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Zinc-containing multielement metallic oxide/carbon nanotube complex as well as preparation method and application thereof

A technology of carbon nanotubes and multiple metals, which is applied in the field of metal oxide/carbon nanotube composite materials and its preparation, can solve the problems of small specific surface area, reduced active sites, and poor dispersion of roasted products, so as to increase the number and inhibit agglomeration , Improve the effect of dispersion

Inactive Publication Date: 2010-05-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, roasting will cause the laminates to collapse and the particles to agglomerate, which will result in a small specific surface area, poor dispersion, and reduced active sites of the roasted product, thereby affecting its performance.

Method used

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  • Zinc-containing multielement metallic oxide/carbon nanotube complex as well as preparation method and application thereof
  • Zinc-containing multielement metallic oxide/carbon nanotube complex as well as preparation method and application thereof
  • Zinc-containing multielement metallic oxide/carbon nanotube complex as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A. Weigh 1.7848g of Zn(NO 3 ) 2 ·6H 2 O and 0.7503g of Al(NO 3 ) 3 9H 2 O is dissolved in 50ml deionized water to prepare a mixed salt solution, wherein the molar concentrations of various metal ions are [Zn 2+ ]=0.12mol / L, [Al 3+ ]=0.04mol / L. Prepare NaOH and Na with deionized water 2 CO 3 Mixed alkaline solution, where [NaOH]=0.32mol / L, [NaOH]=0.32mol / L, [NaOH] 2 CO 3 ]=0.08mol / L.

[0024] B. Weigh again 0.50 g of acid-modified carbon nanotubes and mix them with 50 ml of the mixed salt solution prepared in step A. After ultrasonic dispersion for 30 minutes, add the mixed alkaline solution prepared in step A dropwise to the mixed solution containing carbon nanotubes and control the pH of the solution to 9. After the dropwise addition, ultrasonically disperse for 30 minutes. Move the reaction vessel into a water bath to control the crystallization temperature at 40°C and the crystallization time for 3 hours. Wash with water until neutral, and finally dry the...

Embodiment 2

[0028] A. Weigh 2.9747g of Zn(NO 3 ) 2 ·6H 2 O and 0.9378g of Al(NO 3 ) 3 9H 2 O is dissolved in 50ml deionized water to prepare a mixed salt solution, wherein the molar concentrations of various metal ions are [Zn 2+ ]=0.20mol / L, [Al 3+ ]=0.05mol / L. Prepare NaOH and Na with deionized water 2 CO 3 Mixed alkaline solution, where [NaOH]=0.40mol / L, [NaOH]=0.40mol / L, [NaOH] 2 CO 3 ]=0.10mol / L;

[0029] B. Weigh again 0.50 g of acid-modified carbon nanotubes and mix them with 50 ml of the mixed salt solution prepared in step A. After ultrasonic dispersion for 30 minutes, add the mixed alkaline solution prepared in step A dropwise to the mixed solution containing carbon nanotubes and control the pH of the solution to 10. After the dropwise addition, ultrasonically disperse for 30 minutes. Move the reaction vessel into a water bath to control the crystallization temperature at 60°C and the crystallization time for 6 hours. Washing with water until neutral, and finally dry...

Embodiment 3

[0033] A. Weigh 2.8756g of ZnSO 42 ·6H 2 O and 3.7513g of Al(NO 3 ) 3 9H 2 O is dissolved in 50ml deionized water to prepare a mixed salt solution, wherein the molar concentrations of various metal ions are [Zn 2+ ]=0.20mol / L, [Al 3+ ]=0.20mol / L. Prepare NaOH and Na with deionized water 2 CO 3 Mixed alkaline solution, where [NaOH]=0.40mol / L, [NaOH]=0.40mol / L, [NaOH] 2 CO 3 ]=0.40mol / L;

[0034] B. Weigh again 0.50 g of acid-modified carbon nanotubes and mix them with 50 ml of the mixed salt solution prepared in step A. After ultrasonic dispersion for 30 minutes, add the mixed alkaline solution prepared in step A dropwise to the mixed solution containing carbon nanotubes and control the pH of the solution to 11. After the dropwise addition, ultrasonically disperse for 20 minutes. Move the reaction vessel into a water bath to control the crystallization temperature to 80°C and the crystallization time to 12 hours. Wash with water until neutral, and finally dry the fil...

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Abstract

The invention provides a zinc-containing multielement metallic oxide / carbon nanotube complex as well as a preparation method and an application thereof. In the preparation method of the complex, ions of Mg2+, Zn2+ and Al3+ are introduced into a laminated plate according to the characteristics of structural designability of layered double hydroxides and adjustability of laminated plate formation, and a layered double hydroxide / carbon nanotube hybridization complex is obtained by the in-situ compounding of the ions with a surface modified carbon nanotube; and a zinc-containing multielement metallic oxide / carbon nanotube complex material with good dispersity and large specific surface area is obtained by high-temperature calcination. The complex material presents an excellent adsorption property on organic dye molecules, and the adsorbing capacity can reach 220-350mg / g. The invention has simple preparation method and no environmental pollution and is suitable for the industrialization process.

Description

Technical field [0001] The invention involves metal oxide / carbon nanotimal composite materials and its preparation technology.Specifically involved the adsorption materials and preparation methods of zinc -containing diverse metal oxides / carbon nanopotranskin complexes.This adsorption material is mainly used for adsorption of organic dyes. technical background [0002] Dye pollutants are important pollutants globally. They are widely distributed, complicated, strong, and difficult to degrade. Therefore, dye wastewater has always been a difficult point in industrial wastewater treatment.In addition, with the development of the printing and dyeing industry, the dye sewage discharge is increasing year by year, which has adversely affected the water resources and environment.Therefore, the discoloration treatment of dye wastewater has become a hot spot for today.At present, the method of processing dye wastewater is chemical precipitation, photocatalytic oxidation method, hydrogen pe...

Claims

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Application Information

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IPC IPC(8): B01J20/04
Inventor 李峰王辉项顼
Owner BEIJING UNIV OF CHEM TECH
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