Hydrophobic Metal–Formate Composites for Efficient CO2 Capture

Published

February 26, 2025

Author(s)

Rajesh Das, He Li, Hayden Evans, Zeyu Deng, Dan Zhao, Anthony K. Cheetham

Abstract

Carbon capture, utilization, and sequestration (CCUS) have emerged as pivotal mitigation strategies in addressing climate change induced by greenhouse gas emissions. In this pursuit, our objective is to enhance the efficacy of adsorptive CO2 capture by harnessing state-of-the-art framework sorbents engineered for exceptional CO2 selectivity, high intrinsic stability in the presence of moisture, and facile regeneration. To this end, a series of ultramicroporous mixed aluminum and iron formate framework materials, Fe-ALFs, were synthesized. Furthermore, their moisture stability has been significantly enhanced by passivation with polyvinylidene fluoride (Fe-ALF-PVDF). Gas sorption and breakthrough measurements demonstrate that Fe-ALF-PVDF exhibits outstanding CO2 adsorption capacities (4.6 mmol/g at 298 K) and remarkable CO2/N2 selectivity (387). In addition, it can be economically produced from readily available chemicals and is easy to regenerate. Fe-ALF-PVDF presents an innovative adsorbent material for efficiently capturing CO2 from humid post-combustion flue gases and other moisture-rich gas streams.

Citation

Journal of the American Chemical Society

Volume

147

Issue

10

Pub Type

Journals

Download Paper

https://doi.org/10.1021/jacs.4c16131

Local Download

Keywords

CO2 Capture, ALF, hydrophobic, Aluminum Formate

Citation

Das, R. , Li, H. , Evans, H. , Deng, Z. , Zhao, D. and Cheetham, A. (2025), Hydrophobic Metal–Formate Composites for Efficient CO₂ Capture, Journal of the American Chemical Society, [online], https://doi.org/10.1021/jacs.4c16131, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=959075 (Accessed July 12, 2025)