Metal-Free Modified Boron Nitride for Enhanced CO 2 Capture

Fereshteh Hojatisaeidi, Mauro Mureddu, Federica Dessì, Geraldine Durand and Basudeb Saha
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Fereshteh Hojatisaeidi: School of Engineering, London South Bank University, 103 Borough Road, London SE1 0AA, UK
Mauro Mureddu: Sotacarbo S.p.A. Grande Miniera di Serbariu, 09013 Carbonia (CA), Italy
Federica Dessì: Sotacarbo S.p.A. Grande Miniera di Serbariu, 09013 Carbonia (CA), Italy
Geraldine Durand: School of Engineering, London South Bank University, 103 Borough Road, London SE1 0AA, UK
Basudeb Saha: School of Engineering, London South Bank University, 103 Borough Road, London SE1 0AA, UK

Energies, 2020, vol. 13, issue 3, 1-11

Abstract: Porous boron nitride is a new class of solid adsorbent with applications in CO 2 capture. In order to further enhance the adsorption capacities of materials, new strategies such as porosity tuning, element doping and surface modification have been taken into account. In this work, metal-free modification of porous boron nitride (BN) has been prepared by a structure directing agent via simple heat treatment under N 2 flow. We have demonstrated that textural properties of BN play a pivotal role in CO 2 adsorption behavior. Therefore, addition of a triblock copolymer surfactant (P123) has been adopted to improve the pore ordering and textural properties of porous BN and its influence on the morphological and structural properties of pristine BN has been characterized. The obtained BN-P123 exhibits a high surface area of 476 m 2 /g, a large pore volume of 0.83 cm 3 /g with an abundance of micropores. More importantly, after modification with P123 copolymer, the capacity of pure CO 2 on porous BN has improved by about 34.5% compared to pristine BN (2.69 mmol/g for BN-P123 vs. 2.00 mmol/g for pristine BN under ambient condition). The unique characteristics of boron nitride opens up new routes for designing porous BN, which could be employed for optimizing CO 2 adsorption.

Keywords: porous boron nitride; metal-free modification; structure directing agent; CO 2 capture (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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