Adsorption at Nanoconfined Solid-Water Interfaces

Reactions at solid-water interfaces play a foundational role in water treatment systems, catalysis, and chemical separations, and in predicting chemical fate and transport in the environment. Over the last century, experimental measurements and computational models have made tremendous progress in c...

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Bibliographic Details
Published in:Annual review of physical chemistry 2023-04, Vol.74 (1), p.169-191
Main Authors: Ilgen, Anastasia G, Leung, Kevin, Criscenti, Louise J, Greathouse, Jeffery A
Format: Article
Language:English
Subjects:
Adsorption
Catalysis
Chemical properties
Chemical separation
Confinement
nanoconfinement
nanopore
Slits
Solid surfaces
speciation
Surface chemistry
surface complexation
Water treatment
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Summary:Reactions at solid-water interfaces play a foundational role in water treatment systems, catalysis, and chemical separations, and in predicting chemical fate and transport in the environment. Over the last century, experimental measurements and computational models have made tremendous progress in capturing reactions at solid surfaces. The interfacial reactivity of a solid surface, however, can change dramatically and unexpectedly when it is confined to the nanoscale. Nanoconfinement can arise in different geometries such as pores cages (3D confinement), channels (2D confinement), and slits (1D confinement). Therefore, measurements on unconfined surfaces, and molecular models parameterized based on these measurements, fail to capture chemical behaviors under nanoconfinement. This review evaluates recent experimental and theoretical advances, with a focus on adsorption at solid-water interfaces. We review how nanoconfinement alters the physico-chemical properties of water, and how the structure and dynamics of nanoconfined water dictate energetics, pathways, and products of adsorption in nanopores. Finally, the implications of these findings and future research directions are discussed.
ISSN:0066-426X
1545-1593
DOI:10.1146/annurev-physchem-083022-030802