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Title: Production of spherical mesoporous molecularly imprinted polymer particles containing tunable amine decorated nanocavities with CO2 molecule recognition properties
Authors: Nabavi, Seyed Ali
Vladisavljevic, Goran T.
Eguagie, Eseosa M.
Li, Beichen
Georgiadou, Stella
Manovic, Vasilije
Keywords: CO2 recognition property
Molecularly imprinted polymer adsorbents
Amide decorated cavities
Post combustion carbon capture
Suspension polymerization
Dynamic CO2 adsorption isotherms
Issue Date: 2016
Publisher: © Elsevier
Citation: NABAVI, S.A. ... et al, 2016. Production of spherical mesoporous molecularly imprinted polymer particles containing tunable amine decorated nanocavities with CO2 molecule recognition properties. Chemical Engineering Journal, 306, pp. 214-225.
Abstract: Novel spherical molecularly imprinted polymer (MIP) particles containing amide-decorated nanocavities with CO2 recognition properties in the poly[acrylamide-co-(ethyleneglycol dimethacrylate)] mesoporous matrix were synthesized by suspension polymerization using oxalic acid and acetonitrile/toluene as dummy template and porogen mixture, respectively. The particles had a maximum BET surface area, SBET, of 457 m2/g and a total mesopore volume of 0.92 cm3/g created by phase separation between the copolymer and porogenic solvents. The total volume of the micropores (d < 2 nm) was 0.1 cm3/g with two sharp peaks at 0.84 and 0.85 nm that have not been detected in non-imprinted polymer material. The degradation temperature at 5% weight loss was 240–255 °C and the maximum equilibrium CO2 adsorption capacity was 0.56 and 0.62 mmol/g at 40 and 25 °C, respectively, and 0.15 bar CO2 partial pressure. The CO2 adsorption capacity was mainly affected by the density of CO2-philic NH2 groups in the polymer network and the number of nanocavities. Increasing the content of low-polar solvent (toluene) in the organic phase prior to polymerization led to higher CO2 capture capacity due to stronger hydrogen bonds between the template and the monomer during complex formation. Under the same conditions, molecularly imprinted particles showed much higher CO2 capture capacity compared to their non-imprinted counterparts. The volume median diameter (73–211 μm) and density (1.3 g/cm3) of the produced particles were within the range suitable for CO2 capture in fixed and fluidized bed systems.
Description: This paper is embargoed until July 2017.
Sponsor: The authors gratefully acknowledge the financial support for this work by coERCe granted by Innovate UK, project Grant: 102213, and Cambridge Engineering and Analysis Design (CEAD) Ltd.
Version: Accepted for publication
DOI: 10.1016/j.cej.2016.07.054
URI: https://dspace.lboro.ac.uk/2134/22119
Publisher Link: http://dx.doi.org/10.1016/j.cej.2016.07.054
ISSN: 1873-3212
Appears in Collections:Closed Access (Chemical Engineering)

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