Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine
Hematite (α-Fe2O3) nanoparticles were synthesized by the solid transformation of ferrous hydroxide and ferrihydrite in hydrothermal condition. The as-prepared α-Fe2O3 nanoparticles were characterized by UV-vis, PL, XRD, Raman, TEM, AFM, FESEM, and EDX analysis. The experimental results indicated the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Hindawi Publishing Corporation
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37846/1/396135.pdf |
| _version_ | 1796973227916918784 |
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| author | Kamali, Khosro Zangeneh Alagarsamy, Pandikumar Huang, Nay Ming Ong, Boon Hoong Lim, Hong Ngee |
| author_facet | Kamali, Khosro Zangeneh Alagarsamy, Pandikumar Huang, Nay Ming Ong, Boon Hoong Lim, Hong Ngee |
| author_sort | Kamali, Khosro Zangeneh |
| collection | UPM |
| description | Hematite (α-Fe2O3) nanoparticles were synthesized by the solid transformation of ferrous hydroxide and ferrihydrite in hydrothermal condition. The as-prepared α-Fe2O3 nanoparticles were characterized by UV-vis, PL, XRD, Raman, TEM, AFM, FESEM, and EDX analysis. The experimental results indicated the formation of uniform hematite nanoparticles with an average size of 45 nm and perfect crystallinity. The electrochemical behavior of a GC/α-Fe2O3 electrode was studied using CV and EIS techniques with an electrochemical probe, [Fe(CN)6]3−/4− redox couple. The electrocatalytic activity was investigated toward DA oxidation in a phosphate buffer solution (pH 6.8) by varying different experimental parameters. The chronoamperometric study showed a linear response in the range of 0–2 μM with LoD of 1.6 μM for DA. Square wave voltammetry showed a linear response in the range of 0–35 μM with LoD of 236 nM for DA. |
| first_indexed | 2024-03-06T08:39:32Z |
| format | Article |
| id | upm.eprints-37846 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:39:32Z |
| publishDate | 2014 |
| publisher | Hindawi Publishing Corporation |
| record_format | dspace |
| spelling | upm.eprints-378462016-04-21T09:37:52Z http://psasir.upm.edu.my/id/eprint/37846/ Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine Kamali, Khosro Zangeneh Alagarsamy, Pandikumar Huang, Nay Ming Ong, Boon Hoong Lim, Hong Ngee Hematite (α-Fe2O3) nanoparticles were synthesized by the solid transformation of ferrous hydroxide and ferrihydrite in hydrothermal condition. The as-prepared α-Fe2O3 nanoparticles were characterized by UV-vis, PL, XRD, Raman, TEM, AFM, FESEM, and EDX analysis. The experimental results indicated the formation of uniform hematite nanoparticles with an average size of 45 nm and perfect crystallinity. The electrochemical behavior of a GC/α-Fe2O3 electrode was studied using CV and EIS techniques with an electrochemical probe, [Fe(CN)6]3−/4− redox couple. The electrocatalytic activity was investigated toward DA oxidation in a phosphate buffer solution (pH 6.8) by varying different experimental parameters. The chronoamperometric study showed a linear response in the range of 0–2 μM with LoD of 1.6 μM for DA. Square wave voltammetry showed a linear response in the range of 0–35 μM with LoD of 236 nM for DA. Hindawi Publishing Corporation 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37846/1/396135.pdf Kamali, Khosro Zangeneh and Alagarsamy, Pandikumar and Huang, Nay Ming and Ong, Boon Hoong and Lim, Hong Ngee (2014) Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine. The Scientific World Journal, 2014. art. no. 396135. pp. 1-13. ISSN 2356-6140; ESSN: 1537-744X http://www.hindawi.com/journals/tswj/2014/396135/abs/ 10.1155/2014/396135 |
| spellingShingle | Kamali, Khosro Zangeneh Alagarsamy, Pandikumar Huang, Nay Ming Ong, Boon Hoong Lim, Hong Ngee Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine |
| title | Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine |
| title_full | Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine |
| title_fullStr | Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine |
| title_full_unstemmed | Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine |
| title_short | Hematite nanoparticles-modified electrode based electrochemical sensing platform for dopamine |
| title_sort | hematite nanoparticles modified electrode based electrochemical sensing platform for dopamine |
| url | http://psasir.upm.edu.my/id/eprint/37846/1/396135.pdf |
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