Preparation method of phthalocyanin modified cerium dioxide nano particles

A technology of cerium dioxide and nanoparticles, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as easy agglomeration, difficult recovery, strong adsorption, etc., and meet the reaction conditions Mild, easy to operate, uniform particle size effect

Inactive Publication Date: 2015-08-19
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing nanoparticles have the defects of strong adsorption, easy agglomeration, and difficult recovery. At the same time, their catalytic activity needs to be further improved, and the selectivity and sensitivity of using it as a sensing material also need to be further improved.

Method used

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  • Preparation method of phthalocyanin modified cerium dioxide nano particles
  • Preparation method of phthalocyanin modified cerium dioxide nano particles
  • Preparation method of phthalocyanin modified cerium dioxide nano particles

Examples

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Effect test

Embodiment 1

[0023] Weigh 0.1085g (about 0.25mM) Ce(NO 3 ) 3 ·6H 2 O was dissolved in 10 mL of deionized water to obtain a clear solution A for use. Weigh 5 mg of phthalocyanine and dissolve it in 10 mL of deionized water, and adjust the pH of the solution to ≈8 with NaOH to obtain solution B. The clear solution A and solution B were mixed and stirred for 30 min to obtain a mixed solution. Inject 200 μl HO with a microsampler 2 o 2 Afterwards, continue to stir for 30 minutes, then transfer to a reaction kettle, and heat at 150° C. for 6 hours. After cooling to room temperature, the product obtained was washed with NaOH (pH≈8) deionized water and absolute ethanol for 4 times by high-speed centrifugation. After washing, the product was transferred to a watch glass and dried at 60°C for 10 hours to obtain a dark yellow powder. Phthalocyanine-modified ceria nanoparticles. The product purity of the phthalocyanine-modified cerium dioxide nanoparticles is 100%, and the yield is 97.9%.

[...

Embodiment 2

[0026] Weigh 0.1085g (about 0.25mM) Ce(NO 3 ) 3 ·6H 2 O was dissolved in 10 mL of deionized water to obtain a clear solution A for use. Weigh 6 mg of phthalocyanine and dissolve it in 10 mL of deionized water, and adjust the pH of the solution to ≈8 with NaOH to obtain solution B. The clear solution A and solution B were mixed and stirred for 45 min to obtain a mixed solution. Inject 250 μl H with a microsampler 2 o 2 Afterwards, continue to stir for 30 minutes, then transfer to a reaction kettle, and heat at 140° C. for 7 hours. After cooling to room temperature, the product obtained was washed with NaOH (pH≈8) deionized water and absolute ethanol for 4 times by high-speed centrifugation. After washing, the product was transferred to a watch glass and dried at 70°C for 10 hours to obtain a dark yellow powder. Phthalocyanine-modified ceria nanoparticles. The product purity of the phthalocyanine-modified cerium dioxide nanoparticles is 100%, and the yield is 94.5%.

Embodiment 3

[0028] Weigh 0.1085g (about 0.25mM) Ce(NO 3 ) 3 ·6H 2 O was dissolved in 10 mL of deionized water to obtain a clear solution A for use. Weigh 4 mg of phthalocyanine and dissolve it in 10 mL of deionized water, and adjust the pH of the solution to ≈8 with NaOH to obtain solution B. The clear solution A and solution B were mixed and stirred for 30 min to obtain a mixed solution. Inject 180 μl HO with a microsampler 2 o 2 Afterwards, continue to stir for 30 minutes, then transfer to a reaction kettle, and heat at 160° C. for 5 hours. After cooling to room temperature, the product obtained was washed with NaOH (pH≈8) deionized water and absolute ethanol for 4 times by high-speed centrifugation. After washing, the product was transferred to a watch glass and dried at 65°C for 12 hours to obtain a dark yellow powder. Phthalocyanine-modified ceria nanoparticles. The product purity of the phthalocyanine-modified cerium dioxide nanoparticles is 100%, and the yield is 94.2%.

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Abstract

The invention discloses a preparation method of phthalocyanin modified cerium dioxide nano particles. The preparation method comprises the steps of selecting phthalocyanin and cerous nitrate hexahydrate as raw materials, dissolving the cerous nitrate hexahydrate in deionized water to obtain a clear solution A, dissolving the phthalocyanin in deionized water to obtain a solution B and regulating the pH value of the solution B to the range of 7.5-8.5, mixing the clear solution A with the solution B, stirring evenly to obtain a mixed solution, injecting H2O2 to the mixed solution, stirring evenly, and then transferring to the reaction kettle for a hydrothermal reaction, cooling to a room temperature after the reaction is completed, and then washing and drying to obtain the phthalocyanin modified cerium dioxide nano particles. According to the preparation method, the cerium dioxide is modified by use of the phthalocyanin; the obtained phthalocyanin modified cerium dioxide nano particles have the characteristics of high purity, small size, even particle size, good peroxidase activity and the like, and also has excellent stability and selectivity.

Description

technical field [0001] The invention relates to a preparation method of phthalocyanine-modified ceria nanoparticles, belonging to the technical field of preparation of nanocomposite materials. Background technique [0002] Hydrogen peroxide is the raw material and intermediate product of many industrial processes, and it is also produced in many enzyme-catalyzed reactions, including glucose oxidase, uric acid oxidase, cholesterol oxidase, alcohol oxidase, etc. The concentration of various target substances (such as glucose, ethanol, uric acid, etc.) can be indirectly measured by measuring the concentration of hydrogen peroxide, so the H 2 o 2 The determination of content has extremely important practical significance in food, clinical, pharmaceutical and environmental analysis. The development of a simple, stable, highly sensitive and selective hydrogen peroxide detection technology has become one of the current research hotspots. [0003] Since Yan Xiyun's research group...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00B82Y30/00
Inventor 刘青云张乐友杨艳亭孙丽芳丁艳园
Owner SHANDONG UNIV OF SCI & TECH
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