Iron phosphate-wrapped photocatalytic nano titanium dioxide powder and application thereof

A nano-titanium dioxide, titanium dioxide technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes and other directions, can solve problems such as large limitations, and achieve the effects of easy mixing, wide application and convenient use

Inactive Publication Date: 2014-02-05
SKSHU PAINT
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of photocatalytic powder only involves calcium salt coating, and for so

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1: Pour 100g of titanium dioxide (P25-a highly dispersed titanium dioxide produced by the AEROSIL200 process with an average particle size of 21nm) into 200mL of water and add Na 2 CO 3 Control the pH to 8.0, and add 2g of polyvinylpyrrolidone (PVP-from China National Pharmaceutical), and fully shake and disperse.

[0040] Dissolve 200 g of ferric nitrate tetrahydrate and 400 g of ammonium dihydrogen phosphate in 500 mL of distilled water, stir well, add 5 g of polyvinylpyrrolidone (PVP), and shake ultrasonically; then add the resulting titanium dioxide solution to mix, and adjust the pH to 8.0 with lye. Stir and heat to obtain gel; after drying and grinding, the gel is pyrolyzed at 400°C for 2h and then calcined at 500°C under the protection of nitrogen atmosphere.

[0041] The liquid acetaldehyde method was used as the degradation marker to determine the photocatalytic degradation of small-molecule pollutants by the photocatalytic nano-titanium dioxide powder coated...

Example Embodiment

[0045] Example 2: By implementing the same procedure as in Example 1, except that sodium hexametaphosphate (China National Medicines) was used as an anionic surfactant, all other conditions were kept the same to obtain a light yellow powder for photocatalysis. The resulting photocatalytic powder can completely degrade acetaldehyde in 2 hours, and the methyl orange becomes colorless at the same time.

[0046] It is mixed and extruded with the plastic component polyethylene terephthalate resin to obtain a strip containing 30% of the photocatalytic powder, which is irradiated with an ultraviolet lamp, and the resin will not change color or age for a day. It is used in the coating system water-soluble aldol resin solution (produced by Dow Company) to make a coating system containing 30% photocatalytic powder. It is irradiated with a 246nm ultraviolet lamp, and the resin will not change color or age after a day.

Example Embodiment

[0047] Example 3: By implementing the same procedure as in Example 1, except that 15nm titanium dioxide (provided by Fuzhou University) particles were used, and all other conditions were kept the same, the photocatalytic powder was obtained. The obtained photocatalytic powder is used to degrade acetaldehyde or methyl orange. The measurement results show that the synthesized photocatalytic powder can completely degrade acetaldehyde in 2 hours, and the methyl orange becomes colorless at the same time.

[0048] It is mixed and extruded with the plastic component polyethylene terephthalate resin to obtain a strip containing 30% of photocatalytic powder, which is irradiated with a 246nm ultraviolet lamp, and the resin changes color and ages within a day. It is used in the coating system water-soluble aldol resin solution (produced by Dow Company) to make a coating system containing 30% photocatalytic powder. It is irradiated with a 246nm UV lamp, and the resin will not change color or ...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides photocatalytic yellow powder capable of being applied to environment purifying. Each titanium dioxide particle is wrapped by iron phosphate particles, and the degrading function of the titanium dioxide to a macromolecule organic matter is selectively shielded or weakened. The photocatalytic solid powder can be extensively applied to various organic polymer setting products, especially organic fibers or plastic products or colored paint.

Description

technical field [0001] The invention relates to a photocatalytic powder applicable to environmental purification and a production method thereof. The powder can be used to remove odors, harmful substances or pollutants in the air, especially small molecular substances such as benzene and formaldehyde; the powder At the same time, it can be used in drainage or water purification to remove harmful substances and bacteria in water. The powder is particularly suitable for incorporation into organic fibers or plastics by various physical means such as kneading or embedding or mixing etc. Background technique [0002] Air pollution has become an environmental problem that is widely concerned by countries all over the world. The main pollutants are sulfides, nitrogen oxides, formaldehyde and benzene and other volatile organic compounds. The methods of pollution control are summarized as follows: adsorption method, ozone purification method, chemical reaction method, plant purifica...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J27/185B01D53/86C02F1/30C02F1/32C08L67/02C08K9/10C09D7/12
Inventor 洪杰胡必忠刘晓彬
Owner SKSHU PAINT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap