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Electrochemical synthesis of WO3/PANI composite for electrocatalytic reduction of iodate |
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| Authors: | Ben-Xue Zou Xiao-Xia Liu Dermot Diamond |
| Affiliation: | a China-Ireland Center for Advanced Materials and Sensor Development, Department of Chemistry, Northeastern University, Shenyang, 110004, China b Department of Chemical engineering, Liaodong University, Dandong, 118003, China c National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland |
| Abstract: | Composite film of polyaniline (PANI) and tungsten oxide (WO3) was electrodeposited by cyclic voltammetric technique from a solution of aniline and tungstic acid. The obtained WO3/PANI film displayed a significant enhancement of electrocatalytic activity for iodate reduction and a better stability than that of pure WO3 and PANI films. Result of amperometric experiment revealed a good linear relationship with concentration of IO3− from 20 to 500 μM, with a high sensitivity of 0.54 μA/μM and a detection limit of 2.7 μM for the determination of iodate. This composite film was also successfully applied in determination of iodate in commercial table salt. |
| Keywords: | Tungsten oxide Polyaniline Electro-co-deposition Electrocatalytic reduction Iodate |
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