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Inelastic neutron scattering study of confined surface water on rutile nanoparticles
Elinor C Spencer1, Andrey A Levchenko, Nancy L Ross
1Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
Abstract:
The vibrational density of states (VDOS) for water confined on the surface of rutile-TiO(2) nanoparticles has been extracted from low temperature inelastic neutron scattering spectra. Two rutile-TiO(2) nanoparticle samples that differ in their respective levels of hydration, namely TiO(2) x 0.37 H(2)O (1) and TiO(2) x 0.22 H(2)O (2) have been studied. The temperature dependency of the heat capacities for the two samples has been quantified from the VDOS. The results from this study are compared with previously reported data for water confined on anatase-TiO(2) nanoparticles.
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