The interboundary properties and kinematics of N719 dye with titania photoanode framework and spectral responses with different electrolytes

Abodunrin, T.J and Boyo, A. O. and Usikalu, M.R. (2018) The interboundary properties and kinematics of N719 dye with titania photoanode framework and spectral responses with different electrolytes. Cogent Physics, 5.

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Abstract

Titanium oxide is as ancient in age as our planet but its use for photoanode is more recent. It exists naturally as rutile (the second most abundant), anatase and brookite ores. The anatase several metastable states trigger diverse spectral responses with Magnifera Indica Linn. (M.indica L) dye as it is synthesized with an N719 dye grown on its matrix. Facile doctor blade method and high temperature sintering at 723 Kwere used in fabrication. Doping of titanium oxide in effect lowers the band gap of TiO2 for photo-excitation caused by a bathochromic shift and simultaneously decreases the rate of recombination in photogenerated electron–hole pairs. This study explored the visible light induced photocatalytic action of doped M.indica L DSSC towards reduction of titaniumoxide bandgap. The SEMmicrographs reveal themolecular interactions and the interplay as electrolytes percolate the intricate N719 dye/Titania framework. Detailed analysis stem from comparison of M.indica L crude faction and the batch separated faction using FTIR spectroscopy. The absorbance peak, rates of reaction and % transmittance identify the particular chromophores responsible for the reaction. Result shows the batch-separated hexane faction approximately 1000 times more efficient than its crude faction although the ff of the crude was only about twice that of the hexane faction. The optical study showed that doping ions lead to an increase in the absorption edge wavelength, and a decrease in the band gap energy of TiO2 nanoparticles. The doped TiO2 nanoparticles in general showed higher photocatalytic activities than the pure ones.

Item Type:	Article
Uncontrolled Keywords:	energy harvesting; titanium oxide; dopants; batch-separation; efficiency
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Divisions:	Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User:	Mrs Patricia Nwokealisi
Date Deposited:	07 Sep 2018 11:39
Last Modified:	07 Sep 2018 11:39
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/11518

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