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Studies of Dye Sensitisation Kinetics and Sorption Isotherms of Direct Red 23 on Titania
Joint Authors
Wijdekop, Maarten
Worsley, David A.
Butler, Ian
Holliman, Peter J.
Vaca Velasco, Beatriz
Source
International Journal of Photoenergy
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-07-06
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Sorption kinetics and isotherms have been measured for a commercial dye (Direct Red 23) on different samples of powdered Titania, and the data were analysed to better understand the dye sensitization process for dye sensitised solar cells (DSSCs).
For the sorption kinetics, the data show rapid initial sorption (<1 hour) followed by slower rate of increasing uptake between 1 and 24 hours.
While higher initial concentrations of dye correspond to higher sorption overall, less dye is absorbed from higher initial dye concentrations when considered as percentage uptake.
The correlation between the sorption data and model isotherms has been considered with time.
The Langmuir model shows better correlations compared to the Freundlich isotherm.
The dye uptake data has also been correlated with Titania characterization data (X-ray diffraction, scanning electron microscopy, BET and zero point charge analysis).
Kinetic data show significantly better fits to second-order models compared to first order.
This suggests that chemisorption is taking place and that the interaction between the dye sorbate and the Titania sorbent involves electron sharing to form an ester bond.
American Psychological Association (APA)
Holliman, Peter J.& Vaca Velasco, Beatriz& Butler, Ian& Wijdekop, Maarten& Worsley, David A.. 2008. Studies of Dye Sensitisation Kinetics and Sorption Isotherms of Direct Red 23 on Titania. International Journal of Photoenergy،Vol. 2008, no. 2008, pp.1-7.
https://search.emarefa.net/detail/BIM-501353
Modern Language Association (MLA)
Holliman, Peter J.…[et al.]. Studies of Dye Sensitisation Kinetics and Sorption Isotherms of Direct Red 23 on Titania. International Journal of Photoenergy No. 2008 (2008), pp.1-7.
https://search.emarefa.net/detail/BIM-501353
American Medical Association (AMA)
Holliman, Peter J.& Vaca Velasco, Beatriz& Butler, Ian& Wijdekop, Maarten& Worsley, David A.. Studies of Dye Sensitisation Kinetics and Sorption Isotherms of Direct Red 23 on Titania. International Journal of Photoenergy. 2008. Vol. 2008, no. 2008, pp.1-7.
https://search.emarefa.net/detail/BIM-501353
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-501353