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Erschienen in: Journal of Polymer Research 8/2021

01.08.2021 | ORIGINAL PAPER

Uncarbonized crosslinked PVA-modified MMT/reduced graphene hybrid aerogel for efficient carbon dioxide adsorption at low pressure

verfasst von: Sona Stanly, Honey John

Erschienen in: Journal of Polymer Research | Ausgabe 8/2021

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Abstract

Graphene-based polymer aerogels are one of the important solutions for the adsorption of CO2. In the present study, we have developed an economic, uncarbonized polyvinyl alcohol (PVA) based aerogel through the freeze-drying method using modified clay- reduced graphene oxide (rGO) hybrid as filler. The CO2 capture efficiency of PVA-modified clay/rGO aerogel containing the hybrid filler in three different concentrations such as 0.1 w/v%, 0.5 w/v% and 1 w/v% at 25 °C and comparatively low pressure ranging from 0 to 900 mmHg was studied. The polyphosphoric acid (PPA) modified montmorillonite (PMMT)/rGO hybrid was synthesized by the hydrothermal method by varying the ratio of the individual components in 2:1 and 1:2 ratios and compared with a 1:1 ratio hybrid. The powdered hybrids were characterized and analyzed for CO2 adsorption analysis. All the powdered hybrids were showing good CO2 gas adsorption efficiency and the efficiency was increased with an increase in rGO content and hybrid with 1:2 ratio showed a CO2 adsorption efficiency of 0.53 mmol g−1. PVA aerogel was synthesized using 1:1 and 1:2 PMMT/rGO hybrids and CO2 adsorption capacity were analyzed. PVA-PMMT/rGO aerogel of 1:2 ratio with 0.5 w/v% showed only 0.176 mmol g−1 whereas PVA-PMMT/rGO aerogel of 1:1 ratio with 0.5 w/v% showed an excellent CO2 adsorption capacity of 0.238 mmol g−1 at 900 mmHg at 25 °C temperature and it is significantly high when compared with the literature results. The developed PVA-PMMT/rGO hybrid aerogel is an excellent material for CO2 adsorption and it can be directly used for reducing the CO2 level in the atmosphere.

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Metadaten
Titel
Uncarbonized crosslinked PVA-modified MMT/reduced graphene hybrid aerogel for efficient carbon dioxide adsorption at low pressure
verfasst von
Sona Stanly
Honey John
Publikationsdatum
01.08.2021
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 8/2021
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-021-02614-x

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