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Porous carbon adsorbing agent containing nano zinc oxide micropartical and its preparation process and application

A nano-zinc oxide, porous carbon technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of secondary pollution of microorganisms, and achieve the effect of preventing secondary pollution and strong adsorption capacity

Inactive Publication Date: 2006-01-25
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, because the surface of carbon is easy to breed bacteria, especially in drinking water purification, it may cause secondary pollution of microorganisms

Method used

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  • Porous carbon adsorbing agent containing nano zinc oxide micropartical and its preparation process and application
  • Porous carbon adsorbing agent containing nano zinc oxide micropartical and its preparation process and application
  • Porous carbon adsorbing agent containing nano zinc oxide micropartical and its preparation process and application

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Experimental program
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Effect test

Embodiment 1

[0024] By ethanol: water: zinc nitrate: surfactant: active carbon fiber=30ml: 100ml: 5g: 15g: 5g ratio, ethanol, water and zinc nitrate are mixed, add surfactant sodium dodecylbenzenesulfonate again, Make a microemulsion; then add activated carbon fiber; add sodium hydroxide solution (concentration 1 mole / liter) under stirring according to the molar ratio of zinc nitrate: sodium hydroxide = 1: 1, to form zinc hydroxide precipitation. The solution was filtered off, washed and dried; the resulting solid mixture was burned at 600° C. for 1 hour to obtain activated carbon fibers containing nano-zinc oxide particles. The loading of zinc oxide in the product is 40%wt. The product is analyzed by a scanning electron microscope, and its surface is loaded with dense particles, which are in an agglomerated state, and the particle size of the aggregate is about 1 μm. Agglomerates are composed of many finer nanoscale particles. The particles were analyzed by X-ray diffraction and proved ...

Embodiment 2

[0026] By ethanol: water: zinc nitrate: surfactant: activated carbon fiber=20ml: 120ml: 5g: 20g: 5g ratio, ethanol, water and zinc nitrate are mixed, add surfactant sodium dodecylbenzenesulfonate again, Make a microemulsion; then add activated carbon fiber; add sodium hydroxide solution (concentration 2 mol / liter) under stirring according to the molar ratio of zinc nitrate: sodium hydroxide = 1: 3, to form zinc hydroxide precipitation. The solution was filtered off, washed and dried; the resulting solid mixture was burned at 600° C. for 1 hour to obtain activated carbon fibers containing nano-zinc oxide particles. The loading of zinc oxide in the product is 20%. The product is analyzed by a scanning electron microscope, and its surface is loaded with dispersed particles with a particle size of about 10-20nm. The particles were analyzed by X-ray diffraction and proved to be hexagonal zinc oxide crystals. The crystal grain size calculated from X-ray diffraction was 10 nm.

Embodiment 3

[0028] According to the ratio of ethanol: water: zinc nitrate: surfactant: activated carbon=30ml: 100ml: 8g: 20g: 5g, ethanol, water and zinc nitrate are mixed, then add surfactant sodium dodecylsulfonate, be made into Microemulsion; then add active carbon; add sodium hydroxide solution (concentration 1 mole / liter) by the molar ratio of zinc nitrate: sodium hydroxide=1:1 under stirring to form zinc hydroxide precipitate. The solution was filtered off, washed and dried; the resulting solid mixture was burned at 600°C for 1 hour to obtain the product activated carbon containing nano zinc oxide particles. The loading of zinc oxide in the product is 65%wt. The product is analyzed by a scanning electron microscope, and its surface is loaded with dense strip-shaped hexagonal columnar crystals, with a crystal diameter of about 20nm and a length of about 300nm. The particles were analyzed by X-ray diffraction and proved to be hexagonal zinc oxide crystals.

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Abstract

A porous charcoal adsorbent for cleaning environment is composed of porous charcoal as carrier and zinc oxide nano-particles as active component. Its preparing process includes such steps as reaction between zinc nitrate micro-emulsion and sodium hydroxide to obtain zinc oxide nano-particles, carrying them by porous charcoal and heat treating. Its advantages are high absorptive power and high photo-catalytic and antibacterial activities.

Description

technical field [0001] The invention relates to a porous carbon adsorbent containing nano zinc oxide particles and a preparation method thereof, and the application of the porous carbon adsorbent for purifying volatile organic pollutants and antibacterial materials. Background technique [0002] Nanomaterials have very important application prospects in the field of environmental protection because of their unique particle size and surface properties, their unique photocatalytic properties, and their antibacterial, deodorizing, and disinfection properties. Nano-ZnO is a new type of high-performance fine inorganic material, and its particle size is between 1 and 100nm. Due to the miniaturization of particle size, nano-ZnO has surface effects, small-size effects, quantum effects and macroscopic quantum tunneling effects that its bulk materials do not have. has some special properties. Under the irradiation of ultraviolet light, nano-ZnO has the function of catalyst and photo...

Claims

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Application Information

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IPC IPC(8): B01J20/06
Inventor 陈水挟冯飞月
Owner SUN YAT SEN UNIV
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