A chimie douce approach to defunctionalizing carbon materials

Ivachnova, Karina 2022. A chimie douce approach to defunctionalizing carbon materials. MPhil Thesis, Cardiff University. Item availability restricted.

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Abstract

Various chitin and chitosan samples were studied using thermogravimetric analysis (TGA), x-ray photoelectron spectroscopy (XPS) and x-ray diffraction (XRD) methods to provide a better understanding of the materials. Materials were produced and prepared by Deregallera Ltd. Different chitin samples had several treatments to purify their structure from proteins and amino acids naturally present in biological polysaccharides, and some were commercially bought. Their Chitosan materials were developed through high temperature (1000 oC – 1400 oC) pyrolysis making hard carbons, which showed graphite-like structures and were used as a precursor for sodium-ion battery. Chitin was treated with dichloromethane and chloroform to further investigate if the materials surface composition changed using XPS and the best solvent medium was deduced. Chitin was treated with 25% trifluoroacetic anhydride in dichloromethane and reacted together at room temperature, magnetically stirring on a hot plate (heat was not applied) for 30 minutes, 2 hours, 4 hours, 6 hours and 24 hours, the resulting samples produced were analysed using TGA and XPS.

Item Type:	Thesis (MPhil)
Date Type:	Completion
Status:	Unpublished
Schools:	Schools > Chemistry
Date of First Compliant Deposit:	21 July 2023
Last Modified:	21 Jul 2024 01:30
URI:	https://orca.cardiff.ac.uk/id/eprint/161173

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