Cobalt promoted TiO2/GO for the photocatalytic degradation of oxytetracycline and Congo Red


A family of titania derived nanocomposites synthesized via sol-gel and hydrothermal routes exhibit excellent performance for the photocatalytic degradation of two important exemplar water pollutants, oxytetracycline and Congo Red. Low loadings of Co3O4 nanoparticles dispersed over the surfaces of anatase TiO2 confer visible light photoactivity for the aqueous phase decomposition of organics through the resulting heterojunction and reduced band gap. Subsequent modification of these Co3O4/TiO2 composites by trace amounts of graphene oxide nanosheets in the presence of a diamine linker further promotes both oxytetracycline and Congo Red photodegradation under simulated solar and visible irradiation, through a combination of enhanced photoresponse and consequent radical generation. Radical quenching and fluorescence experiments implicate holes and hydroxyl radicals as the respective primary and secondary active species responsible for oxidative photodegradation of pollutants.

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Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license(
Uncontrolled Keywords: photocatalysis,titania,cobalt,graphene oxide,nanocomposite,Catalysis,Environmental Science(all),Process Chemistry and Technology
Publication ISSN: 1873-3883
Last Modified: 19 Jun 2024 07:12
Date Deposited: 18 Aug 2016 08:50
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-02
Published Online Date: 2016-08-11
Accepted Date: 2016-08-11
Submitted Date: 2016-04-24
Authors: Jo, Wan-Kuen
Kumar, Santosh (ORCID Profile 0000-0002-1352-9945)
Isaacs, Mark A.
Lee, Adam F. (ORCID Profile 0000-0002-2153-1391)
Karthikeyan, S.



Version: Published Version

License: Creative Commons Attribution

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