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@ARTICLE{Sumner:34873,
author = {Sumner, A. L. and Menke, E. J. and Dubrowski, Y. and
Newberg, J. T. and Penner, R. M. and Hemminger, C. and
Wingen, L. M. and Brauers, T. and Finlayson-Pitts, B. J.},
title = {{T}he nature of water on surfaces of laboratory systems and
implications for heterogeneous chemistry in the troposphere},
journal = {Physical Chemistry Chemical Physics},
volume = {6},
issn = {1463-9076},
address = {Cambridge},
publisher = {RSC Publ.},
reportid = {PreJuSER-34873},
pages = {604 - 613},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {A number of heterogeneous reactions of atmospheric
importance occur in thin water films on surfaces in the
earth's boundary layer. It is therefore important to
understand the interaction of water with various materials,
both those used to study heterogeneous chemistry in
laboratory systems, as well as those found in the
atmosphere. We report here studies at 22 degreesC to
characterize the interaction of water with such materials as
a function of relative humidity from 0 - $100\%.$ The
surfaces studied include borosilicate glass, both untreated
and after cleaning by three different methods (water,
hydrogen peroxide and an argon plasma discharge), quartz,
FEP Teflon film, a self assembled monolayer of
n-octyltrichlorosilane (C8 SAM) on glass, halocarbon wax
coatings prepared by two different methods, and several
different types of Teflon coatings on solid substrates. Four
types of measurements covering the range from the
macroscopic level to the molecular scale were made: ( 1)
contact angle measurements of water droplets on these
surfaces to obtain macroscopic scale data on the
water-surface interaction, (2) atomic force microscopy
measurements to provide micron to sub-micron level data on
the surface topography, ( 3) transmission FTIR of the
surfaces in the presence of increasing water vapor
concentrations to probe the interaction with the surface at
a molecular level, and ( 4) X-ray photoelectron spectroscopy
measurements of the elemental surface composition of the
glass and quartz samples. Both borosilicate glass and the
halocarbon wax coatings adsorbed significantly more water
than the FEP Teflon film, which can be explained by a
combination of the chemical nature of the surfaces and their
physical topography. The C8 SAM, which is both hydrophobic
and has a low surface roughness, takes up little water. The
implications for the formation of thin water films on
various surfaces in contact with the atmosphere, including
building materials, soil, and vegetation, are discussed.},
keywords = {J (WoSType)},
cin = {ICG-II},
ddc = {540},
cid = {I:(DE-Juel1)VDB48},
pnm = {Chemie und Dynamik der Geo-Biosphäre},
pid = {G:(DE-Juel1)FUEK257},
shelfmark = {Chemistry, Physical / Physics, Atomic, Molecular $\&$
Chemical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000188433300018},
doi = {10.1039/b308125g},
url = {https://juser.fz-juelich.de/record/34873},
}