Photo-catalytic nanomaterial
A nanomaterial, photocatalytic technology, applied in nanotechnology, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as affecting customers' purchase of refrigerators and affecting the shelf life of food in refrigerators.
Active Publication Date: 2012-06-20
CHANGHONG MEILING CO LTD
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Problems solved by technology
[0002] Odors in the refrigerator purchase stage will affect customers' desire to buy refrigerators, and odors and bacteria in the use stage will affect the freshness period of food in the refrigerator
Method used
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Experimental program
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Effect test
Embodiment 1
[0024] Embodiment 1: Take by weighing 0.5 mass parts of nano-silver and 99.5 mass parts of nano-titanium dioxide, mix and make a solution, and after ultrasonic treatment, react in a hydrothermal kettle at 225°C for 2 hours, centrifugally wash and separate, and keep warm for 2 hours at 550°C. hours, a photocatalytic composite of nano-silver doped with nano-titanium dioxide is obtained, and the particle diameter of the composite is between 10nm and 60nm.
Embodiment 2
[0025] Embodiment 2: The preparation method is the same as that of Embodiment 1, the difference is that nano-silver takes 1.5 parts by mass, and nano-titanium dioxide takes 98.5 parts by mass.
Embodiment 3
[0026] Embodiment 3: The preparation method is the same as that of Embodiment 1, except that nano-silver takes 2.5 parts by mass, and nano-titanium dioxide takes 97.5 parts by mass.
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Abstract
The invention discloses a photo-catalytic nanomaterial, which is a mixture consisting of nano silver and nano titanium dioxide, wherein the mass ratio of the nano silver to the titanium dioxide is 0.5-10:90-99.5; a preparation method of the mixture comprises the following steps of: mixing the nano silver and the nano titanium dioxide in proportion to prepare solution; performing ultrasonic treatment; reacting in a hydrothermal kettle at 225 DEG C for 2 hours; performing centrifugal washing and separation; and preserving heat at 550 DEG C for 2 hours to obtain the photo-catalytic nanomaterial of the nano silver doped nano titanium dioxide. The mixture provided by the invention can be used in the aspects of bacteria removal and odor removal of a refrigerator, can be coated on the surface ofan inner member of the refrigerator, and can also be coated on other substrates to be mounted in a box body.
Description
Technical field: [0001] The invention relates to a photocatalytic nano material, in particular to a photocatalytic nano material which is applicable to a refrigerator and has the function of eliminating bacteria and deodorizing. Background technique: [0002] Odors in the refrigerator purchase stage will affect customers' desire to buy refrigerators, and odors and bacteria in the use stage will affect the freshness period of food in the refrigerator. Therefore, there is a great market prospect for refrigerators with functions of degerming and deodorizing. [0003] Photocatalytic technology is a new, efficient, energy-saving modern green environmental protection technology. Photocatalytic technology is the process of using light radiation to decompose pollutants into non-toxic or less toxic substances under the action of catalysts. [0004] The commonly studied photocatalytic materials are based on TiO 2 The representative metal oxide semiconductor has very good chemical st...
Claims
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IPC IPC(8): B01J23/50B01J23/06B01J23/72B01J21/10B82Y40/00A61L9/00A61L9/013A61L9/20A61L101/02A61L101/26A61L101/30
Inventor 胡海梅阚苗白莹张启花方波白连社李猛
Owner CHANGHONG MEILING CO LTD