4.6 Article

Preparation of Ammonium Persulfate/Glycerol based Novel Deep Eutectic Solvent under controlled conditions; Characterizations, Physical properties

Journal

JOURNAL OF MOLECULAR STRUCTURE
Volume 1283, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.molstruc.2023.135265

Keywords

Deep eutectic solvent; Fourier transform infrared spectroscopy; Photoluminescence; Physical properties

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A novel deep eutectic solvent was prepared by combining ammonium persulfate and glycerol, and its chemical and electronic properties were characterized through FTIR spectroscopy and photoluminescence spectroscopy. The physical properties such as density, viscosity, surface tension, and freezing point were also reported, indicating the suitability of the solvent for various applications.
A mixture of pure compounds is a deep eutectic solvent (DES) if it has a low eutectic point temperature and remains liquid at operating temperatures within a specific composition range. They are prepared by a combination of salt with hydrogen bond donor (HBD) moiety to some definite molar ratio. In the current study, a novel deep eutectic solvent was prepared by combining ammonium persulfate and glycerol in a 1:1.2 molar ratio using a discrete ramp input temperature response to prevent an uncontrolled reaction that could result in the emission of smoke and potential bursting. The affinity of ammonium persulfate for mixing with other HBDs was not significant. Moreover, the bonding behavior of the novel deep eu-tectic solvent was determined through FTIR spectroscopic analysis, which confirmed the physiochemical combination of its constituents and indicated the successful preparation of the DES, as evidenced by the significant shift of its characteristic peaks. The photoluminescence spectroscopic study was carried out to get insight about the electronic properties of the DES sample. The relationship between electrical con-ductivity rise with temperature was studied via a calibrated digital hand-held conductivity meter. The physical properties such as density, viscosity, surface tension, and freezing point of the immaculate DES at different tem peratures were also reported. The variation in physical characteristics allowed the pre-pared DES to be appropriate for miscellaneous applications. ?? 2023 Elsevier B.V. All rights reserved.

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