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Method for preparing nanometer environmental materials on CeO2/Fe2O3-loaded attapulgite

A technology of attapulgite and fe2o3-atp, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., to achieve increased specific surface area, simple synthesis process, and low production cost Effect

Inactive Publication Date: 2017-06-13
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the literature reports use the impregnation method or co-precipitation method to load multi-metal oxides on bentonite and carbon nanomaterials, but there are few methods for loading multi-metal elements on attapulgite

Method used

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  • Method for preparing nanometer environmental materials on CeO2/Fe2O3-loaded attapulgite
  • Method for preparing nanometer environmental materials on CeO2/Fe2O3-loaded attapulgite
  • Method for preparing nanometer environmental materials on CeO2/Fe2O3-loaded attapulgite

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Weigh 1g of attapulgite in 100ml of deionized water and keep stirring for 24h at room temperature; weigh 8.0780g of Fe(NO 3 ) 3 9H 2 O in 100ml of deionized water, adjust the pH of the solution to 8, and keep stirring in a water bath at 70°C for 2 hours, then leave it at room temperature to age for 24 hours; add the aged solution dropwise to the suspension of attapulgite , so that [Fe 3+ ] / ATP=20mmol / g, adjust the pH of the mixture to 10, and keep stirring in a water bath at 70°C for 5h to obtain Fe 2 o 3 / ATP nanomaterials. figure 1 For utilizing the Fe prepared by the method of the present invention 2 o 3 @HTEM diffraction pattern of ATP nanoparticles. It can be seen from the figure that Fe 2 o 3 Distributed over ATP, but not evenly.

Embodiment 2

[0032] Weigh 1g of attapulgite in 100ml of deionized water at room temperature and keep stirring for 24h; weigh 8.6824g of Ce(NO 3 ) 3 ·6H 2 O in 100ml of deionized water, adjust the pH of the solution to 8, and keep stirring in a water bath at 70°C for 2 hours, then leave it at room temperature to age for 24 hours; add the aged solution dropwise to the suspension of attapulgite , so that [Ce 3+ ] / ATP=20mmol / g, adjust the pH of the mixture to 10, and keep stirring in a 70°C water bath for 5h to prepare CeO 2 @ATP nanomaterials. figure 2 For utilizing the CeO prepared by the method of the present invention 2 @ HTEM diffraction pattern of ATP nanoparticles. It can be seen from the figure that CeO 2 Distributed on ATP, the distribution is relatively uniform.

Embodiment 3

[0034]Weigh 1g of attapulgite in 100ml of deionized water and keep stirring at room temperature for 24h; prepare Ce(NO 3 ) 3 ·6H 2 O and Fe(NO 3 ) 3 9H 2 O in 100ml of deionized water, adjust the pH of the solution to 8, and keep stirring in a water bath at 70°C for 2 hours, then leave it at room temperature to age for 24 hours; add the aged solution dropwise to the suspension of attapulgite , so that [Ce 3+ ]+[Fe 3+ ]) / ATP=20mmol / g, adjust the pH of the mixture to 10, and keep stirring in a water bath at 70°C for 5h to obtain CeO 2 -Fe 2 o 3 / ATP nanomaterials. image 3 For utilizing the CeO prepared by the method of the present invention 2 -Fe 2 o 3 @HTEM diffraction pattern of ATP nanoparticles. It can be seen from the figure that the two kinds of particles are relatively evenly loaded on ATP. The darker particles are Fe 2 o 3 , the lighter colored particles are CeO 2 .

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Abstract

The invention discloses a method for preparing CeO2 / Fe2O3-ATP (attapulgite) granular composite nano-particles. The method has the advantages that attapulgite can be used as a catalyst carrier for providing certain active sites for Ce3+ and Fe3+ load according to a principle that the attapulgite has huge specific surface areas, is excellent in adsorption performance and is high in degradation removal capacity for certain persistent organic pollutants and heavy metal, and accordingly the catalytic capacity of heterogeneous Fenton reaction can be improved; cerium and iron are added into the attapulgite, accordingly, the shortcoming of colloidal performance of the attapulgite can be overcome, and novel environmental nanometer repair materials are easy to separate and recycle and can be used for removing organic pollutants in environments.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic nanometer materials, relates to a method for preparing metal oxide composite nanoparticles, and belongs to the field of environmental restoration. Background technique [0002] Fe 2 o 3 It is an oxide with relatively stable properties among iron oxides. It has the advantages of rich content, no harm to the environment, and low preparation cost. CeO 2 It is an oxide with good oxidation reaction, unique reducing characteristics and high oxygen storage capacity, so it can be used as a replacement or partial replacement of noble metal catalysts. People pay more and more attention to the application of catalysts and co-catalysts in the research of industrial catalysis such as heterogeneous Fenton catalysis and gas catalytic oxidation. Attapulgite (ATP) is a layer-chain hydrous magnesium-rich silicate mineral, which has a special layer-chain crystal structure, a large number of micropores, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/02B01J35/00
CPCB01J23/83B01J35/00B01J35/30B01J35/50B01J35/40
Inventor 王小治韩书文侯建华王圣森郁何敏尹微琴封克
Owner YANGZHOU UNIV