Imperial College London
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ProfessorMartinBlunt

Faculty of Engineering, Department of Earth Science & Engineering

Chair in Flow in Porous Media
 
 
 
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Contact

 

+44 (0)20 7594 6500m.blunt Website

 
 
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Location

 

2.38ARoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wang:2024:10.1016/j.cis.2024.103122,
author = {Wang, YD and Kearney, LM and Blunt, MJ and Sun, C and Tang, K and Mostaghimi, P and Armstrong, RT},
doi = {10.1016/j.cis.2024.103122},
journal = {Advances in Colloid and Interface Science},
title = {In situ characterization of heterogeneous surface wetting in porous materials},
url = {http://dx.doi.org/10.1016/j.cis.2024.103122},
volume = {326},
year = {2024}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The performance of nano- and micro-porous materials in capturing and releasing fluids, such as during CO2 geo-storage and water/gas removal in fuel cells and electrolyzers, is determined by their wettability in contact with the solid. However, accurately characterizing wettability is challenging due to spatial variations in dynamic forces, chemical heterogeneity, and surface roughness. In situ measurements can potentially measure wettability locally as a contact angle - the angle a denser phase (e.g water) contacts solid in the presence of a second phase (e.g. hydrogen, air, CO2) - but suffer from difficulties in accurately capturing curvatures, contact areas, and contact loops of multiphase fluids. We introduce a novel extended topological method for in situ contact angle measurement and provide a comparative review of current geometric and topological methods, assessing their accuracy on ideal surfaces, porous rocks containing CO2, and water in gas diffusion layers. The new method demonstrates higher accuracy and reliability of in situ measurements for uniformly wetting systems compared to previous topological approaches, while geometric measurements perform best for mixed-wetting domains. This study further provides a comprehensive open-source platform for in situ characterization of wettability in porous materials with implications for gas geo-storage, fuel cells and electrolyzers, filtration, and catalysis.
AU  - Wang,YD
AU  - Kearney,LM
AU  - Blunt,MJ
AU  - Sun,C
AU  - Tang,K
AU  - Mostaghimi,P
AU  - Armstrong,RT
DO  - 10.1016/j.cis.2024.103122
PY  - 2024///
SN  - 0001-8686
TI  - In situ characterization of heterogeneous surface wetting in porous materials
T2  - Advances in Colloid and Interface Science
UR  - http://dx.doi.org/10.1016/j.cis.2024.103122
UR  - https://www.ncbi.nlm.nih.gov/pubmed/38513432
UR  - https://www.sciencedirect.com/science/article/pii/S0001868624000459?via%3Dihub
UR  - http://hdl.handle.net/10044/1/110568
VL  - 326
ER  -
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