Titanium oxide-containing material and process for preparing the same

Abstract

A titanium oxide-containing material having a surface plated with titanium oxide. It is prepared by dissolving titanium fluoride (such as titanium tetrafluoride) in an amount of 2.0 % owf in water, immersing a raw material in the obtained aqueous solution to treat the material with the aqueous solution at room temperature for 30 min, and adding a 0.5 : 1 : 1 (on a weight basis) mixture of boric acid, citric acid, and DL-malic acid in an amount of 0.5 % owf to the aqueous solution to treat the material with the aqueous solution at 50 DEG C for 30 min, followed by washing with water. The raw materials usable herein include synthetic fibers, metals, glass, and woods, and may be in the form of sheet, plate, fiber, rod, or the like. Introduction of a noble metal, such as gold or silver, in addition to titanium oxide, into the surface of the material enables the acceleration of the photocatalytic action of titanium oxide.

Description

technical field [0001] The present invention relates to a material containing titanium oxide, which has various functions such as deodorization, antifouling and antibacterial due to the photocatalytic action of titanium oxide, and a method for producing the same. Background technique [0002] The fact that titanium oxide has a photocatalytic action by which organic matter can be decomposed has been known in the past. The mechanism of decomposition of organic substances due to this photocatalytic action is as follows. That is, when light such as visible light or ultraviolet light is irradiated on titanium oxide, it will cause charge decomposition and generate electrons and holes with strong oxidizing power. This hole reacts with water vapor or oxygen in the air and produces OH groups or O 2 - Such a reactive core can instantly decompose the organic matter existing around it. Now, using this photocatalysis, titanium oxide can be used in environmental ...

AI Technical Summary

Problems solved by technology

However, if the method of incorporation is followed, it is difficult for titanium oxide to be carried on the surface of the material, so that various functions such as antibacterial, deodorizing and antifouling cannot be effectively exerted.

Therefore, in order to make the necessary amount of titanium oxide exist on the surface of the material, a large amount of titanium oxide must be doped. As a result, not only the characteristics of the material are affected, but also the cost is disadvantageous.

In addition, materials made of organic substances such as synthetic fibers and resins tend to degrade the titanium oxide-carrying part, which often causes the titanium oxide to fall off.