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Degradation of paracetamol by advance oxidation processes using modified reticulated vitreous carbon electrodes with TiO2 and CuO/TiO2/Al2O3

Degradation of paracetamol by advance oxidation processes using modified reticulated vitreous carbon electrodes with TiO2 and CuO/TiO2/Al2O3
Degradation of paracetamol by advance oxidation processes using modified reticulated vitreous carbon electrodes with TiO2 and CuO/TiO2/Al2O3
The degradation of paracetamol in aqueous solutions in the presence of hydrogen peroxide was carried out by photochemistry, electrolysis and photoelectrolysis using modified 100 pores per inch reticulated vitreous carbon electrodes. The electrodes were coated with catalysts such as TiO2 and CuO/TiO2/Al2O3 by electrophoresis followed by heat treatment. The results of the electrolysis with bare reticulated vitreous carbon electrodes show that 90% paracetamol degradation occurs in 4 h at 1.3 V vs. SCE, forming intermediates such as benzoquinone and carboxylic acids followed by their complete mineralisation. When the electrolysis was carried out with the modified electrodes such as TiO2/RVC, 90% degradation was achieved in 2 h while with CuO/TiO2/Al2O3/RVC, 98% degradation took only 1 h. The degradation was also carried out in the presence of UV reaching 95% degradation with TiO2/RVC/UV and 99% with CuO/TiO2/Al2O3/RVC/UV in 1 h. The reactions were followed by spectroscopy UV–Vis, HPLC and total organic carbon analysis. These studies show that the degradation of paracetamol follows a pseudo-first order reaction kinetics.
advanced oxidation processes (AOPs), electrocatalysis, paracetamol, photocatalysis, photoelectrocatalysis, reticulated vitreous carbon
0045-6535
1195-1201
Arredondo Valdez, H.C.
1e025882-4c6a-4dd0-836e-c31433a969fd
García Jiménez, G.
b29807d0-4798-4912-8c06-9ee69490b187
Gutiérrez Granados, S.
e049faa9-9490-4089-8110-7ea754bb66bf
Ponce de Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Arredondo Valdez, H.C.
1e025882-4c6a-4dd0-836e-c31433a969fd
García Jiménez, G.
b29807d0-4798-4912-8c06-9ee69490b187
Gutiérrez Granados, S.
e049faa9-9490-4089-8110-7ea754bb66bf
Ponce de Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c

Arredondo Valdez, H.C., García Jiménez, G., Gutiérrez Granados, S. and Ponce de Leon, Carlos (2012) Degradation of paracetamol by advance oxidation processes using modified reticulated vitreous carbon electrodes with TiO2 and CuO/TiO2/Al2O3. Chemosphere, 89 (10), 1195-1201. (doi:10.1016/j.chemosphere.2012.07.020).

Record type: Article

Abstract

The degradation of paracetamol in aqueous solutions in the presence of hydrogen peroxide was carried out by photochemistry, electrolysis and photoelectrolysis using modified 100 pores per inch reticulated vitreous carbon electrodes. The electrodes were coated with catalysts such as TiO2 and CuO/TiO2/Al2O3 by electrophoresis followed by heat treatment. The results of the electrolysis with bare reticulated vitreous carbon electrodes show that 90% paracetamol degradation occurs in 4 h at 1.3 V vs. SCE, forming intermediates such as benzoquinone and carboxylic acids followed by their complete mineralisation. When the electrolysis was carried out with the modified electrodes such as TiO2/RVC, 90% degradation was achieved in 2 h while with CuO/TiO2/Al2O3/RVC, 98% degradation took only 1 h. The degradation was also carried out in the presence of UV reaching 95% degradation with TiO2/RVC/UV and 99% with CuO/TiO2/Al2O3/RVC/UV in 1 h. The reactions were followed by spectroscopy UV–Vis, HPLC and total organic carbon analysis. These studies show that the degradation of paracetamol follows a pseudo-first order reaction kinetics.

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More information

e-pub ahead of print date: 26 August 2012
Published date: 10 November 2012
Keywords: advanced oxidation processes (AOPs), electrocatalysis, paracetamol, photocatalysis, photoelectrocatalysis, reticulated vitreous carbon
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 348257
URI: https://eprints.soton.ac.uk/id/eprint/348257
ISSN: 0045-6535
PURE UUID: 31f08a31-33d7-4bf0-982b-dd3a3b881ab0
ORCID for Carlos Ponce de Leon: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 11 Feb 2013 11:35
Last modified: 06 Jun 2018 12:42

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