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The Use of Ni/Sb-SnO2-based Membrane Electrode Assembly for Electrochemical Generation of Ozone and the Decolourisation of Reactive Blue 50 Dye Solutions

Lookup NU author(s): Dr Khalid Zakaria, Professor Paul ChristensenORCiD

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).

Abstract

Electrochemical ozone generation with ozone current efficiencies up to 33% and power consumption as low as 25 kWh kg(-1) O-3 at room temperature using Ni/Sb-SnO2 anodes in a membrane electrode assembly (MEA) based cell with platinised titanium cathodes separated by Nafion membrane is reported. The complete decolourisation of 200 cm(3) of 1000 mg dm(-3) Reactive Blue 50 (RB50) dye within 8 minutes at 2.7V with 100% current efficiency for the first 5 minutes and specific power consumption as low as ca. 8 kWh kg(COD)(-1) using the MEA-based cell is also described. The byproducts of the dye oxidation were investigated and the formation of various organic acids confirmed. (C) 2014 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Zakaria K, Christensen PA

Publication type: Article

Publication status: Published

Journal: Electrochimica Acta

Year: 2014

Volume: 135

Pages: 11-18

Print publication date: 20/07/2014

Online publication date: 14/05/2014

Acceptance date: 03/05/2014

Date deposited: 03/10/2014

ISSN (print): 0013-4686

ISSN (electronic): 1873-3859

Publisher: Pergamon Press

URL: http://dx.doi.org/10.1016/j.electacta.2014.05.013

DOI: 10.1016/j.electacta.2014.05.013

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