RT Journal Article
T1 S/N/O-Enriched Carbons from Polyacrylonitrile-Based Block Copolymers for Selective Separation of Gas Streams
A1 Gómez Díaz, Diego
A1 Domínguez Ramos, Lidia
A1 Malucelli, Giulio
A1 Freire Leira, María Sonia
A1 González Álvarez, Julia
A1 Lazzari, Massimo
K1 Block copolymer templates
K1 Hierarchical pores
K1 Atom transfer radical polymerization
K1 Sulfur-doping
K1 Oxidative-stabilization
AB A series of polyacrylonitrile (PAN)-based block copolymers with poly(methyl methacrylate) (PMMA) as sacrificial bock were synthesized by atom transfer radical polymerization and used as precursors for the synthesis of porous carbons. The carbons enriched with O- and S-containing groups, introduced by controlled oxidation and sulfuration, respectively, were characterized by Raman spectroscopy, scanning electron microscopy, and X-ray photoelectron spectrometry, and their surface textural properties were measured by a volumetric analyzer. We observed that the presence of sulfur tends to modify the structure of the carbons, from microporous to mesoporous, while the use of copolymers with a range of molar composition PAN/PMMA between 10/90 and 47/53 allows the obtainment of carbons with different degrees of porosity. The amount of sacrificial block only affects the morphology of carbons stabilized in oxygen, inducing their nanostructuration, but has no effect on their chemical composition. We also demonstrated their suitability for separating a typical N2/CO2 post-combustion stream
PB MDPI
YR 2024
FD 2024-01-18
LK https://hdl.handle.net/10347/43324
UL https://hdl.handle.net/10347/43324
LA eng
NO Gómez-Díaz, D.; Domínguez-Ramos, L.; Malucelli, G.; Freire, M.S.; González-Álvarez, J.; Lazzari, M. S/N/O-Enriched Carbons from Polyacrylonitrile-Based Block Copolymers for Selective Separation of Gas Streams. Polymers 2024, 16, 269. https://doi.org/10.3390/ polym16020269
NO This research was funded by the Ministerio de Ciencia, Innovación y Universidades, AEI PID2021-122923NB-I00 and by the Xunta de Galicia (Centro Singular de Investigación de Galicia, accreditation 2019–2022; ED431G2019/03, Consolidación e estructuración ED431B 2021/23) and the European Regional Development Fund
DS Minerva
RD 30 abr 2026