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Flaky porous nanometer zinc oxide and preparation method thereof

A nano-zinc oxide, flake technology, applied in the field of nano-zinc oxide preparation, to achieve the effect of simple operation and simple process

Active Publication Date: 2016-02-03
郑州丰元冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few reports on the preparation of sheet-like porous nano-zinc oxide.

Method used

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  • Flaky porous nanometer zinc oxide and preparation method thereof
  • Flaky porous nanometer zinc oxide and preparation method thereof
  • Flaky porous nanometer zinc oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Sheet-shaped porous nano-zinc oxide, using zinc acetate and urea as reaction raw materials, first hydrothermally reacting under the action of sodium citrate to generate precursor zinc carbonate, and calcining zinc carbonate at a temperature of 600°C for 2 hours to obtain nano-zinc oxide.

[0034] Concrete preparation steps are as follows:

[0035] Precursor ZnCO 3 preparation of

[0036] 1) Add zinc acetate and urea to water, stir at room temperature for 10 minutes and mix well to obtain solution A;

[0037] The concentration of zinc acetate in solution A is 0.033mol / L, and the concentration of urea is 0.05mol / L;

[0038] 2) Add 0.3g of sodium citrate to 40mL of solution A, stir at room temperature for 30 minutes to obtain solution B;

[0039] 3) Move the solution B into a stainless steel reaction kettle, heat it to a temperature of 110°C, and keep it warm for 5 hours. After the reaction is completed, filter and separate the ZnCO 3 , washed with ethanol and deionize...

Embodiment 2

[0044] Sheet-shaped porous nano-zinc oxide, using zinc sulfate and urea as reaction raw materials, first hydrothermally reacting under the action of sodium citrate to generate precursor zinc carbonate, and calcining zinc carbonate at a temperature of 600°C for 1.5 hours to obtain nano-zinc oxide.

[0045] Concrete preparation steps are as follows:

[0046] Precursor ZnCO 3 preparation of

[0047] 1) Add zinc sulfate and urea to water, stir at room temperature for 15 minutes and mix well to obtain solution A;

[0048] The concentration of zinc sulfate in solution A is 0.067mol / L, and the concentration of urea is 0.1mol / L;

[0049] 2) Add 0.6 g of sodium citrate to 40 mL of solution A, stir at room temperature for 25 minutes and mix well to obtain solution B;

[0050] 3) Move the solution B into a stainless steel reaction kettle, heat it to a temperature of 110°C, and keep it warm for 5 hours. After the reaction is completed, filter and separate the ZnCO 3 , washed with etha...

Embodiment 3

[0054] Sheet-shaped porous nano-zinc oxide, using zinc chloride and urea as reaction raw materials, first hydrothermally reacted under the action of sodium citrate to generate precursor zinc carbonate, and the zinc carbonate was calcined at a temperature of 400°C for 2.5 hours to obtain nano-zinc oxide.

[0055] Concrete preparation steps are as follows:

[0056] Precursor ZnCO 3 preparation of

[0057] 1) Add zinc chloride and urea to water, stir at room temperature for 5 minutes and mix well to obtain solution A;

[0058] The concentration of zinc chloride in solution A is 0.033mol / L, and the concentration of urea is 0.05mol / L;

[0059] 2) Add 0.3 g of sodium citrate to 40 mL of solution A, and stir at room temperature for 35 minutes to obtain solution B;

[0060] 3) Move the solution B into a stainless steel reaction kettle, heat it to a temperature of 70°C, and keep it warm for 5 hours. After the reaction is completed, filter and separate the ZnCO 3 , washed with ethan...

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Abstract

The invention discloses flaky porous nanometer zinc oxide and a preparation method thereof and belongs to the technical field of nanometer zinc oxide preparation. The preparation method comprises the steps that zinc salt and urea serve as reaction raw materials, firstly, a hydrothermal reaction is conducted under the action of a template agent sodium citrate for generating a precursor zinc carbonate, zinc carbonate is calcinated for 4-6 hours at the temperature of 400-600 DEG C in a heat-preservation mode, nanometer zinc oxide particles which are good in dispersion and flacky and porous in morphology are obtained, the particle size of each particle is 2-10 micrometers, the thickness is 0.2-1 micrometer, the pore diameter is 50-300 micrometers, and the flaky porous nanometer zinc oxide can be widely applied to aspects such as gas-sensitiveness, catalysis, voltage dependent resistors and electromagnetic absorption. According to the flaky porous nanometer zinc oxide and the preparation method thereof, a hydrothermal method and a calcining method are combined for preparing the flaky porous nanometer zinc oxide particles, the process is simple, operation is easy and convenient to conduct, the flake thickness and pore diameter can be adjusted, and characteristics such as gas-sensitivity and electromagnetic absorption can be effectively controlled.

Description

technical field [0001] The invention relates to a sheet-like porous nano-zinc oxide and a preparation method of the nano-zinc oxide, which belongs to the technical field of nano-zinc oxide preparation. Background technique [0002] The particle size of nano-zinc oxide is between 1 and 100nm. It is a new type of high-function fine inorganic product facing the 21st century. It exhibits a variety of special properties, such as non-migration, fluorescence, piezoelectricity, absorption And the ability to scatter ultraviolet rays, etc., using its wonderful properties in light, electricity, and magnetic sensitivity, it can be used to manufacture gas sensors, phosphors, varistors, ultraviolet shielding materials, image recording materials, piezoelectric materials, piezoresistors, and high-efficiency catalysts , magnetic materials and plastic films, etc. [0003] The synthesis methods of nano-zinc oxide mainly include physical method, sol-gel method, precipitation method and hydroth...

Claims

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Application Information

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IPC IPC(8): C01G9/03B82Y30/00B82Y40/00
Inventor 范冰冰张锐赵彪马超邵刚陈德良王海龙许红亮卢红霞
Owner 郑州丰元冶金材料有限公司
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