Determination of the Thermodynamic Properties of the Hydration Layers on Porous Alumina Nanoparticles


INS is an ideal means of probing the complete vibrational density of states of water adsorbed on the surface of metal oxide nanoparticles with minimal interference from the underlying particle. From the VDOS it is possible to calculate the isochoric heat capacity and vibrational entropy of the nanoparticle hydration layers. We propose to collect high-resolution TOSCA data over the 0-200meV energy range to enable us to evaluate the thermodynamic properties of water confined on the surface of porous alumina nanoparticles that are 3nm in size. We will collect data on four alumina samples with varying pore sizes (3, 10, 20 and 30nm) that have water contents up to 15 wt.-% and on a dehydrated alumina sample with 30nm pores. These data will permit us to study the influence of pore size on the thermodynamic properties of water confined on the surface of alumina nanoparticles.

Metadata Access
Creator Professor Stewart Parker; Dr Alexander Kolesnikov; Professor Nancy Ross; Dr Elinor Spencer
Publisher ISIS Neutron and Muon Source
Publication Year 2014
Rights CC-BY Attribution 4.0 International;
OpenAccess true
Contact isisdata(at)
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2011-06-03T08:12:22Z
Temporal Coverage End 2011-06-06T14:14:31Z