TY - JOUR
T1 - Water-oxygen interplay on tin dioxide surface
T2 - Implication on gas sensing
AU - Koziej, Dorota
AU - Bârsan, Nicolae
AU - Weimar, Udo
AU - Szuber, Jacek
AU - Shimanoe, Kengo
AU - Yamazoe, Noboru
PY - 2005/7/20
Y1 - 2005/7/20
N2 - Resistance measurements and direct spectroscopic investigations were used to monitor the surface reaction path between oxygen and water at the surface of SnO2. The experiments were carried out at high sensor operation temperature (330 and 400 °C) and at a constant background of water vapour. We found that there is a significant interaction between adsorbed oxygen ions and water vapour, which results in formation of terminal hydroxyl groups on tin dioxide surface. This observation is an evidence of water-oxygen interaction and so brings a new insight to the mechanistic modelling of the sensing with tin dioxide based sensors.
AB - Resistance measurements and direct spectroscopic investigations were used to monitor the surface reaction path between oxygen and water at the surface of SnO2. The experiments were carried out at high sensor operation temperature (330 and 400 °C) and at a constant background of water vapour. We found that there is a significant interaction between adsorbed oxygen ions and water vapour, which results in formation of terminal hydroxyl groups on tin dioxide surface. This observation is an evidence of water-oxygen interaction and so brings a new insight to the mechanistic modelling of the sensing with tin dioxide based sensors.
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U2 - 10.1016/j.cplett.2005.05.107
DO - 10.1016/j.cplett.2005.05.107
M3 - Article
AN - SCOPUS:21644463060
SN - 0009-2614
VL - 410
SP - 321
EP - 323
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -