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
Linda A. Lawton
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|
|Peer Reviewed||Peer Reviewed|
|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|
|Keywords||Photocatalysis; Titanium dioxide; Quantum yield; Langmuir Hinshelwood; Mathematical model|
TOKODE 2014 Mathematical modelling of quantum yield
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