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Open AccessArticle

Metal-Free Modified Boron Nitride for Enhanced CO2 Capture

1
School of Engineering, London South Bank University, 103 Borough Road, London SE1 0AA, UK
2
Sotacarbo S.p.A. Grande Miniera di Serbariu, 09013 Carbonia (CA), Italy
3
The Welding Institute, Granta Park, Great Abington, Cambridge CB21 6AL, UK
*
Author to whom correspondence should be addressed.
Energies 2020, 13(3), 549; https://doi.org/10.3390/en13030549
Received: 28 November 2019 / Revised: 16 January 2020 / Accepted: 21 January 2020 / Published: 23 January 2020
(This article belongs to the Special Issue Carbon Dioxide (CO2) Utilization)
Porous boron nitride is a new class of solid adsorbent with applications in CO2 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 N2 flow. We have demonstrated that textural properties of BN play a pivotal role in CO2 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 m2/g, a large pore volume of 0.83 cm3/g with an abundance of micropores. More importantly, after modification with P123 copolymer, the capacity of pure CO2 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 CO2 adsorption. View Full-Text
Keywords: porous boron nitride; metal-free modification; structure directing agent; CO2 capture porous boron nitride; metal-free modification; structure directing agent; CO2 capture
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MDPI and ACS Style

Hojatisaeidi, F.; Mureddu, M.; Dessì, F.; Durand, G.; Saha, B. Metal-Free Modified Boron Nitride for Enhanced CO2 Capture. Energies 2020, 13, 549.

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