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Method of forming metal composite titanium dioxide nano particle film on ceramic surface

A titanium dioxide and metal composite technology, applied in the field of nanomaterials, can solve problems such as film cracking, achieve simple methods, good photodegradation efficiency, and reduce equipment investment

Inactive Publication Date: 2005-04-20
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This crystal phase transformation during sintering easily leads to cracking of the film

Method used

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  • Method of forming metal composite titanium dioxide nano particle film on ceramic surface
  • Method of forming metal composite titanium dioxide nano particle film on ceramic surface
  • Method of forming metal composite titanium dioxide nano particle film on ceramic surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Dissolve 22 parts by weight of titanium tetrachloride in 78 parts by weight of ice water and stir evenly to obtain a transparent and clear aqueous solution of titanium tetrachloride; under rapid stirring, add 20 parts by weight of 1 part of ferric chloride is dissolved in 99 parts by weight of deionized water to form a solution. After continuous stirring for several minutes, add 40 parts of deionized water, stir evenly, and transfer it to a medium-pressure container lined with polytetrafluoroethylene. In the kettle, keep the temperature at 150°C for 2 hours, then cool to room temperature naturally. Pour off the supernatant, wash the lower precipitate with deionized water, and collect the supernatant during the centrifugal washing process to obtain a titanium dioxide nano-sol complexed with iron ions.

[0054] Take 30 parts of the above iron ion composite titanium dioxide nano sol, add 68 parts of water and 2 parts of polyethylene glycol surfactant under stirring, after ...

Embodiment 2

[0056] Dissolve 60 parts by weight of titanium tetrachloride in 40 parts by weight of ice water and stir evenly to obtain a transparent and clear aqueous solution of titanium tetrachloride; under rapid stirring, add 10 parts by weight of 1 part of copper nitrate was dissolved in 99 parts by weight of the solution generated in deionized water. After continuing to stir for several minutes, 76 parts of deionized water was added, stirred evenly, and transferred to an autoclave lined with polytetrafluoroethylene. Keep the temperature at 100°C for 2 hours, then cool down to room temperature naturally. The supernatant was poured off, and the lower precipitate was washed with deionized water. During the centrifugal washing and precipitation process, the supernatant was collected to obtain a titanium dioxide sol complexed with copper ions.

[0057] Take 89 parts of the above-mentioned copper ion composite titanium dioxide nano-sol solution, add 10 parts of deionized water and 1 part o...

Embodiment 3

[0059] Dissolve 22 parts by weight of titanium tetrachloride in 78 parts by weight of ice water, and stir evenly to obtain an aqueous solution of titanium tetrachloride; under vigorous stirring, add 1 part by weight of 1 part of nitric acid to 45 parts by weight of the above aqueous solution of titanium tetrachloride The solution generated by dissolving silver in 99 parts by weight of deionized water was continuously stirred for several minutes, then 50 parts of deionized water was added thereto, stirred evenly, and transferred into a medium-pressure autoclave lined with polytetrafluoroethylene, 250 ℃ for 1 hour, and naturally cooled to room temperature. The supernatant was poured off, the lower precipitate was centrifuged and washed, and the supernatant was collected during the washing process to obtain a titanium dioxide sol complexed with silver ions.

[0060] Take 50 parts of the above-mentioned silver ion composite titanium dioxide nano-sol solution, add 50 parts of deion...

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Abstract

The invention belongs to the technical field of nanometer materials, in particular to a method for forming a metal composite titanium dioxide nanoparticle film on a ceramic surface. (1) Under stirring, deionized water and / or surfactant can be added to 20 to 100 parts of metal composite titanium dioxide nanoparticle sol, and stirred evenly; (2) The sol of step (1) is sprayed on the ceramic surface, Dry in the air, and then dry at 50-300 ° C for 10 minutes to 5 hours; or spray the sol of step (1) on the surface of the biscuited ceramics, and dry in the air; (3) apply the above metal-coated titanium dioxide nanoparticles The ceramic product of the membrane is kept at a temperature of 300-1300° C. for 10 minutes to 10 hours. The metal-composite titanium dioxide nanoparticle film with light purification function formed on the ceramic surface showed good photodegradation efficiency, and also showed good antibacterial efficiency under indoor natural light or low ultraviolet light intensity.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a method for forming a series of metal composite titanium dioxide nanoparticle films with light purification functions capable of sterilizing, preventing mildew, deodorizing, degrading organic pollutants, and decomposing harmful gases on ceramic surfaces. Background technique [0002] At present, the use of titanium dioxide photocatalysts for environmental purification has attracted widespread attention, and a lot of research work has been carried out on the preparation of titanium dioxide photocatalysts, the improvement of photocatalytic activity, and the immobilization of photocatalysts. Reports in this regard can be found on page 2180 of Volume 8 of "Chemical Materials" in 1996 (Vinodgopal, K.; Bedja, I., Kamat, P.V., Chem.Mater., 1996, 8, 2180) and "Journal of Physical Chemistry" 1994, Vol. 98, p. 13669 (Choi, W., Termin, A., Hoff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J23/40B01J23/70B01J37/02B05D5/00C04B41/85
Inventor 刘春艳刘云张志颖
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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