Electrochemical Detection of Persulfate at the Modified Glassy Carbon Electrode with Nanocomposite Containing Nano‐Ruthenium Oxide/Thionine and Nano‐Ruthenium Oxide/Celestine Blue. Issue 8 (24th June 2014)

• Record Type: Journal Article
• Authors: Roushani, Mahmoud; Karami, Elham
• Is Part Of: Electroanalysis. Volume 26:Issue 8(2014:Aug.)
• Page Start: 1761
• Page End: 1772
• Publication Date: 2014-06-24
• Subjects: Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201400125
• Languages: English
• ISSNs: 1040-0397

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The present study describes the fabrication of a sensitive amperometric sensor for the determination of persulfate. The immobilization surface was prepared by modifying a glassy carbon (GC) electrode with a nanocomposite containing ruthenium oxide (RuOx) nanoparticles and thionine (TH) or celestin blue (CB). The modified electrodes indicated excellent electrocatalytic activity toward persulfate reduction at a potential of +0.1 V. The proposed sensor showed detection limits of 1.46 µM for the GC/RuOx/TH modified electrode and 2.64 µM for the GC/RuOx/CB modified electrode. The sensitivities were obtained as 3 nA µM⁻¹ at a concentration range of 10 µM to 11 mM for the GC/RuOx/TH modified electrode and 1 nA µM⁻¹ at a concentration range of 10 µM to 6 mM for the GC/RuOx/CB modified electrodes.</p> </abstract>