Abstract:We utilized the momentum transfer (Q)-dependence of quasi-elastic neutron scattering (QENS) to measure the dynamics of water and ethanol confined in graphene oxide (GO) powder or membranes at different temperatures and in different orientations. We found reduced diffusivities (up to 30% in the case of water) and a depression of dynamic transition temperatures. While water showed near Arrhenius behavior with an almost bulklike activation barrier in a temperature range of 280−310 K, the diffusivity of ethanol sh… Show more
Quasielastic neutron scattering (QENS) is an experimental technique that can measure diffusivity parameters, such as diffusion jump rate and length, of chemical species (molecules, ions, and segments) at atomic and...
Quasielastic neutron scattering (QENS) is an experimental technique that can measure diffusivity parameters, such as diffusion jump rate and length, of chemical species (molecules, ions, and segments) at atomic and...
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