Electrochemical Oxidation of Hazardous Tetracene to Highly Redox Active Anthraquinone and Hydroquinone Derivatives on a Carbon Nanotube‐Modified Electrode and Its Selective Hydrogen Peroxide Sensing. Issue 11 (12th August 2014)

• Record Type: Journal Article
• Authors: Barathi, Palani; Kumar, Annamalai Senthil; Aggarwal, Suresh K.
• Is Part Of: Electroanalysis. Volume 26:Issue 11(2014:Nov.)
• Page Start: 2342
• Page End: 2349
• Publication Date: 2014-08-12
• Subjects: Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201400250
• Languages: English
• ISSNs: 1040-0397

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A simple method for electrochemical oxidation and degradation of carcinogenic tetracene (TC) to surface confined redox active quinone species (TCO) on a pristine‐multiwalled carbon nanotube modified (MWCNT) gold electrode surface (Au/MWCNT) by applying a static potential at 0.9 V vs. Ag/AgCl in pH 7 phosphate buffer solution has been demonstrated. Various physicochemical characterizations of MWCNT@TCO by TEM, FT‐IR, Raman spectroscopy and GC‐MS reveal the presence of two types of redox sites, hydroquinone and anthraquinone derivatives within the MWCNT@TCO. The modified electrode showed selective electrocatalytic reduction and amperometric <italic>i</italic>–<italic>t</italic> sensing of H₂O₂ with a detection limit (signal‐to‐noise=3) of 122 nM.</p> </abstract>