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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 separation and regeneration, and poor mechanical stability, which restrict their large-scale application in industrial production.

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

Embodiment 1

[0026] Take 2g of halloysite nanotube powder and add it into 100ml of water, and stir at high speed to disperse the nanotubes evenly in the water. Add 2 g of sodium alginate particles into 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. The sodium alginate / halloysite nanotube mixed mucus was added dropwise to the calcium chloride solution at a uniform speed, and solidified to form particles. The particles are filtered and washed repeatedly with water to remove residual calcium ions on the surface of the particles. The particles are dried to obtain dry alginate / halloysite nanotube composite porous balls.

[0027] The digital photos of the prepared alginate / halloysite nanotube composite porous spheres are shown in figure 1 ;

[0028] Scanning electron microscopy (SEM) analysis of the as-prepared al...

Embodiment 2

[0032] Take 2g of halloysite nanotube powder and add it into 200ml of water, and stir at high speed to make the nanotubes evenly dispersed in the water. Add 5 g of sodium alginate particles into 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. The sodium alginate / halloysite nanotube mixed mucus was added dropwise to the calcium chloride solution at a uniform speed, and solidified to form particles. The particles are filtered and washed repeatedly with water to remove residual calcium ions on the surface of the particles. The particles are dried to obtain dry alginate / halloysite nanotube composite porous balls.

[0033] Scanning electron microscopy (SEM) analysis of the as-prepared alginate / halloysite nanotube composite porous spheres is shown in Figure 4

[0034] The adsorption effect of the prep...

Embodiment 3

[0037] Take 9g of halloysite nanotube powder and add it into 1000ml of water, and stir at a high speed, so that the nanotubes are evenly dispersed in the water. Add 5 g of sodium alginate particles into the halloysite nanotube suspension, and continue stirring to obtain a sodium alginate / halloysite nanotube mixed viscous liquid in which the halloysite nanotubes are uniformly dispersed. The sodium alginate / halloysite nanotube mixed mucus was added dropwise into the barium chloride solution at a uniform speed, and solidified to form particles. The particles are filtered and washed repeatedly with water to remove residual barium ions on the surface of the particles. The particles are dried to obtain dry alginate / halloysite nanotube composite porous balls.

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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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