Open AccessRelaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica
Author(s) -
V.I. Zarko,
В.М. Гунько
Publication year - 1996
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749601400507
Subject(s) - chemistry , molecule , adsorption , hydrogen bond , phase (matter) , chemical engineering , relaxation (psychology) , chemical physics , organic chemistry , psychology , social psychology , engineering
Analyses of dielectric spectra and theoretical simulation results demonstrate that the most probable sites for water cluster adsorption are the B-sites at the TiO 2 /SiO 2 (TS) phase boundary regions and the SiOH groups on the SiO 2 phase in TS. The amount of water on SiO 2 in TS is lower than for pure SiO 2 for the same content of water at the TiO 2 /SiO 2 and SiO 2 surfaces. The energy necessary for the rotation of a water molecule is a maximum for molecules linked via one electron-donor bond M←OH 2 and three hydrogen bonds with other water molecules.