Porous Covalent Organic Polymers for Efficient Fluorocarbon-Based Adsorption Cooling

Published

August 9, 2021

Author(s)

Jian Zheng, Mohammad Wahiduzzman, Dushyant Barpaga, Benjamin Trump, Oliver T. Gutierrez, Praveen Thallapally, Shengqian Ma, B. P. McGrail, Guillaume Maurin, Radha K. Motkuri

Abstract

We report the first exploration of fluorocarbon adsorption performances using defect-containing covalent–organic frameworks (COFs). Exceptionally high fluorocarbon R134a equilibrium capacities and unique overall linear-shaped isotherms are attributed to the defective nature of the synthesized two-dimensional frameworks, namely COP-2 and COP-3. This contribution of additional capacity due to presence of large defects has been predicted and confirmed here by atomistic defective models built for both COFs. Analysis of R134a adsorption isotherms for varying defect-containing models with increasing free pore volumes shows direct correlation to higher fluorocarbon adsorption capacities. Combined with their high porosities, excellent reversibility, fast kinetics, and large operation window, these defective COFs are promising for adsorption-based cooling applications.

Citation

Angewandte Chemie-International Edition

Volume

60

Issue

33

Pub Type

Journals

Keywords

Metal Organic Framework, Porous Materials, Gas Adsorption, Refrigeration

Citation

Zheng, J. , Wahiduzzman, M. , Barpaga, D. , Trump, B. , Gutierrez, O. , Thallapally, P. , Ma, S. , McGrail, B. , Maurin, G. and Motkuri, R. (2021), Porous Covalent Organic Polymers for Efficient Fluorocarbon-Based Adsorption Cooling, Angewandte Chemie-International Edition (Accessed April 24, 2024)