Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination
Data(s) |
01/09/2014
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Resumo |
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. |
Formato |
application/pdf |
Identificador |
http://dx.doi.org/10.1016/j.apcatb.2014.03.046 http://pure.qub.ac.uk/ws/files/16666060/Mathematical_modelling_of_quantum_yield.pdf |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/openAccess |
Fonte |
Tokode , O , Prabhu , R , Lawton , L A & 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 , vol 156-157 , pp. 398-403 . DOI: 10.1016/j.apcatb.2014.03.046 |
Palavras-Chave | #Photocatalysis #Titanium dioxide #Quantum yield #Langmuir-Hinshelwood #Mathematical model #RELATIVE PHOTONIC EFFICIENCIES #PHASE PHOTOCATALYZED REACTIONS #HETEROGENEOUS PHOTOCATALYSIS #SEMICONDUCTOR PHOTOCATALYSIS #LIGHT-INTENSITY #KINETICS #DEGRADATION #PHOTOEFFICIENCY #DESTRUCTION #ADSORPTION |
Tipo |
article |