Micro porous carbon spheres from cyclodextrin nanosponges

Abstract

(AAM) is copyrighted and published by Elsevier. It is posted here by agreement between Elsevier and the University of Turin. Changes resulting from the publishing process-such as editing, corrections, structural formatting, and other quality control mechanismsmay not be reflected in this version of the text. The definitive version of the text was subsequently published in Microporous and Mesoporous Materials 235 (2016) 178-184. You may download, copy and otherwise use the AAM for non-commercial purposes provided that your license is limited by the following restrictions: (1) You may use this AAM for non-commercial purposes only under the terms of the CC-BY-NC-ND license. (2) The integrity of the work and identification of the author, copyright owner, and publisher must be preserved in any copy.

One‐step facile process to obtain insoluble polysaccharides fibrous mats from electrospinning of water‐soluble PMDA/cyclodextrin polymer

“…The main weight loss step centered at 255 °C is due to the pyrolysis of the polymer starting from the weaker bond, in this case the ester bond between PMDA and βCD. However, in the 220–330 °C temperature range the thermal degradation of the βCD takes place too, resulting in a competition between an intramolecular path, leading to the generation of volatile products, in particularly levoglucosan, and an intermolecular path that leads to the production of a carbon residue . A residue corresponding to the 40 wt % of the initial weight is observed at the end of this degradative step.…”

“…However, in the 220-330 8C temperature range the thermal degradation of the bCD takes place too, resulting in a competition between an intramolecular path, leading to the generation of volatile products, in particularly levoglucosan, and an intermolecular path that leads to the production of a carbon residue. 39,40 A residue corresponding to the 40 wt % of the initial weight is observed at the end of this degradative step. However, this residue is not thermally stable and undergoes a progressive volatilization between 400 and 600 8C.…”

New Poly(β-Cyclodextrin)/Poly(Vinyl Alcohol) Electrospun Sub-Micrometric Fibers and Their Potential Application for Wastewater Treatments

“…Importantly, no additional bands at 1850 cm −1 and 1780 cm −1 can be seen in the cured fibers. These bands are ascribed to the C = O stretching of pyromellitic moieties formed by the scission of the ester bridge inside the Poly-βCD [36,37]. Their absence confirms that the thermal treatment does not damage the structure of the polymer in the fibers.…”

Dual confinement of sulphur with rGO-wrapped microporous carbon from β-cyclodextrin nanosponges as a cathode material for Li–S batteries

“…Synthesis of microporous carbon spheres: Polymer β-cyclodextrin also termed as β-cyclodextrin nanosponge was prepared by crosslinking reaction using pyromellitic dianhydride (PY) following a procedure previously described [30]. The PY cross-linked NS were prepared in 1:4 molar ratio hours.…”