Skip to main content

Research Repository

See what's under the surface

Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination.

Tokode, Oluwatosin; Prabhu, Radhakrishna; Lawton, Linda A.; K.J.Robertson, Peter

Authors

Oluwatosin Tokode

Radhakrishna Prabhu

Linda A. Lawton

Peter K.J.Robertson



Abstract

Quantum yields of the photocatalytic degradation of methyl orange under controlled periodic illumination (CPI) have been modelled using existing models. A modified Langmuir-Hinshelwood (L-H) rate equation was used to predict the degradation reaction rates of methyl orange at various duty cycles and a simple photocatalytic model was applied in modelling quantum yield enhancement of the photocatalytic process due to the CPI effect. A good agreement between the modelled and experimental data was observed for quantum yield modelling. The modified L-H model, however, did not accurately predict the photocatalytic decomposition of the dye under periodic illumination.

Journal Article Type Article
Publication Date Sep 1, 2014
Journal Applied catalysis B: environmental
Print ISSN 0926-3373
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 156-157
Pages 398-403
Institution Citation TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2014. Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination. Applied catalysis B: environmental [online], 156-157, pages 398-403. Available from: https://doi.org/10.1016/j.apcatb.2014.03.046
DOI https://doi.org/10.1016/j.apcatb.2014.03.046
Keywords Photocatalysis; Titanium dioxide; Quantum yield; Langmuir Hinshelwood; Mathematical model

Files





You might also like



Downloadable Citations