Porous silicon dioxide gel particles loaded with graphite-phase carbon nitride, paper with porous silicon dioxide gel particles loaded with graphite-phase carbon nitride and production method of porous silicon dioxide gel particles loaded with graphite-phase carbon nitride

A technology of porous silica and graphite phase carbon nitride, applied in chemical instruments and methods, catalyst activation/preparation, separation methods, etc., can solve the problems that formaldehyde molecules cannot be emitted, the effect of removing formaldehyde is not good, and formaldehyde molecules overflow , to achieve the effect of cheap raw materials, mild preparation conditions and uniform pore distribution

Active Publication Date: 2019-09-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the poor air permeability of traditional wallpaper, it is used as a skeleton carrier to disperse g-C 3 N 4 Not only can the overflowing formaldehyde molecules pass through the wallpaper and g-C smoothly 3 N 4 reaction, because the pore structure is blocked by the catalyst, the formaldehyde molecules cannot be released for a long time, and formaldehyde molecules still overflow for several years or eve...

Method used

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  • Porous silicon dioxide gel particles loaded with graphite-phase carbon nitride, paper with porous silicon dioxide gel particles loaded with graphite-phase carbon nitride and production method of porous silicon dioxide gel particles loaded with graphite-phase carbon nitride
  • Porous silicon dioxide gel particles loaded with graphite-phase carbon nitride, paper with porous silicon dioxide gel particles loaded with graphite-phase carbon nitride and production method of porous silicon dioxide gel particles loaded with graphite-phase carbon nitride
  • Porous silicon dioxide gel particles loaded with graphite-phase carbon nitride, paper with porous silicon dioxide gel particles loaded with graphite-phase carbon nitride and production method of porous silicon dioxide gel particles loaded with graphite-phase carbon nitride

Examples

Experimental program
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Effect test

Embodiment 1

[0046] At room temperature, take 100mL tetraethyl orthosilicate aqueous solution and disperse it in absolute ethanol, stir for 30min to fully hydrolyze, then add 0.2g of g-C 3 N 4 , after stirring evenly, drop by drop the concentration less than 1mol L -1 The ammonia water was continuously stirred for 1h until the solution became viscous, then stood and aged, and after replacing the absolute ethanol in the system with deionized water for many times, the deionized water was poured out to obtain SiO 2 / g -C 3 N 4 gel system. SiO 2 / g -C 3 N 4 The gel system was frozen into a solid within 1 min, freeze-dried for 20 h, then calcined in a muffle furnace at 550°C for 2 h, and cooled naturally to room temperature to obtain porous silica gel particles loaded with graphite phase carbon nitride.

[0047] The obtained porous silica gel particles loaded with graphite phase carbon nitride were sieved to screen out silica microspheres with a particle size of 50 μm and ensure uniform ...

Embodiment 2

[0049] At room temperature, take 100mL tetraethyl orthosilicate aqueous solution and disperse it in absolute ethanol, stir for 30min to fully hydrolyze, then add 0.4g of g-C 3 N 4 , after stirring evenly, drop by drop the concentration less than 1mol L -1 The ammonia water was continuously stirred for 1h until the solution became viscous, then left to stand and aged, and methanol was used to replace the absolute ethanol and water in the system several times, then the methanol was poured off to obtain SiO 2 / g -C 3 N 4 gel system. SiO 2 / g -C 3 N 4 The gel system was frozen into a solid within 1 min, freeze-dried for 21 h, then calcined in a muffle furnace at 550°C for 2 h, and cooled naturally to room temperature to obtain porous silica gel particles loaded with graphite phase carbon nitride.

[0050] The obtained porous silica gel particles loaded with graphite phase carbon nitride were sieved to screen out silica microspheres with a particle size of 50 μm and ensure u...

Embodiment 3

[0052] At room temperature, take 100mL tetraethyl orthosilicate aqueous solution and disperse it in absolute ethanol, stir for 30min to fully hydrolyze, then add 0.6g of g-C 3 N 4 , after stirring evenly, drop by drop the concentration less than 1mol L -1 The ammonia water was continuously stirred for 1h until the solution became viscous, then stood and aged, and after replacing the absolute ethanol in the system with deionized water for many times, the deionized water was poured out to obtain SiO 2 / g -C 3 N 4 gel system. SiO 2 / g -C 3 N 4 The gel system was frozen into a solid within 1 min, freeze-dried for 22 h, then calcined in a muffle furnace at 550°C for 2 h, and cooled naturally to room temperature to obtain porous silica gel particles loaded with graphitic carbon nitride.

[0053] The obtained porous silica gel particles loaded with graphite phase carbon nitride were sieved to screen out silica microspheres with a particle size of 50 μm and ensure uniform mass ...

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Abstract

The invention discloses porous silicon dioxide gel particles loaded with graphite-phase carbon nitride, paper with the porous silicon dioxide gel particles loaded with the graphite-phase carbon nitride and a production method of the porous silicon dioxide gel particles loaded with the graphite-phase carbon nitride, and belongs to the technical field of environmental catalysis. A sol-gel method is adopted for mixing a tetraethoxysilane aqueous solution and g-C3N4 to produce the porous silicon dioxide gel particles loaded with the graphite-phase carbon nitride, the porous silicon dioxide gel particles loaded with the graphite-phase carbon nitride has a large specific surface area, the pore structure size is controllable, and the particle size of an assistant is controllable. Production conditions are mild, the process is simple, the raw materials are cheap, the repeatability is good, and the produced material has good photocatalytic performance. When the porous silicon dioxide gel particles loaded with the graphite-phase carbon nitride are added into decorative materials, the catalytic efficiency of photocatalytic materials can be improved, and the study range of the photocatalytic materials is expanded.

Description

technical field [0001] The invention belongs to the technical field of environmental catalysis, and in particular relates to a porous silicon dioxide gel particle loaded with graphite phase carbon nitride, paper with the same and a preparation method thereof. Background technique [0002] Environmental pollution has become a major problem that our country and the world need to face. Formaldehyde is a colorless gas with a strong pungent smell. Its 37% aqueous solution is called formalin. It is commonly used in medical and scientific research departments. Preservation of specimens. In order to prevent corrosion of interior decoration materials and furniture, wood is also commonly soaked in formaldehyde solution before processing to prevent corrosion and damage by wood borers. The boiling point of formaldehyde is 19.5°C, and it is very volatile at room temperature, and the volatilization speed is accelerated as the temperature rises. It ranks second in my country's priority l...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/08B01J37/03B01D53/86B01D53/72D21H17/68D21H21/14D21H27/18
CPCB01J27/24B01J35/004B01J37/08B01J37/036B01D53/8668D21H17/68D21H21/14D21H27/18B01D2258/06
Inventor 马永宁段仪豪王蒙费贵强王海花李小龙杨雨豪韩玉英
Owner SHAANXI UNIV OF SCI & TECH
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