Abstract
A comprehensive study of water adsorption and desorption on an ultrathin trilayer zirconia film by experimental and computational methods shows good agreement with data for H2O/ZrO2 powder material.
Highlights
Many technological applications of zirconia (ZrO2; pure or yttrium-doped, known as yttria-stabilized zirconia YSZ) involve interaction with water
We present a comprehensive study of water adsorption and desorption on an ultrathin trilayer zirconia film using temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), as well as scanning tunneling microscopy (STM) at different temperatures
Water adsorbs only weakly on many defect-free oxide surfaces; in ultra-high vacuum (UHV) it desorbs below room temperature (RT), typically at 160–250 K.8–10
Summary
Many technological applications of zirconia (ZrO2; pure or yttrium-doped, known as yttria-stabilized zirconia YSZ) involve interaction with water. Examples are internal steam reforming in solid oxide fuel cells,[1] catalysis,[2] gas sensors,[3] or applications as biocompatible material.[4] little is known about the interaction of water with ZrO2 surfaces on a fundamental level, which is mostly due to a lack of suitable samples. This is quite different for other oxides.[5,6,7] Water adsorbs only weakly on many defect-free oxide surfaces; in ultra-high vacuum (UHV) it desorbs below room temperature (RT), typically at 160–250 K.8–10.
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