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Preparing method of amino-functionalized mesoporous cerium oxide

An amino function, cerium oxide technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve the effects of good repeatability, large adsorption capacity, and simple synthesis

Inactive Publication Date: 2015-01-07
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are no patents or related literature reports on the preparation of amino-functionalized mesoporous cerium oxide and its photocatalytic degradation of related acid dyes by using mild hydrothermal and modified amino groups in aqueous ethanol solution.

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  • Preparing method of amino-functionalized mesoporous cerium oxide
  • Preparing method of amino-functionalized mesoporous cerium oxide

Examples

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Embodiment 1

[0033] Add 1.74 g P in 15 ml ethanol and 7.5 ml deionized water 123 , stirred in a water bath at 40 ℃ for 40 min to fully dissolve; 1.20 g Ce(NO 3 ) 3 ·6H 2 O was dissolved in 7.5 ml of deionized water, and this solution was added dropwise to P 123 In the solution, after magnetic stirring for 60 min, 28% concentrated ammonia water was added dropwise until the pH value of the solution was 9; after the above alkaline solution was cooled to room temperature, 30% H 2 o 2 7.5 ml to make the solution turn reddish-brown, continue to stir until the reddish-brown precipitate is evenly suspended in the solution, then transfer the mixed solution to a polytetrafluoroethylene-lined autoclave, and conduct a hydrothermal reaction at 90 °C for 20 h. After filtering, washing with water, washing with ethanol, and drying at 40 °C, the pre-product was obtained; the pre-product was extracted with absolute ethanol, filtered, washed with ethanol, and dried at 40 °C to obtain a mesoporous cerium...

Embodiment 2

[0035] Add 5.12 g P in 20 ml ethanol and 12.5 ml deionized water 123 , stirred in a water bath at 60 ℃ for 40 min to fully dissolve; 4.80 g Ce(NO 3 ) 3 ·6H 2 O was dissolved in 12.5 ml of deionized water, and this solution was added dropwise to P 123 In the solution, after magnetic stirring for 60 min, 28% concentrated ammonia water was added dropwise until the pH value of the solution was 10; after the above alkaline solution was cooled to room temperature, 30% H 2 o 2 12.5 ml to make the solution turn reddish-brown, continue to stir until the reddish-brown precipitate is evenly suspended in the solution, then transfer the mixed solution to a high-pressure reactor with a polytetrafluoroethylene liner, and conduct a hydrothermal reaction at 120 °C for 30 h. After filtering, washing with water, washing with ethanol, and drying at 70 °C, the pre-product was obtained; the pre-product was extracted with absolute ethanol, filtered, washed with ethanol, and dried at 70 °C to ob...

Embodiment 3

[0037] Add 1.74 g P in 15 ml ethanol and 7.5 ml deionized water 123 , stirred in a water bath at 40 ℃ for 40 min to fully dissolve; 1.20 g Ce(NO 3 ) 3 ·6H 2 O was dissolved in 7.5 ml of deionized water, and this solution was added dropwise to P 123 In the solution, after magnetic stirring for 60 min, 28% concentrated ammonia water was added dropwise until the pH value of the solution was 9; after the above alkaline solution was cooled to room temperature, 30% H 2 o 2 7.5 ml to make the solution turn reddish-brown, continue to stir until the reddish-brown precipitate is evenly suspended in the solution, then transfer the mixed solution to a polytetrafluoroethylene-lined autoclave, and conduct a hydrothermal reaction at 90 °C for 20 h. After filtering, washing with water, washing with ethanol, and drying at 40 °C, the pre-product was obtained; the pre-product was extracted with absolute ethanol, filtered, washed with ethanol, and dried at 40 °C to obtain a mesoporous cerium...

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Abstract

The invention relates to a preparing method of amino-functionalized mesoporous cerium oxide. The preparing method includes: fully dissolving P123 into an aqueous methanol solution; dissolving a certain amount of Ce(NO3)3-6H2O into deionized water to form a clear solution; adding the clear solution dropwise into the P123 solution under stirring; after the solutions are fully mixed, adding stronger ammonia water to adjust the pH value to make the mixture alkaline; adding dropwise a certain amount of an antioxidant to oxidize Ce<3+> in the solution into Ce<4+>; stirring continuously to mix the solution for a period of time; transferring the solution to a high-pressure reactor; performing a hydrothermal reaction for a period of time; filtering, washing with water, washing with alcohol and drying to obtain a pre-product; subjecting the pre-product to extraction, filtration and drying to obtain mesoporous cerium oxide with a high surface hydroxy content; mixing an organic compound containing amino functional groups and the synthesized mesoporous cerium oxide; and adjusting the pH value of the solution to form the amino-functionalized mesoporous cerium oxide.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic-organic hybrids, in particular to a preparation method of amino functionalized mesoporous cerium oxide. [0002] Background technique [0003] As we all know, with the continuous deepening of our country's modernization process, environmental pollution has become a major problem that threatens our survival. Environmental pollution mainly includes air pollution (such as smog), water pollution, and soil pollution (such as heavy metal and organic substance pollution). Organic pollutants are important substances that cause water and soil pollution, and organic dyes account for a large proportion of organic pollutants. my country is a big producer of organic dyes, and a large amount of organic dyes are discharged into water bodies every year, leading to the death of aquatic animals and plants and indirectly endangering human survival. Therefore, wastewater containing organic dyes mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10
Inventor 郝仕油侯杰
Owner ZHEJIANG NORMAL UNIVERSITY
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