Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9594634 | Surface Science | 2005 | 11 Pages |
Abstract
Transmission Fourier transform infrared spectroscopy (FTIR) is used to investigate water adsorbed on the (1 0 0) face of MgO under ambient conditions. From these measurements, we find that water reversibly adsorbs to MgO(1 0 0) creating liquid-like layers at temperatures ranging from â10 °C to 40 °C with slight hysteresis seen during a complete adsorption/desorption cycle. The adsorption isotherms of water on MgO(1 0 0), throughout the entire temperature range sampled, resemble a typical BET plot, which coupled with the fact that IR absorption due to the OH stretch of the adsorbed water does not change as a function of coverage, suggests that the layer grows in via three-dimensional island formation. Thermodynamic analysis indicates three distinct regions of water adlayer growth.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Michelle Foster, Mark D'Agostino, Devon Passno,