Sample Cell for Spectroscopic Studies
to Vacuum Line
IR Window
1 cm
Insulating Substrate
Cooling Bath Coil
Infrared Spectra of the Different Phases of Water
4000 3800 3600 3400 3200 3000 2800
solid
liquid
vapor
Abs
orba
nce
Wavenumber (cm-1)
FLATVAP_B downingwater_B WarrenIce_C
Uptake and reaction of gases in liquids
Liquid
Gas Phase
Gas phase diffusion
Bounce off
UptakeDiffusion into bulk
Reaction at interface
Products
Products
Evaporation
Reaction
Undergraduate Researchers:
Kurt van Vloten T.J. Jayasundera Mark D’Agostino Tom DoyleDevon Passno Jennifer Rudberg Sara Yazdi Melinda Furse
Funding:
The Research CorporationPRF-ACSCAS - UMBDepartment of Chemistry
Water Thin Films on Magnesium Oxide
4000 3800 3600 3400 3200 3000 2800 2600
0.005
T = 20oC
Abs
orba
nce
Wavenumber (cm-1)
17 Torr - 5.8 ML 15 Torr - 3.6 ML 11 Torr - 2.5 ML 5 Torr - 1.9 ML 1 Torr - 1.2 ML .1 Torr - 0.7 ML
0 2 4 6 8 10 12 14 16 18 20 22
0
1
2
3
4
5
6
25oC
(H
2O /
sur
face
ato
m)
Pressure (Torr)
adsorption desorption