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HERO ID
7738340
Reference Type
Journal Article
Title
Solvent dependent natural dye extraction and its sensitization effect for dye sensitized solar cells
Author(s)
Adedokun, O; Sanusi, YK; Awodugba, AO
Year
2018
Is Peer Reviewed?
1
Journal
Optik
ISSN:
0030-4026
Publisher
Elsevier GmbH
Volume
174
Page Numbers
497-507
Language
English
DOI
10.1016/j.ijleo.2018.06.064
Web of Science Id
WOS:000447247700064
Abstract
In this study, we have evaluated the effect of various solvents for natural dye extraction and suitable sensitization of the same extracted dye on mesoporous TiO2 for dye sensitized solar Cell (DSSC) applications. Twelve different extraction solvents, namely, distilled water, ethanol, acetone, methanol, acetonitrile, dimethyl sulfoxide (DMSO), chloroform, n-hexane, ethyl acetate, toluene, dichloromethane (DCM) and isopropanol were employed to extract natural dyes from Punica granatum (pomegranate) peels, Citrus reticulata (tangerine) peels and Parquetina nigrescens (African parquentina) leaf. The polar solvents like; distilled water, methanol and ethanol were found to perform best to extract betacyanin dye from Punica granatum peels while the non-polar solvents like; dichloromethane and chloroform extract the most carotenoid and chlorophyll from Citrus reticulata peels and Parquetina nigrescens leaf, respectively. The natural dye extraction process was analyzed using UVâvis and photoluminescence spectroscopy. Further the extracted dye sensitization over TiO2 was monitored with solvent dependent surface wettability chemistry using contact angle measurements. The best dye adsorption solvent was achieved from using distilled water, acetone and dichloromethane for Punica granatum, Citrus reticulata and Parquetina nigrescens dyes, respectively. © 2018 Elsevier GmbH
Keywords
Natural dye; Extraction; Solvents; Absorption; Dye sensitized solar cell
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