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Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
Published on: October 18, 2018
Electro-oxidative determination of aromatic amine (o-phenylenediamine) using organic-inorganic hybrid composite
Ragu Sasikumar1, Palraj Ranganathan2, Shen-Ming Chen1
1Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
Abstract:
A highly sensitive o-phenylenediamine (OPD) sensor based on a Fe3O4 doped with functionalized multi-walled carbon nanotubes (Fe3O4@f-MWCNTs) composite fabricated glassy carbon electrode (GCE) was developed. The modified Fe3O4@f-MWCNTs/GCE showed an enhanced current (Ipa) response toward OPD relative to that of a Fe3O4/GCE, f-MWCNTs/GCE, and a bare GCE. Under optimum conditions, the Fe3O4@f-MWCNTs/GCE showed a wide linear range remove at OPD concentrations of 0.6-80µM. The limit of detection and sensitivity of the f-MWCNTs/GCE, Fe3O4/GCE sensor were found to be 50µM, and 2.8002mAmM-1cm-2, respectively. The developed sensor showed excellent accumulation time, good repeatability, and operational stability. The obtained results suggest that the development of composite could be an effective electro-catalyst and it can play a vital role in biomedical, pharmaceutical, and hazardous free environmental applications.
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