Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon Electrode
A poly(aniline-co-m-ferrocenylaniline) was successfully synthesized on a glassy carbon electrode (GCE) by electrochemical copolymerization using a scan potential range from −0.3 to +0.9 V (vs. Ag/AgCl) in 0.5 M H2SO4 containing 30% acetonitrile (ACN), 0.1 M aniline (Ani) and 0.005 M m-ferrocenyanili...
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| Format: | Article |
| Language: | English |
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MDPI AG
2011-10-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/11/11/10166/ |
| _version_ | 1818040290422816768 |
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| author | Ekasith Somsook Maliwan Amatatongchai Sanoe Chairam Worawit Sriraksa |
| author_facet | Ekasith Somsook Maliwan Amatatongchai Sanoe Chairam Worawit Sriraksa |
| author_sort | Ekasith Somsook |
| collection | DOAJ |
| description | A poly(aniline-co-m-ferrocenylaniline) was successfully synthesized on a glassy carbon electrode (GCE) by electrochemical copolymerization using a scan potential range from −0.3 to +0.9 V (vs. Ag/AgCl) in 0.5 M H2SO4 containing 30% acetonitrile (ACN), 0.1 M aniline (Ani) and 0.005 M m-ferrocenyaniline (m-FcAni). The field emission scanning electron microscope (FESEM) and electrochemical methods were used to characterize the poly(Ani-co-m-FcAni) modified electrode. The poly(Ani-co-m-FcAni)/GCE exhibited excellent electrocatalytic oxidation of ascorbic acid (AA) in citrate buffer solution (CBS, pH 5.0). The anodic peak potential of AA was shifted from +0.55 V at the bare GCE to +0.25 V at the poly(Ani-co-m-FcAni)/GCE with higher current responses than those seen on the bare GCE. The scan number at the 10th cycle was selected as the maximum scan cycle in electrochemical polymerization. The limit of detection (LOD) was estimated to be 2.0 mM based on the signal-to-noise ratio (S/N = 3). The amperometric responses demonstrated an excellent selectivity for AA determination over glucose (Glu) and dopamine (DA). |
| first_indexed | 2024-12-10T08:12:11Z |
| format | Article |
| id | doaj.art-30661ce75635466d91f1881bf27549e9 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T08:12:11Z |
| publishDate | 2011-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-30661ce75635466d91f1881bf27549e92022-12-22T01:56:32ZengMDPI AGSensors1424-82202011-10-011111101661017910.3390/s111110166Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon ElectrodeEkasith SomsookMaliwan AmatatongchaiSanoe ChairamWorawit SriraksaA poly(aniline-co-m-ferrocenylaniline) was successfully synthesized on a glassy carbon electrode (GCE) by electrochemical copolymerization using a scan potential range from −0.3 to +0.9 V (vs. Ag/AgCl) in 0.5 M H2SO4 containing 30% acetonitrile (ACN), 0.1 M aniline (Ani) and 0.005 M m-ferrocenyaniline (m-FcAni). The field emission scanning electron microscope (FESEM) and electrochemical methods were used to characterize the poly(Ani-co-m-FcAni) modified electrode. The poly(Ani-co-m-FcAni)/GCE exhibited excellent electrocatalytic oxidation of ascorbic acid (AA) in citrate buffer solution (CBS, pH 5.0). The anodic peak potential of AA was shifted from +0.55 V at the bare GCE to +0.25 V at the poly(Ani-co-m-FcAni)/GCE with higher current responses than those seen on the bare GCE. The scan number at the 10th cycle was selected as the maximum scan cycle in electrochemical polymerization. The limit of detection (LOD) was estimated to be 2.0 mM based on the signal-to-noise ratio (S/N = 3). The amperometric responses demonstrated an excellent selectivity for AA determination over glucose (Glu) and dopamine (DA).http://www.mdpi.com/1424-8220/11/11/10166/electrochemical copolymerizationpoly(aniline-co-m-ferrocenylaniline)electrocatalytic oxidationascorbic acid (AA) |
| spellingShingle | Ekasith Somsook Maliwan Amatatongchai Sanoe Chairam Worawit Sriraksa Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon Electrode Sensors electrochemical copolymerization poly(aniline-co-m-ferrocenylaniline) electrocatalytic oxidation ascorbic acid (AA) |
| title | Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon Electrode |
| title_full | Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon Electrode |
| title_fullStr | Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon Electrode |
| title_full_unstemmed | Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon Electrode |
| title_short | Electrocatalytic Oxidation of Ascorbic Acid Using a Poly(aniline-co-m-ferrocenylaniline) Modified Glassy Carbon Electrode |
| title_sort | electrocatalytic oxidation of ascorbic acid using a poly aniline co m ferrocenylaniline modified glassy carbon electrode |
| topic | electrochemical copolymerization poly(aniline-co-m-ferrocenylaniline) electrocatalytic oxidation ascorbic acid (AA) |
| url | http://www.mdpi.com/1424-8220/11/11/10166/ |
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