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Synthesis and characterization of α-Fe2O3/polyaniline nanotube composite as electrochemical sensor for uric acid detection
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mahmoudian, Mohammad Reza Basirun, Wan Jefrey Sookhakian, Mehran Woi, Pei Meng Zalnezhad, Erfan Hazarkhani, Hasan Alias, Yatimah |
| Copyright Year | 2019 |
| Abstract | 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. |
| Starting Page | 384 |
| Ending Page | 392 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.apt.2018.11.015 |
| Volume Number | 30 |
| Alternate Webpage(s) | https://umexpert.um.edu.my/public_view.php?row=ODE2MTk%3D&type=publication |
| Alternate Webpage(s) | https://doi.org/10.1016/j.apt.2018.11.015 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
