Photostimulated reactions at the surface of wide band-gap metal oxides (ZrO2 and TiO2): interdependence of rates of reactions on pressure-concentration and on light intensity
Article Abstract:
Research was conducted to examine the photostimulated reactions at the surface of wide band-gap metal oxides such as TiO2 and ZrO2. Specifically, the photostimulated adsorption of oxygen on ZrO2 upon illumination with UV light and its postphotostimulated photoadsorption on irradiation with visible light were investigated. Results indicate that the proposed photoadsorption mechanism can be expanded to photocatalyzed oxidative reactions of phenol in irradiated aqueous TiO2 dispersions.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Effect of surface photoreactions on the photocoloration of a wide band gap metal oxide: Probing whether surface reactions are photocatalytic
Article Abstract:
The study was aimed at examining the effect(s) of surface photochemical reactions involving H(sub 2), O(sub 2), NH(sub 3), and CO(sub 2) on the photocoloration of ZrO(sub 2) in particular, and metal oxides in general. The effect of a nonphotocatalytic reaction occurring on the surface of an irradiated wide band gap metal oxide is seen as the influence of photosimulated adsorption on the photocoloration of the metal oxide specimen.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Mechanistic studies of the formation of different states of oxygen on irradiated ZrO2 and the photocatalytic nature of photoprocesses from determination of turnover numbers
Article Abstract:
The results of a mechanistic study into the formation of various states of oxygen produced over irradiated zirconia (ZrO2) under various conditions. The photooxiodation of hydrogen in the presence of molecular oxygen over irradiated powdered ZrO2 as a model reaction is examined.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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