Microporous Borocarbonitrides BxCyNz: Synthesis, Characterization, and Promises for CO2 Capture - Université de Montpellier
Article Dans Une Revue Nanomaterials Année : 2023

Microporous Borocarbonitrides BxCyNz: Synthesis, Characterization, and Promises for CO2 Capture

Résumé

Porous borocarbonitrides (denoted BCN) were prepared through pyrolysis of the polymer stemmed from dehydrocoupled ethane 1,2-diamineborane (BH3NH2CH2CH2NH2BH3, EDAB) in the presence of F-127. These materials contain interconnected pores in the nanometer range with a high specific surface area up to 511 m2 · g−1. Gas adsorption of CO2 demonstrated an interesting uptake (3.23 mmol · g−1 at 0 °C), a high CO2/N2 selectivity as well as a significant recyclability after several adsorption–desorption cycles. For comparison’s sake, a synthesized non-porous BCN as well as a commercial BN sample were studied to investigate the role of porosity and carbon doping factors in CO2 capture. The present work thus tends to demonstrate that the two-step synthesis of microporous BCN adsorbent materials from EDAB using a bottom-up approach (dehydrocoupling followed by pyrolysis at 1100 °C) is relatively simple and interesting.

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Chimie
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hal-04039217 , version 1 (18-10-2023)

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Rimeh Mighri, Umit Demirci, Johan Alauzun. Microporous Borocarbonitrides BxCyNz: Synthesis, Characterization, and Promises for CO2 Capture. Nanomaterials, 2023, 13 (4), pp.734. ⟨10.3390/nano13040734⟩. ⟨hal-04039217⟩
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