Charge transfer type catalyst, functional oxidation/reduction material utilizing the catalyst, and material containing charge transfer type catalyst

Abstract

The invention provides a charge transfer catalyst capable of exhibiting an oxidation catalyst and reduction catalyst function even if an oxidation activating agent and a reduction activating agent are not adopted, an oxidation / reduction functional material utilizing the catalyst and a constitution of a charge transfer catalyst-containing material. The charge transfer catalyst is used for antifouling, antibacterial and deodorized purpose and formed by a mixture of a composite oxide crystal comprising an electron donating element, an electron accepting element, an electron carrier element for promoting transfer of an electron from the electron donating element to the electron accepting element, a reduction center element for performing a reduction reaction by the electron transferred to the electron accepting element and an oxidation center element for performing an oxidation reaction by a positive hole of the electron donating element generated by transfer of the electron; or a composite oxide crystal comprising the electron donating element, the electron accepting element, the electron carrier element and the reduction center element, and a composite oxide crystal mixture comprising the electron donating element, the electron accepting element, the electron carrier element and the oxidation center element.

Description

Technical field [0001] The present invention relates to a charge transfer (charge transfer) type catalyst formed of a composite oxide that undergoes an oxidation reaction and / or a reduction reaction by charge transfer in a catalyst, a redox functional material using the catalyst, and a charge transfer type The material of the catalyst. Background technique [0002] It is known that in the past, a layer having a photocatalytic function (for example, a layer containing anatase titanium oxide) is formed on the surface of a substrate, and the photocatalyst is photoexcited to hydrophilize the surface of the layer to impart antifouling properties. In this photocatalytic method, the presence of ultraviolet rays and water are necessary conditions, but the effect is not constant depending on environmental conditions such as weather, season, day and night, and the orientation of buildings. For example, when the weather is good, the ultraviolet rays are strong, but there is no moisture, an...

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Problems solved by technology

[0008] However, in the structure of the above-mentioned prior application invention, the oxidation activator using lithium and the reduction activator using yttrium are indispensable, so the manufacturing process is complicated and the crystal structure is complicated.