Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine Detection
A hybrid polynuclear nickel hexacyanoferrate (NiHCFe)/graphitized mesoporous carbon- (GMC-) modified glassy carbon electrode (GCE/NiHCFe@GMC) has been prepared by a sequential method using electrodeposited Ni on a GMC-modified glassy carbon electrode (GCE/Ni@GMC) as a template and [Fe(CN)6]3− as an...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.4061/2011/386023 |
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| author | Palani Barathi Annamalai Senthil Kumar Minnal Ranjan Babu Karthick |
| author_facet | Palani Barathi Annamalai Senthil Kumar Minnal Ranjan Babu Karthick |
| author_sort | Palani Barathi |
| collection | DOAJ |
| description | A hybrid polynuclear nickel hexacyanoferrate (NiHCFe)/graphitized mesoporous carbon- (GMC-) modified glassy carbon electrode (GCE/NiHCFe@GMC) has been prepared by a sequential method using electrodeposited Ni on a GMC-modified glassy carbon electrode (GCE/Ni@GMC) as a template and [Fe(CN)6]3− as an in-situ chemical precipitant, without any additional interlinking agent. Physicochemical and electrochemical characterizations reveal the presence of NiHCFe units within the porous sites of the GMC. The GCE/NiHCFe@GMC electrode showed highly stable and well-defined redox behaviors with surface-confined electron-transfer mechanism in a pH 7 phosphate buffer solution. The GCE/NiHCFe@GMC showed about 20 times enhancement in hydrazine oxidation peak current along with 500 mV reduction in overpotential over the corresponding unmodified GCE/GMC. Hydrazine calibration plots by CV and amperometric i-t methods were linear up to 1 mM and 220 μM with current sensitivity values of 15.86 μA/mM and 7.37 nA/μM, respectively. Calculated detection limit by the amperometric i-t method was 23.2 nM. The hybrid GCE/NiHCFe@GMC exhibits remarkable tolerance to important industrial and biological interferents. Finally determination of hydrazine in cigarette smoke sample was successfully demonstrated. |
| format | Article |
| id | doaj-art-ea0a112dbacd473dbc51e974932a562b |
| institution | OA Journals |
| issn | 2090-3537 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-ea0a112dbacd473dbc51e974932a562b2025-08-20T02:21:57ZengWileyInternational Journal of Electrochemistry2090-35372011-01-01201110.4061/2011/386023386023Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine DetectionPalani Barathi0Annamalai Senthil Kumar1Minnal Ranjan Babu Karthick2Environmental and Analytical Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632 014, IndiaEnvironmental and Analytical Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632 014, IndiaSensor Systems Technology Division, School of Electronics and Engineering, Vellore Institute of Technology, Vellore 632 014, IndiaA hybrid polynuclear nickel hexacyanoferrate (NiHCFe)/graphitized mesoporous carbon- (GMC-) modified glassy carbon electrode (GCE/NiHCFe@GMC) has been prepared by a sequential method using electrodeposited Ni on a GMC-modified glassy carbon electrode (GCE/Ni@GMC) as a template and [Fe(CN)6]3− as an in-situ chemical precipitant, without any additional interlinking agent. Physicochemical and electrochemical characterizations reveal the presence of NiHCFe units within the porous sites of the GMC. The GCE/NiHCFe@GMC electrode showed highly stable and well-defined redox behaviors with surface-confined electron-transfer mechanism in a pH 7 phosphate buffer solution. The GCE/NiHCFe@GMC showed about 20 times enhancement in hydrazine oxidation peak current along with 500 mV reduction in overpotential over the corresponding unmodified GCE/GMC. Hydrazine calibration plots by CV and amperometric i-t methods were linear up to 1 mM and 220 μM with current sensitivity values of 15.86 μA/mM and 7.37 nA/μM, respectively. Calculated detection limit by the amperometric i-t method was 23.2 nM. The hybrid GCE/NiHCFe@GMC exhibits remarkable tolerance to important industrial and biological interferents. Finally determination of hydrazine in cigarette smoke sample was successfully demonstrated.http://dx.doi.org/10.4061/2011/386023 |
| spellingShingle | Palani Barathi Annamalai Senthil Kumar Minnal Ranjan Babu Karthick Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine Detection International Journal of Electrochemistry |
| title | Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine Detection |
| title_full | Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine Detection |
| title_fullStr | Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine Detection |
| title_full_unstemmed | Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine Detection |
| title_short | Polynuclear Nickel Hexacyanoferrate/Graphitized Mesoporous Carbon Hybrid Chemically Modified Electrode for Selective Hydrazine Detection |
| title_sort | polynuclear nickel hexacyanoferrate graphitized mesoporous carbon hybrid chemically modified electrode for selective hydrazine detection |
| url | http://dx.doi.org/10.4061/2011/386023 |
| work_keys_str_mv | AT palanibarathi polynuclearnickelhexacyanoferrategraphitizedmesoporouscarbonhybridchemicallymodifiedelectrodeforselectivehydrazinedetection AT annamalaisenthilkumar polynuclearnickelhexacyanoferrategraphitizedmesoporouscarbonhybridchemicallymodifiedelectrodeforselectivehydrazinedetection AT minnalranjanbabukarthick polynuclearnickelhexacyanoferrategraphitizedmesoporouscarbonhybridchemicallymodifiedelectrodeforselectivehydrazinedetection |