Alginate/halloysite nanotube composite-porous ball and preparation method therefor

A halloysite nanotube, alginate technology, applied in silicate, chemical instruments and methods, aluminum silicate, etc., can solve the problems of complex modification process of adsorbent, restricting large-scale application, poor mechanical stability, etc. , to achieve the effect of easy separation and regeneration, maintaining mechanical and chemical stability, and improving adsorption performance

Inactive Publication Date: 2012-07-04
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the current research, most of the adsorbents have problems such as complicated modification process, difficult

Method used

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  • Alginate/halloysite nanotube composite-porous ball and preparation method therefor
  • Alginate/halloysite nanotube composite-porous ball and preparation method therefor
  • Alginate/halloysite nanotube composite-porous ball and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] Take 2g of halloysite nanotube powder into 100ml of water and stir at high speed to make the nanotubes uniformly dispersed in the water. Add 2 g of sodium alginate particles to the halloysite nanotube suspension and continue stirring to completely dissolve the sodium alginate to obtain a sodium alginate / halloysite nanotube mixed viscous liquid in which the halloysite nanotubes are uniformly dispersed. Add the sodium alginate / halloysite nanotube mixed mucus dropwise to the calcium chloride solution at a uniform speed to solidify to form particles. Filter the particles and wash them repeatedly with water to remove the residual calcium ions on the surface of the particles. The particles are dried to obtain dry alginate / hallolite nanotube composite porous spheres.

[0027] See the digital photo of the prepared alginate / hallolite nanotube composite porous sphere figure 1 ;

[0028] Scanning electron microscope (SEM) analysis of the prepared alginate / halloli...

Example Embodiment

[0031] Example 2:

[0032] Take 2g of halloysite nanotube powder into 200ml of water and stir at high speed to make the nanotubes uniformly dispersed in the water. Add 5 g of sodium alginate particles to the halloysite nanotube suspension, continue to stir to completely dissolve the sodium alginate, and obtain a sodium alginate / halloysite nanotube mixed viscous liquid in which the halloysite nanotubes are uniformly dispersed. Add the sodium alginate / halloysite nanotube mixed mucus dropwise to the calcium chloride solution at a uniform speed to solidify to form particles. Filter the particles and wash them repeatedly with water to remove the residual calcium ions on the surface of the particles. The particles are dried to obtain dry alginate / hallolite nanotube composite porous spheres.

[0033] Scanning electron microscope (SEM) analysis of the prepared alginate / hallolite nanotube composite porous spheres can be seen Figure 4

[0034] The adsorption effect of the prepared compos...

Example Embodiment

[0036] Example 3:

[0037] Take 9g of halloysite nanotube powder and add it to 1000ml of water and stir at high speed to make the nanotubes uniformly dispersed in the water. Add 5 g of sodium alginate particles to the halloysite nanotube suspension and continue to stir to obtain a sodium alginate / halloysite nanotube mixed viscous liquid in which the halloysite nanotubes are uniformly dispersed. Add the sodium alginate / halloysite nanotube mixed mucus dropwise to the barium chloride solution at a uniform speed to solidify to form particles. Filter the particles and wash them repeatedly with water to remove the residual barium ions on the surface of the particles. The particles are dried to obtain dry alginate / hallolite nanotube composite porous spheres.

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Abstract

The invention discloses a novel alginate/halloysite nanotube composite-porous ball and a preparation method therefor, belonging to the field of nano materials. Porous balls are formed by overlapping halloysite nanotubes, a large amount of through micropores are contained in the porous balls, the porous balls combine the adsorption functions of alginate and the halloysite nanotubes and also have good mechanical and chemical stability. Raw materials adopted are all cheap, natural, harmless and environmentally-friendly, are easy to obtain and can be taken as novel adsorbents in the fields of waste water treatment, drug release, etc.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and relates to a novel adsorbent alginate / halloysite nanotube composite porous ball and a preparation method thereof. Background technique [0002] At present, with the rapid development of industrial and agricultural production and the national economy, the problem of water resources has become more and more prominent, and water pollution has become a topic of concern to people. A large amount of discharged wastewater inevitably causes pollution of different natures or degrees to the water environment, thereby endangering people's physical and mental health, hindering industrial and agricultural production, and restricting the sustainable development of human society and economy. [0003] In the current water treatment technology, the adsorption method is widely used because of its simple operation, high efficiency and low energy consumption. A key issue that determines the application of adso...

Claims

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Application Information

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IPC IPC(8): B01J20/16B01J20/28B01J20/30C02F1/28
Inventor 张冰刘金盾刘琳张翔张浩勤
Owner ZHENGZHOU UNIV
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