摘要:
Provided is a means which is capable of improving the durability of a hydrophilic member that has a photocatalyst layer containing tungsten oxide. The hydrophilic member includes a substrate, a first intermediate layer which is disposed on the substrate and contains a metal oxide that contains an element of Group 4, Group 6, Group 13 or Group 14 of the periodic table, and a photocatalyst layer which is disposed on the first intermediate layer and contains tungsten oxide.
摘要:
Methods and systems for catalyzing the low temperature formation of silicon nitride. The methods and systems utilize catalytically reactive silica particles that are suspended by moving air within a reaction chamber and which are maintained at a temperature sufficient to cause the suspended silica particles to become catalytically reactive in the presence of carbon and nitrogen gas. Typically, the reaction chamber is maintained at a temperature in a range from about 150 °C to about 500 °C. Moisture is generally provided by the organic matter, although additional moisture may be introduced into the reaction chamber in order to maintain reactivity of the silica particles. The silicon nitride is preferably deposited onto the surface of a metallic substrate, which might be located either within or externally to the reaction chamber. Depending on the ratio of oxygen to nitrogen provided within the reaction chamber, silicon nitride or a mixture of silicon nitride and silicon oxynitride will be produced.
摘要:
A photocatalyst dispersion liquid comprises a dispersion of titanium oxide photocatalyst particles and tungsten oxide photocatalyst particles in a dispersion medium; the surfaces of the titanium oxide photocatalyst particles and the tungsten oxide photocatalyst particles have the same charge polarity, thus the titanium oxide photocatalyst particles and the tungsten oxide photocatalyst particles do not aggregate easily and there is no solid-liquid separation.
摘要:
A method of treating contaminated air, gas and surfaces is accomplished through the nebulization of gas and/or liquid oxidants through a field of electromagnetic radiation or sonic waves. The contaminated gas and/or liquid streams are blended with gaseous and/or liquid oxidants by the nebulizer and directly injected in the energy field. Free radicals produced from oxidants in the presence of the energy field instantaneously oxidize a large effective surface area of the contaminated media. Surfaces are treated more efficiently with the energy field situated directly above and parallel to but not on the surface; a high-frequency energy field may be used to create a large concentration of free radicals without damaging the surface in a collimated beam of the field situated parallel to the surface. A catalyst may be employed at the tip (i.e. discharge orifices of gas and/or liquid) of the nebulizer or blended into the nebulized cloud to increase the formation of free radicals. The method may also be used to carry out a reduction instead of an oxidation reaction.
摘要:
A ceramic packing element comprising a monolith structure having a generally block shape and having plurality of equally spaced parallel openings therein extending the length of the block where the openings have generally straight sides and corners which are rounded. The corners are substantially radiused to produce the rounded corners. For example, where the openings in the element are between 1.8 and 6.5 mm, the radius will be between 0.3 and 1.8 mm. The block element will have between 20 to 60 cells by 20 to 60 cells totaling between 400 to 3600 cell elements.
摘要:
The present invention addresses organic pollutant removal from enclosed environments such as a room or within a vehicle. A photocatalytic semiconductor coating located on the interior surface of a window or windshield is illuminated with UV light, thereby dissociating water on the surface thereof to form hydroxyl radicals. These hydroxyl radicals then oxidize organic pollutants adsorbed to the coating.