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ag@fe 3 o 4 @c/tio 2 Synthetic method of nanomaterial and its use

A technology of nanomaterials and synthesis methods, applied in the field of new antibacterial materials, can solve the problems that formaldehyde and benzene series cannot be completely removed, reduce the concentration of formaldehyde and benzene series, and achieve excellent removal of formaldehyde and benzene series under visible light catalysis Effect

Active Publication Date: 2022-07-26
广西柳州中和高新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, activated carbon, diatomaceous earth and other adsorption materials cannot completely remove formaldehyde and benzene series, but only temporarily absorb to reduce the concentration of formaldehyde and benzene series. Once the adsorption is saturated, it cannot be removed.
The use of titanium dioxide photocatalytic materials to remove formaldehyde and benzene series requires the use of ultraviolet light energy due to the problem of its energy band width. Indoors or in cars, it is difficult to use the energy in sunlight because glass absorbs ultraviolet light. Ultraviolet light energy achieves the purpose of photocatalytic oxidation of formaldehyde and benzene series

Method used

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  • ag@fe <sub>3</sub> o <sub>4</sub> @c/tio <sub>2</sub> Synthetic method of nanomaterial and its use

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Experimental program
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Effect test

Embodiment 1

[0017] Ag@Fe 3 O 4 @C / TiO 2 A method for synthesizing nanomaterials, comprising the following steps:

[0018] A. Take 1kg of coconut shell activated carbon and mix well to obtain carbon base material:

[0019] B. Take Fe 3 O 4 Magnetic nanoparticles, dispersed in ethanol to give Fe 3 O 4 Ethanol dispersion, to Fe 3 O 4 First add ethanol to the ethanol dispersion, then add deionized water and 25% concentrated ammonia solution by weight, mix well, sonicate for 10 minutes, add the carbon base material obtained in step A, stir continuously for 5 hours at room temperature, filter, The precipitate was washed with deionized water and ethanol, respectively, and filtered to obtain Fe 3 O 4 @C;

[0020] the Fe 3 O 4 In ethanol dispersion, Fe 3 O 4 The content of Fe is 0.01g / mL; the Fe 3 O 4 The weight ratio of ethanol dispersion, ethanol, deionized water, concentrated ammonia solution, and carbon base material is 2:200:50:2:1;

[0021] the Fe 3 O 4 The preparation me...

Embodiment 2

[0027] Ag@Fe 3 O 4 @C / TiO 2 A method for synthesizing nanomaterials, comprising the following steps:

[0028] A, get coconut shell activated carbon 1kg, single-arm carbon nanotube 1kg, graphene 1kg, mix well, obtain carbon base material:

[0029] B. Take Fe 3 O 4 Magnetic nanoparticles, dispersed in ethanol to give Fe 3 O 4 Ethanol dispersion, to Fe 3 O 4 First add ethanol to the ethanol dispersion, then add deionized water and 28% concentrated ammonia solution by weight, mix well, sonicate for 60 minutes, add the carbon base material obtained in step A, stir continuously for 20 hours at room temperature, filter, The precipitate was washed with deionized water and ethanol, respectively, and filtered to obtain Fe 3 O 4 @C;

[0030] the Fe 3 O 4 In ethanol dispersion, Fe 3 O 4The content of Fe is 0.1g / mL; the Fe 3 O 4 The weight ratio of ethanol dispersion, ethanol, deionized water, concentrated ammonia solution, and carbon base material is 4:360:90:5:1;

[003...

Embodiment 3

[0037] Ag@Fe 3 O 4 @C / TiO 2 A method for synthesizing nanomaterials, comprising the following steps:

[0038] A, get coconut shell activated carbon 1kg, single-arm carbon nanotube 0.5kg, graphene 0.5kg, mix well, obtain carbon base material:

[0039] B. Take Fe 3 O 4 Magnetic nanoparticles, dispersed in ethanol to give Fe 3 O 4 Ethanol dispersion, to Fe 3 O 4 First add ethanol to the ethanol dispersion, then add deionized water and a concentrated ammonia solution with a concentration of 25-28% by weight, mix well, ultrasonicate for 30 minutes, add the carbon base material obtained in step A, and continue stirring at room temperature for 10h, Filtration, the precipitate was washed with deionized water and ethanol, respectively, and filtered to obtain Fe 3 O 4 @C;

[0040] the Fe 3 O 4 In ethanol dispersion, Fe 3 O 4 The content of Fe is 0.6g / mL; the Fe 3 O 4 The weight ratio of ethanol dispersion, ethanol, deionized water, concentrated ammonia solution, and car...

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Abstract

Ag@Fe involved in the present invention 3 O 4 @C / TiO 2 Methods of synthesizing nanomaterials and their uses. The synthetic method comprises the following steps: A. taking coconut shell activated carbon, single-arm carbon nanotubes and graphene, and mixing them evenly to obtain a carbon base material; B. taking Fe 3 O 4 Ethanol dispersion, add ethanol, deionized water and concentrated ammonia solution, mix well, sonicate, add carbon base material, stir, filter, wash, filter to obtain Fe 3 O 4 @C; C, will Fe 3 O 4 @C with AgNO 3 The solutions were mixed, sodium hydroxide solution was added dropwise with stirring, washed until neutral, and sodium borohydride solution was added dropwise to the neutral dispersion under stirring, filtered, and washed until neutral to obtain Ag@Fe 3 O 4 @C Nanomaterials; D. A sol was made with butyl titanate, anhydrous ethanol, glacial acetic acid and deionized water, and Ag@Fe was added 3 O 4 @C Nanomaterials, aged, dried, heated at constant temperature under argon protection, cooled. The nanomaterial of the present invention can remove formaldehyde and benzene series compounds under visible light catalysis.

Description

technical field [0001] The invention relates to the field of novel antibacterial materials, in particular to Ag@Fe 3 O 4 @C / TiO 2 A method for synthesizing nanomaterials and its application in removing formaldehyde and benzene series under photocatalysis. Background technique [0002] At present, the removal of formaldehyde and benzene series in indoor or car mainly uses activated carbon, diatomaceous earth and other adsorption materials or titanium dioxide photocatalytic materials. However, at present, adsorption materials such as activated carbon and diatomaceous earth cannot completely remove formaldehyde and benzene series, but only temporarily adsorb to reduce the concentration of formaldehyde and benzene series. Once the adsorption is saturated, it can no longer be removed. The use of titanium dioxide photocatalytic materials to remove formaldehyde and benzene series requires the use of ultraviolet light energy due to the problem of its energy band width. In indoor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/00B01D53/72B01D53/86B82Y30/00F24F8/167
CPCB01D53/8668B01D53/72B01D53/007F24F8/167B82Y30/00B01D2258/06B01D2257/91
Inventor 吕保樱
Owner 广西柳州中和高新技术有限公司
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