The physicochemical investigation of hydrothermally reduced textile waste and application within carbon-based electrodes
AuthorsRandviir, Edward P.
Liauw, Christopher M.
Smith, Graham C.
AffiliationManchester Metropolitan University; University of Chester
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AbstractTextile waste is on the rise due to the expanding global population and the fast fashion market. Large volumes of textile waste are increasing the need for new methods for recycling mixed fabric materials. This paper employs a hydrothermal conversion route for a polyester/cotton mix in phosphoric acid to generate carbon materials (hydrochars) for electrochemical applications. A combination of characterization techniques revealed the reaction products were largely comprised of two major components. The ﬁrst is a granular material with a surface C : O ratio of 2 : 1 interspersed with phosphorous and titanium proved using energy dispersive X-ray spectroscopy, and the other is a crystalline material with a surface C : O ratio of 3 : 2 containing no phosphorous or titanium. The latter material was found via X-ray diﬀraction and diﬀerential scanning calorimetry to be terephthalic acid. Electrochemical experiments conducted using the hydrochar as a carbon paste electrode demonstrates an increase in current response compared to carbon reference materials. The improved current responses, intrinsically related to the surface area of the material, could be beneﬁcial for electrochemical sensor applications, meaning that this route holds promise for the development of a cheap recycled carbon material, using straightforward methods and simple laboratory reagents.
CitationRandviir, E. P., Kanou, O., Liauw, C. M., Miller, G. J., Andrews, H. G. & Smith, G. C. (2019). The physicochemical investigation of hydrothermally reduced textile waste and application within carbon-based electrodes. RSC Advances, 9, 11239
PublisherRoyal Society of Chemistry
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