Title: Characteristic Features of Water Dynamics in Restricted Geometries Investigated with Quasi-Elastic Neutron Scattering

Journal Article · · Chemical Physics
 [1];  [1];  [1];  [1];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Ames Lab., Ames, IA (United States)

Understanding the molecular behavior of water in spatially restricted environments is important to better understanding its role in many biological, chemical and geological processes. Here we examine the translational diffusion of water confined to a variety of substrates, from flat surfaces to nanoporous media, in the context of a recently proposed universal scaling law (Chiavazzo 2014) [1]. Using over a dozen previous neutron scattering results, we test the validity of this law, evaluating separately the influence of the hydration amount, and the effects of the size and morphology of the confining medium. Additionally, we investigate the effects of changing instrument resolutions and fitting models on the applicability of this law. Finally, we perform quasi-elastic neutron scattering measurements on water confined inside nanoporous silica to further evaluate this predictive law, in the temperature range 250≤T≤290 K.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1261371
Journal Information:
Chemical Physics, Journal Name: Chemical Physics Vol. 465-466; ISSN 0301-0104
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (12)

Structure and Dynamics of Confined C-O-H Fluids Relevant to the Subsurface: Application of Magnetic Resonance, Neutron Scattering, and Molecular Dynamics Simulations journal June 2017
Computational Insights into Materials and Interfaces for Capacitive Energy Storage journal April 2017
Soft biomimetic nanoconfinement promotes amorphous water over ice journal April 2019
In Vivo Water Dynamics in Shewanella oneidensis Bacteria at High Pressure journal June 2019
Insights into the thermal and chemical stability of multilayered V 2 CT x MXene journal January 2019
Microscopic dynamics in room-temperature ionic liquids confined in materials for supercapacitor applications journal January 2020
Vibrational dynamics of confined supercooled water journal June 2019
Thermal transport phenomena in nanoparticle suspensions journal October 2016
Influence of metal ions intercalation on the vibrational dynamics of water confined between MXene layers journal November 2017
Cation Molecular Structure Affects Mobility and Transport of Electrolytes in Porous Carbons journal January 2019
Nano-metering of Solvated Biomolecules Or Nanoparticles from Water Self-Diffusivity in Bio-inspired Nanopores journal October 2019
Soft biomimetic nanoconfinement promotes amorphous water over ice text January 2019

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