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Photochemical Deposition of Co-Ac Catalyst on ZnO Nanorods for Solar Water Oxidation

Irshad, Ahamed and Munichandraiah, N (2015) Photochemical Deposition of Co-Ac Catalyst on ZnO Nanorods for Solar Water Oxidation. In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 162 (4). H235-H243.

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Official URL: http://dx.doi.org/10.1149/2.0531504jes

Abstract

The preparation of ZnO nanorod films decorated with cobalt-acetate (CoAc) electrocatalyst and its activity for photoelectrolysis of water have been demonstrated. The photochemically prepared CoAc catalyst is chemically and morphologically similar to the electrochemically prepared CoAc catalyst. The on-set potential of oxygen evolution reaction is lower on CoAc-ZnO photoanode in relation to bare ZnO photoanode. There is a three to four fold increase in photooxidation current of OER due to the presence of CoAc co-catalyst on ZnO. Thus, the photochemically prepared CoAc on ZnO is an alternative and efficient co-catalyst for photoelectrochemical oxygen evolution reaction. The enhancement in photocatalytic activity of ZnO by the CoAc catalyst photochemically deposited from acetate buffer solution is significantly greater than the cobalt-phosphate (CoPi) co-catalyst deposited from phosphate buffer solution. (C) The Author(s) 2015. Published by ECS. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELECTROCHEMICAL SOC INC, 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
Keywords: OXYGEN-EVOLVING CATALYST; EVOLUTION CATALYSTS; HYDROGEN-PRODUCTION; OXIDE; ELECTRODEPOSITION; PHOTOANODES; PHOSPHATE; BIVO4; FILMS; PHOTOELECTRODES
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 20 Apr 2015 07:44
Last Modified: 06 May 2015 09:24
URI: http://eprints.iisc.ac.in/id/eprint/51267

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