Microscopic observation of TiO2 photocatalysis using scanning electrochemical microscopy
Article Abstract:
Scanning electrochemical microscopy was used in examining the photocatalysis in a TiO2-indium-tin oxide (ITO) composite film. The study used an ITO glass substrate with one side coated with a TiO2 film with the other side of the ITO exposed in a solution containing 5mM K4Fe(CN)6 and O.1 M K2SO4. Results indicate that both oxidation and reduction reaction occur simultaneously on the illuminated unbiased TiO2 photocatalyst film in the TiO2-ITO composite. It was also observed that ferrocyanide was photooxidized when the microelectrode was placed at a relatively large distance from the TiO2 portion of the illuminated surface.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Photoelectrochemical reduction of CO2 in a high-pressure Co2+methanol medium at p-type semiconductor electrodes
Article Abstract:
A study was conducted to analyze photoelectrochemical CO2 reduction in a high-pressure CO2 + methanol medium using the p-type semiconductor electrodes p-InP, p-GaAs, and p-Si. The semiconductor photocathode was illuminated by a 500-W xenon lamp while the gas and liquid-phase products were analyzed using gas chromatography. Results indicated that CO2 can be photoelectrochemically minimized to CO at potentials of at least 0.5 V more positive than a representative metallic electrode.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Autoxidation of acetaldehyde initiated by TiO2 photocatalysis under weak UV illumination
Article Abstract:
A study was conducted to analyze the photocatalytic decomposition efficiency of gas-phase acetaldehyde by a titanium dioxide thin film under weak ultraviolet illumination. The anatase thin films were made on soda lime glass. The amount of adsorbed acetaldehyde on the samples were determined based on the gas-phase acetaldehyde concentration. In addition, the acetaldehyde adsorption isotherm was obtained at room temperature.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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- Abstracts: Metal particle growth during glucose hydrogenation over Ru/SiO2 evaluated by X-ray absorption spectroscopy and electron microscopy
- Abstracts: Observation of three growth mecbanisms in self-assembled monolayers. Comparative investigations of the packing and ambient stability of self-assembled monolayers of alkanethiols on gold and silver by friction force microscopy
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