Taming structure and modulating carbon dioxide (CO2) adsorption isosteric heat of nickel-based metal organic framework (MOF-74(Ni)) for remarkable CO2 capture

Lei Lei; Yan Cheng; Changwei Chen; Mohammadreza Kosari; Zeyu Jiang; Chi He

doi:10.1016/j.jcis.2021.12.163

Taming structure and modulating carbon dioxide (CO₂) adsorption isosteric heat of nickel-based metal organic framework (MOF-74(Ni)) for remarkable CO₂ capture

J Colloid Interface Sci. 2022 Apr 15:612:132-145. doi: 10.1016/j.jcis.2021.12.163. Epub 2021 Dec 29.

Authors

Lei Lei¹, Yan Cheng², Changwei Chen³, Mohammadreza Kosari⁴, Zeyu Jiang⁵, Chi He⁶

Affiliations

¹ State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, Shaanxi, PR China.
² State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, Shaanxi, PR China; State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710048, Shaanxi, PR China.
³ State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710048, Shaanxi, PR China; Department of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
⁴ Department of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
⁵ State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710048, Shaanxi, PR China. Electronic address: Jiangzeyu1994@126.com.
⁶ State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710048, Shaanxi, PR China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China. Electronic address: chi_he@xjtu.edu.cn.

PMID: 34992014
DOI: 10.1016/j.jcis.2021.12.163

Abstract

Though the highest CO₂ capture capacity belongs to liquid amine-solutions, solid matters capable of CO₂ capture are also highly sought, providing that, they offer at least analogous CO₂ adsorption capacity and CO₂/N₂ selectivity. Herein, a surprisingly high-performance Ni-based metal-organic framework for CO₂ adsorption, namely MOF-74(Ni), was synthesized by a facile condensation reflux approach. It was found that the structure and CO₂ adsorption isosteric heat of MOF-74(Ni) could tune upon varying the synthesis duration under various temperatures. The optimized MOF-74(Ni)-24-140 (synthesized at 140 °C for 24 h) displays outstanding CO₂ adsorption capacity of 8.29/6.61 mmol/g at 273/298 K under normal pressure of 1.0 bar, several times higher than previously reported MOF-74-Ni (2.0/2.1 times), UTSA-16 (1.5/1.6 times), and DA-CMP-1 (3.6/4.9 times) under similar conditions. The excellent CO₂ capture capacity is associated to the abundant adsorption sites (mainly arising from the cationic Ni²⁺ ions) and narrow micropore channels (mainly arising from the cage structure of Ni²⁺ ions coordinated with organic linkers). Offering a high CO₂ selectivity (CO₂/N₂ = 49) and a well-tuned isosteric heat of CO₂ adsorption (27-52 kJ/mol) besides its decent CO₂ capture capacity, MOF-74(Ni) strongly stands out as an efficient and strong CO₂ capturing material with industrial scale applicability.

Keywords: CO(2) adsorption; CO(2) capture; CO(2)/N(2) selectivity; Isosteric heat; MOF modulation; MOF-74(Ni).