Acetone chemistry on oxidized ad reduced TiO2(110)

Article Abstract:

The chemistry of acetone on the oxidized and reduced surfaces of TiO(sub 2)(110) is examined by using temperature programmed desorption (TPD) a high-resolution electron energy-loss spectroscopy (HREELS). The reduced surface is prepared with about seven percent oxygen vacancy sites by annealing in ultrahigh vacuum at 850 K and the oxidized surface is prepared by exposure of the reduced surface to molecular oxygen at 95 K.

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Photooxidation of acetone on TiO2(110): Conversion to acetate via methyl radical ejection

Article Abstract:

Acetone photooxidation on TiO2(110) is shown to involve a thermal reaction between acetone and an adsorbed oxygen species to form an acetone-oxygen complex. This complex photodecomposes via photogenerated charge carriers in the substrate through a mechanism involving methyl radical ejection from the surface and conversion of the complex to surface bound acetate.

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Comment on 'electron source in photoinduced hydrogen production pt-supported TiO(sub 2) particles'

Article Abstract:

The use of X-ray diffraction data (XRD) and ex-situ X-ray photoelectron spectroscopy (XPS) in photochemical reaction oxidized Ti(super 4+) in the photocatalyst to Ti(super 5+) is investigated. Different views on oxidation of Ti(super 4+) to a solid oxide containing Ti(super 5+) on not being physically realistic are discussed.

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