5-hydroxymethylfurfural as a potential monomer for the preparation of carbon aerogel

Title
5-hydroxymethylfurfural as a potential monomer for the preparation of carbon aerogel
Authors
이윤수윤지선서동진이창하서영웅
Keywords
Carbon; Aerogel; Sol-Gel growth; Hydroxymethylfurfural; Surface properties; Non-crystalline materials; X-ray photo-emission spectroscopy
Issue Date
2012-10
Publisher
Materials chemistry and physics
Citation
VOL 136, NO 2-3, 837-844
Abstract
To explore a potential of 5-hydroxymethylfurfural (HMF) in the preparation of carbon aerogels, phloroglucinol–HMF–furfural (PHF) and phloroglucinol–HMF (PH) alcogels were synthesized. It was found in PHF carbon aerogels that the addition of HMF led to a change in their surface chemical properties, i.e., the favorable formation of surface C–O and O=C–O groups. When phloroglucinol and HMF were used as a carbon monomer, PH alcogels were formed at room temperature within tens of minutes. The resulting PH carbon aerogels showed a surface area of 975–1290 ㎡ g−1, a pore size distribution centered at about 30 nm, and a pore volume of 1.35–1.86 ㎤ g−1. As a result of varying several preparation variables, their surface chemical properties were different in accordance with PHF samples. Additionally, a cyclic voltammetry test was conducted, resulting in the fact that the gravimetric capacitance of PHF and PH carbon aerogels showed strong dependence on their chemical characteristics. It was consequently revealed that, due to the peculiar structure of HMF, the preferential formation of C–O linkages through intermolecular dehydration occurs along with unreacted phenolic hydroxyl species of phloroglucinol at the surface, thus yielding a higher gravimetric capacitance.
URI
http://pubs.kist.re.kr/handle/201004/45690
ISSN
02540584
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KIST Publication > Article
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