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A kind of preparation method of porous zinc oxide with three-dimensional structure

A porous zinc oxide, three-dimensional technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve environmental pollution and other problems, achieve simple and easy-to-control process, high specific surface area Large, high-quality effects

Inactive Publication Date: 2017-05-24
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In the prior art, in the hydrothermal synthesis process of the porous zinc oxide precursor, it needs to be carried out at a relatively high reaction temperature (usually 120°C-220°C); Diol, butanol, etc., are likely to cause environmental pollution

Method used

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  • A kind of preparation method of porous zinc oxide with three-dimensional structure
  • A kind of preparation method of porous zinc oxide with three-dimensional structure
  • A kind of preparation method of porous zinc oxide with three-dimensional structure

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Effect test

Embodiment 1

[0053] The preparation method of the porous zinc oxide with three-dimensional structure is characterized in that it comprises the following steps:

[0054] In the first step, according to the mass ratio of 1-3:1:1:2.5-10:0.9-2.8, respectively weigh 0.21g of zinc acetate, 0.2g of potassium sulfate, 0.2g of glycine, 0.5g of polyvinylpyrrolidone and 0.195g of ammonium carbonate ,spare;

[0055] In the second step, the zinc acetate, potassium sulfate, glycine and polyvinylpyrrolidone were mixed, and 20ml of deionized water was added as a solvent, and stirred to form solution A;

[0056] The third step is to add deionized water to the ammonium carbonate taken to prepare an ammonium carbonate solution with a mass percentage concentration of 1%; and add the above-mentioned ammonium carbonate solution to the above-mentioned solution A, stir evenly, and obtain a mixed solution B;

[0057] The fourth step is to pour the obtained mixed solution B into a polytetrafluoroethylene-lined sta...

Embodiment 2

[0070] The preparation method of the porous zinc oxide with three-dimensional structure is characterized in that it comprises the following steps:

[0071] In the first step, according to the mass ratio of 1-3: 1: 1: 2.5-10: 0.9-2.8, respectively weigh 0.63g of zinc acetate, 0.2g of potassium sulfate, 0.2g of glycine, 2g of polyvinylpyrrolidone and 0.585g of ammonium carbonate, spare;

[0072] In the second step, the zinc acetate, potassium sulfate, glycine and polyvinylpyrrolidone were mixed, and 20ml of deionized water was added as a solvent, and stirred to form solution A;

[0073] The third step is to add deionized water to the ammonium carbonate taken to prepare an ammonium carbonate solution with a mass percentage concentration of 3%; and add the above-mentioned ammonium carbonate solution to the above-mentioned solution A, stir evenly, and obtain a mixed solution B;

[0074] The fourth step is to pour the obtained mixed solution B into a polytetrafluoroethylene-lined s...

Embodiment 3

[0083] The preparation method of the porous zinc oxide with three-dimensional structure is characterized in that it comprises the following steps:

[0084] In the first step, according to the mass ratio of 1-3: 1: 1: 2.5-10: 0.9-2.8, respectively weigh 0.42g of zinc acetate, 0.2g of potassium sulfate, 0.2g of glycine, 1g of polyvinylpyrrolidone and 0.39g of ammonium carbonate, spare;

[0085] In the second step, the obtained zinc acetate, potassium sulfate, glycine and polyvinylpyrrolidone are mixed, and 40ml of deionized water is added as a solvent, stirred to form solution A;

[0086] The third step is to add deionized water to the ammonium carbonate taken to prepare an ammonium carbonate solution with a mass percentage concentration of 2%; and add the above-mentioned ammonium carbonate solution to the above-mentioned solution A, stir evenly, and obtain a mixed solution B;

[0087] The fourth step is to pour the obtained mixed solution B into a polytetrafluoroethylene-lined...

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Abstract

The invention discloses a method for preparing porous zinc oxide with a three-dimensional structure. It uses zinc acetate, potassium sulfate, glycine, polyvinylpyrrolidone and ammonium carbonate as raw materials, and is prepared through hydrothermal reaction in a hydrothermal reaction kettle. Precursor Zn5(CO3)2(OH)6; then, put the precursor in a muffle furnace and calcined at 450°C for 2 hours, the microscopic shape of microspheres is obtained, and each microsphere is composed of porous nanosheets It is a porous zinc oxide product with good dispersion. The preparation method of the present invention has the advantages of simple and easy-to-control process, green and environmental protection, and low manufacturing cost. The porous zinc oxide product has a three-dimensional structure, high quality level, large specific surface area, and novel internal structure, and is suitable for gas sensors, photoelectric equipment, optical Applications in technical fields such as catalysis have broad market prospects.

Description

technical field [0001] The invention relates to a method for preparing porous zinc oxide, in particular to a method for preparing porous zinc oxide with a three-dimensional structure. Background technique [0002] Zinc oxide is a typical N-type semiconductor. Due to its excellent physical and chemical properties, it has a wide range of applications in optoelectronic devices, gas sensors, solar cells and other fields. [0003] As a gas-sensing material studied earlier, zinc oxide has good thermal stability and excellent physical and chemical properties, and is currently one of the most widely used gas-sensing materials. Kiln atmosphere detection and other aspects have a wide range of applications. However, due to the complexity of the environment in which the gas sensor is used (such as temperature, humidity, and unstable gas composition, etc.), the sensitivity, selectivity and response recovery rate of the existing gas sensor need to be further improved. [0004] Zinc oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y30/00
CPCC01G9/02C01P2002/72C01P2004/24C01P2004/32C01P2004/50C01P2004/61C01P2006/12C01P2006/16C01P2006/17
Inventor 王新震刘久荣崔洪芝田健宋晓杰谢想李健
Owner SHANDONG UNIV OF SCI & TECH
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