Jo, WK;
Kumar, S;
Isaacs, MA;
Lee, AF;
Karthikeyan, S;
(2017)
Cobalt promoted TiO2/GO for the photocatalytic degradation of oxytetracycline and Congo Red.
Applied Catalysis B: Environmental
, 201
pp. 159-168.
10.1016/j.apcatb.2016.08.022.
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Abstract
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 Co3O4nanoparticles dispersed over the surfaces of anatase TiO2confer visible light photoactivity for the aqueous phase decomposition of organics through the resulting heterojunction and reduced band gap. Subsequent modification of these Co3O4/TiO2composites 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.
| Type: | Article |
|---|---|
| Title: | Cobalt promoted TiO2/GO for the photocatalytic degradation of oxytetracycline and Congo Red |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.apcatb.2016.08.022 |
| Publisher version: | https://doi.org/10.1016/j.apcatb.2016.08.022 |
| Language: | English |
| Additional information: | © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Photocatalysis, Titania, Cobalt, Graphene oxide, Nanocomposite |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10053071 |
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