1. Prospective carbon nanofibers based on polymer of intrinsic microporosity (PIM-1): Pore structure regulation for higher carbon sequestration and renewable energy source applications.
- Author
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Skupov, Kirill M., Vtyurina, Elizaveta S., Ponomarev, Igor I., Ponomarev, Ivan I., and Aysin, Rinat R.
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MICROPOROSITY , *POROSITY , *CARBON nanofibers , *CARBON dioxide adsorption , *RENEWABLE energy sources , *CARBON dioxide , *CARBON foams , *CARBON sequestration - Abstract
Polymer of intrinsic microporosity (PIM-1) is characterized by a developed microporous structure. Needle-free Nanospider™ electrospinning of the PIM-1 solution with subsequent pyrolysis either under vacuum or in argon-hydrogen medium (7 vol% H 2) at 900–1200 °C results in PIM-1 based carbon nanofibers (CNF) self-supporting mats. The samples were thoroughly characterized by N 2 and CO 2 adsorption using the BET, BJH, Dubinin-Radushkevich (DR), NLDFT and GCMC methods, CO 2 uptake, and by Raman spectroscopy, elemental analysis, electrical conductivity, SEM. Since the N 2 adsorption is found to be inapplicable, the presence of microporosity in the CNF is confirmed by CO 2 adsorption (273 K) by the DR, NLDFT and GCMC methods. The CNF reach micropore specific surface area of 919 m2 g−1, micropore volume of 0.257 cm3 g−1 and CO 2 uptake of 4.01 mmol g−1, which is higher than for initial PIM-1. Pt/PIM-1 CNF self-supporting mat, was successfully tested as anode for HT-PEM fuel cell. Carbon dioxide adsorption method unveils PIM-1 carbon nanofiber microporosity exceeding PIM-1 microporosity. [Display omitted] • Electrospun PIM-1 carbon nanofibers are mostly ultramicroporous. • Microporosity characteristics of PIM-1 CNF exceed the ones for PIM-1. • PIM-1 CNF specific surface area reaches 919 m2 g−1 • CO 2 uptake for PIM-1 CNF is higher than for PIM-1. • Pt/PIM-1 CNF mats can be used as anodes in HT-PEM fuel cell. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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