbic acid, Voltammetry, Phthalocyanine, Glassy carbon electrode |
| url | http://hdl.handle.net/11408/1624 |
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