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N‐Doped Polypyrrole‐Based Porous Carbons for CO2 Capture

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Sevilla, Marta, Valle‐Vigón, Patricia, Fuertes, Antonio B.·2011·Advanced Functional Materials

Abstract

Highly porous N‐doped carbons have been successfully prepared by using KOH as activating agent and polypyrrole (PPy) as carbon precursor. These materials were investigated as sorbents for CO 2 capture. The activation process was carried out under severe (KOH/PPy = 4) or mild (KOH/PPy = 2) activation conditions at different temperatures in the 600–800 °C range. Mildly activated carbons have two important characteristics: i) they contain a large number of nitrogen functional groups (up to 10.1 wt% N) identified as pyridonic‐N with a small proportion of pyridinic‐N groups, and ii) they exhibit, in relation to the carbons prepared with KOH/PPy = 4, narrower micropore sizes. The combination of both of these properties explains the large CO 2 adsorption capacities of mildly activated carbon. In particular, a very high CO 2 adsorption uptake of 6.2 mmol·g−1 (0 °C) was achieved for porous carbons prepared with KOH/PPy = 2 and 600 °C (1700 m 2·g−1, pore size ≈ 1 nm and 10.1 wt% N). Furthermore, we observed that these porous carbons exhibit high CO 2 adsorption rates, a good selectivity for CO 2‐N 2 separation and it can be easily regenerated.

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Metadata

Authors
Sevilla, M., Valle‐Vigón, P., & Fuertes, A. B.
Venue
Advanced Functional Materials
Publisher
Wiley
Published
2011-05-24
Volume
21
Issue
14
Pages
2781-2787
ISSN
  • 1616-301X (ISSN-L)
  • 1616-3028
OpenAlex
W2070821099
Cited by
936
References
42
FWCI
83.10
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: N‐Doped Polypyrrole‐Based Porous Carbons for CO2 Capture. https://app.cochat.ai/papers/10.1002/adfm.201100291
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Sevilla, M., Valle‐Vigón, P., & Fuertes, A. B. (2011). N‐Doped Polypyrrole‐Based Porous Carbons for CO2 Capture. Advanced Functional Materials. https://doi.org/10.1002/adfm.201100291

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