Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection
We report the synthesis of α-Fe2O3/polyaniline nanotube (PAn NTs) composite as an electrochemical sensor for uric acid (UA) detection. Field emission scanning electron microscopy (FESEM) indicates a hexagonal shape of the α-Fe2O3 while a nanotube morphology of the PAn. Impedance spectroscopy results...
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| Format: | Article |
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Elsevier
2019
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| author | Mahmoudian, Mohammad Reza Basirun, Wan Jefrey Sookhakian, Mehran Woi, Pei Meng Zalnezhad, Erfan Hazarkhani, Hassan Alias, Yatimah |
| author_facet | Mahmoudian, Mohammad Reza Basirun, Wan Jefrey Sookhakian, Mehran Woi, Pei Meng Zalnezhad, Erfan Hazarkhani, Hassan Alias, Yatimah |
| author_sort | Mahmoudian, Mohammad Reza |
| collection | UM |
| description | We report the synthesis of α-Fe2O3/polyaniline nanotube (PAn NTs) composite as an electrochemical sensor for uric acid (UA) detection. Field emission scanning electron microscopy (FESEM) indicates a hexagonal shape of the α-Fe2O3 while a nanotube morphology of the PAn. Impedance spectroscopy results confirm a significant decrease in the charge transfer resistance of the glassy carbon electrode (GCE) modified with α-Fe2O3/PAn NTs due to the presence of PAn NTs. The results show that the increase in the conductivity of α-Fe2O3 in the presence of PAnNTs could improve the catalytic performance of α-Fe2O3/PAn NTs composite, compared to the pure α-Fe2O3 nanoparticles. From differential pulse voltammetry, a linear working range for the concentration of UA between 0.01 µM and 5 µM, with a LOD of 0.038 µM (S/N = 3) was obtained. The sensitivity of the linear segment is 0.433 μA µM−1. The reliability of the modified electrode towards the detection of UA was investigated in the presence of interfering acids such as ascorbic acid, citric acid and succinic acid. |
| first_indexed | 2024-03-06T05:50:00Z |
| format | Article |
| id | um.eprints-20034 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:50:00Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-200342019-01-17T03:07:16Z http://eprints.um.edu.my/20034/ Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection Mahmoudian, Mohammad Reza Basirun, Wan Jefrey Sookhakian, Mehran Woi, Pei Meng Zalnezhad, Erfan Hazarkhani, Hassan Alias, Yatimah Q Science (General) QD Chemistry We report the synthesis of α-Fe2O3/polyaniline nanotube (PAn NTs) composite as an electrochemical sensor for uric acid (UA) detection. Field emission scanning electron microscopy (FESEM) indicates a hexagonal shape of the α-Fe2O3 while a nanotube morphology of the PAn. Impedance spectroscopy results confirm a significant decrease in the charge transfer resistance of the glassy carbon electrode (GCE) modified with α-Fe2O3/PAn NTs due to the presence of PAn NTs. The results show that the increase in the conductivity of α-Fe2O3 in the presence of PAnNTs could improve the catalytic performance of α-Fe2O3/PAn NTs composite, compared to the pure α-Fe2O3 nanoparticles. From differential pulse voltammetry, a linear working range for the concentration of UA between 0.01 µM and 5 µM, with a LOD of 0.038 µM (S/N = 3) was obtained. The sensitivity of the linear segment is 0.433 μA µM−1. The reliability of the modified electrode towards the detection of UA was investigated in the presence of interfering acids such as ascorbic acid, citric acid and succinic acid. Elsevier 2019 Article PeerReviewed Mahmoudian, Mohammad Reza and Basirun, Wan Jefrey and Sookhakian, Mehran and Woi, Pei Meng and Zalnezhad, Erfan and Hazarkhani, Hassan and Alias, Yatimah (2019) Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection. Advanced Powder Technology, 30 (2). pp. 384-392. ISSN 0921-8831, DOI https://doi.org/10.1016/j.apt.2018.11.015 <https://doi.org/10.1016/j.apt.2018.11.015>. https://doi.org/10.1016/j.apt.2018.11.015 doi:10.1016/j.apt.2018.11.015 |
| spellingShingle | Q Science (General) QD Chemistry Mahmoudian, Mohammad Reza Basirun, Wan Jefrey Sookhakian, Mehran Woi, Pei Meng Zalnezhad, Erfan Hazarkhani, Hassan Alias, Yatimah Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection |
| title | Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection |
| title_full | Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection |
| title_fullStr | Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection |
| title_full_unstemmed | Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection |
| title_short | Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection |
| title_sort | synthesis and characterization of α fe2o3 polyaniline nanotube composite as electrochemical sensor for uric acid detection |
| topic | Q Science (General) QD Chemistry |
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