Turning Molecular Springs into Nano-Shock Absorbers: The Effect of Macroscopic Morphology and Crystal Size on the Dynamic Hysteresis of Water Intrusion-Extrusion into-from Hydrophobic Nanopores

Published

June 15, 2022

Author(s)

Pawel Zajdel, David Madden, Robin Babu, Diego Mirani, Nikolay Tsyrin, Luis Bartolome, Eder Amayuelas, David Fairen-Jimenez, Alexander Lowe, Miroslaw Chorazewski, Juscelino Leao, Craig Brown, Markus Bleuel, Victor Stoudenets, Maria Echeverria, Francisco Bonilla, Giulia Grancini, Simone Meloni, Yaroslav Grosu

Abstract

Controlling the pressure at which liquids intrude (wet) and extrude (dry) into/from nanopore is of paramount importance for a broad range of applications, such as energy conversion, catalysis, chromatography, separation, ionic channels, and many more. To tune these characteristics, one typically acts on the chemical nature of the system or pore size. In this work, we propose an alternative route for controlling both intrusion and extrusion pressures via proper arrangement of the grains of nanoporous material. To prove the concept, dynamic intrusion-extrusion cycles for powdered and monolithic ZIF-8 Metal-Organic Framework were conducted by means of water porosimetry and in operando neutrons scattering. We report a drastic increase in intrusion-extrusion dynamic hysteresis when going from a fine powder to a dense monolith configuration, transforming an intermediate performance of ZIF-8 + water system (poor molecular spring) into a desirable shock-absorber with more than one order of magnitude enhancement of dissipated energy per cycle. The obtained results are supported by MD simulations and pave the way for an alternative methodology of tuning intrusion-extrusion pressure using solely macroscopic arrangement of nanoporous material.

Citation

ACS Applied Materials and Interfaces

Volume

14

Issue

23

Pub Type

Journals

Download Paper

https://doi.org/10.1021/acsami.2c04314

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Keywords

energy storage, molecular spring, neutron diffraction, ZIF

Citation

Zajdel, P. , Madden, D. , Babu, R. , Mirani, D. , Tsyrin, N. , Bartolome, L. , Amayuelas, E. , Fairen-Jimenez, D. , Lowe, A. , Chorazewski, M. , Leao, J. , Brown, C. , Bleuel, M. , Stoudenets, V. , Echeverria, M. , Bonilla, F. , Grancini, G. , Meloni, S. and Grosu, Y. (2022), Turning Molecular Springs into Nano-Shock Absorbers: The Effect of Macroscopic Morphology and Crystal Size on the Dynamic Hysteresis of Water Intrusion-Extrusion into-from Hydrophobic Nanopores, ACS Applied Materials and Interfaces, [online], https://doi.org/10.1021/acsami.2c04314, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933799 (Accessed April 29, 2024)