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.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education Malaysia: High Impact Research MoEGrant UM.C/625/1/HIR/MoE/SC/04, PRGS grant PR002-2014A, FP039 2016 |
| Uncontrolled Keywords: | Composite materials; Nanostructure; Electroactive polymer; Uric acid sensor |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 17 Jan 2019 03:07 |
| Last Modified: | 17 Jan 2019 03:07 |
| URI: | http://eprints.um.edu.my/id/eprint/20034 |
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