Photostimulated Adsorption and Desorption of Oxygen on SnO2 and TiO2: Some New Experimental Data and a Phenomenological Model
Photostimulated Adsorption and Desorption of Oxygen on SnO2 and TiO2: Some New Experimental Data and a Phenomenological Model
复制标题
SnO2 和 TiO2 上氧气的光刺激吸附和解吸：一些新的实验数据和唯象模型
DOI：
10.7567/jjaps.2s2.315
复制
发表时间：
1974
期刊：
影响因子：
--
通讯作者：
F. T. A. G. Benedek
中科院分区：
文献类型：
--
作者：
M. Petrera;F. T. A. G. Benedek
We have measured the photoeffect on the oxygen adsorbed on SnO2 and TiO2 under different surface treatments and pressures in the range 10-4 to 10-1 Torr, with particular attention to the photoeffect inversion. In TiO2 at room temperature the photoeffect inversion pressure is found to be about 10-3 Torr, the photoadsorption and photodesorption occuring above and below this pressure, respectively. This inversion is interpreted as to be related to the transition from a gas-adsorbate equilibrium situation to a non-equilibrium situation, due to the pinch-off mechanism. In agreement with our interpretation, we found an hysteresis effect in the photoeffect vs pressure relation.
