Method for forming nano TiO2 light catalystic active agenbt coating on substrate

A technology of nano-titanium dioxide and activator, which is applied in metal material coating process, coating, device for coating liquid on the surface, etc., can solve the problems of difficult separation and recovery of photocatalysts, difficult to reuse, etc., and the method is simple and convenient. , The effect of the material coating is firm and the application prospect is broad.
CN1491753AInactive Publication Date: 2004-04-28INST OF CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF CHEM CHINESE ACAD OF SCI
Publication Date
2004-04-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention belongs to the field of coating technology, and is especially plasma spray process of forming nano TiO2 photocatalytic activator coating on substrate. The process includes utilizing the mixed gas of nitrogen or argon and hydrogen as work gas and nitrogen as powder feeding gas; cleaning the substrate, preheating at 200-600 deg.c, spraying nano TiO2 powder onto the surface of the substrate in a plasma spraying equipment to form nano TiO2 film; and sintering at 500-600 deg.c to cure the nano TiO2 film completely and obtain the nano TiO2 photocatalytic activator coating. The coating is firm, stable and high in photocatalytic activity. The present invention may be used widely in the carrying of photocatalyst and heat spraying of nano powder.
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Description

technical field

[0001] The invention belongs to the field of coating, and in particular relates to a method for forming a nano-titanium dioxide photocatalytic active agent coating on a base material by using a plasma spraying technology. Background technique

[0002] Due to the rapid advancement of science and technology, human production practices continue to expand, and the ensuing environmental pollution and destruction have also developed to a degree that threatens human existence. In recent years, the use of semiconductors as heterogeneous photocatalysis has been applied in the environmental field, especially in the treatment of organic pollutants in gas phase and water. Among the semiconductor materials that can be used for photocatalysis, titanium dioxide crystals have high photocatalytic activity, and it is also the most widely and deeply researched semiconductor metal oxide in photocatalytic applications. Under the irradiation of light, it c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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