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Method for preparing zinc oxide composite material

A technology of composite materials and zinc oxide, which is applied in the field of structural materials, can solve problems such as difficult control, unfavorable appearance and defects of zinc oxide composite materials, and waste of energy, so as to reduce energy consumption and production costs, save energy consumption and protect equipment requirements, the effect of simplifying the preparation process

Inactive Publication Date: 2011-05-18
ZHENGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The co-precipitation method has the advantages of simple process and good repeatability, but its calcination temperature generally exceeds 300 ° C, and when the calcination temperature is high, it is easy to form Zn 2 SnO 4 , not only wastes energy, but also has adverse and uncontrollable effects on the morphology and defects of zinc oxide composites

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  • Method for preparing zinc oxide composite material
  • Method for preparing zinc oxide composite material
  • Method for preparing zinc oxide composite material

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preparation example Construction

[0038] A kind of preparation method of zinc oxide composite material provided by the invention, it comprises following steps:

[0039] Dissolve 0.03-0.15g of ZnO powder with a flower-like structure dispersed in 30ml of absolute ethanol solvent to prepare a ZnO suspension with a concentration of 1.0-5.0g / L, and put the obtained ZnO suspension into an ultrasonic cleaner for ultrasonication Disperse for 20 to 60 minutes, add SnCl with Zn / Sn molar ratios of 1:1, 1:2, 2:1 4 ·5H 2 O was dissolved in 20ml deionized water to make SnCl 4 ·5H 2 O solution; the Sn 4+ / OH - Dissolve NaOH with molar ratios of 1:8, 1:10, 1:12, and 1:14 in 20ml of deionized water to obtain NaOH solution;

[0040] Mix the NaOH solution and add it dropwise to the SnCl under magnetic stirring conditions 4 ·5H 2 Obtain a clear and transparent solution in the O solution, and add 0.1~0.5g hexadecyltrimethylammonium bromide to the clear solution, after continuous stirring for 5~15min, the ZnO suspension that...

Embodiment 1

[0046] Dissolve, disperse 0.03g of flower-shaped ZnO powder in 30ml of absolute ethanol solvent to prepare a suspension with a concentration of 1.0g / L, and put the resulting ZnO suspension into an ultrasonic cleaner for ultrasonic dispersion for 20min for use , while the Zn / Sn molar ratio is 1:1 SnCl 4 ·5H 2 Dissolve O in 20ml deionized water to obtain SnCl 4 ·5H 2 O solution, the Sn 4+ / OH - Dissolve NaOH with a molar ratio of 1:8 in 20ml deionized water to obtain a corresponding concentration of NaOH solution;

[0047] Mixed, the resulting NaOH solution was added dropwise to the SnCl under magnetic stirring conditions 4 ·5H 2 A clear transparent solution was obtained in the solution of O, and 0.10 g of hexadecyltrimethylammonium bromide was added to the obtained clear solution, and after continuous stirring for 5 min, the ultrasonic ZnO suspension was added dropwise to the above obtained The final mixed solution is obtained in the solution, and finally the mixed solut...

Embodiment 2

[0053] Dissolve, disperse 0.09g of flower-shaped ZnO powder in 30ml of absolute ethanol solvent to prepare a suspension with a concentration of 3.0g / L, and put the resulting ZnO suspension into an ultrasonic cleaner for ultrasonic dispersion for 30min for use , while the Zn / Sn molar ratio is 1:1 SnCl 4 ·5H 2 O was dissolved in 20ml deionized water to obtain SnCl 4 ·5H 2 O solution, the Sn 4+ / OH - Dissolve NaOH with a molar ratio of 1:10 in 20ml deionized water to obtain a NaOH solution of corresponding concentration;

[0054] Mixed, the resulting NaOH solution was added dropwise to the SnCl under magnetic stirring conditions 4 ·5H 2 A clear transparent solution was obtained in a solution of O, and 0.2 g of hexadecyltrimethylammonium bromide was added to the resulting clear solution, and after continuous stirring for 8 min, the ultrasonic ZnO suspension was added dropwise to the above obtained The final mixed solution is obtained in the solution, and finally the mixed s...

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Abstract

The invention discloses a method for preparing a zinc oxide composite material. The method comprises the following steps of: dissolving, namely dispersing ZnO powder in an absolute ethanol solvent to prepare ZnO suspension with concentration of between 1.0 and 5.0g / L; dissolving SnCl4.5H2O with Zn / Sn molar ratio of 1 to 1, 1 to 2 and 2 to 1 into deionized water to prepare SnCl4.5H2O solution respectively; dissolving NaOH with Sn4<+> / OH<-> molar ratio of 1 to 8, 1 to 10, 1 to 12 and 1 to 14 into deionized water to prepare NaOH solution respectively; mixing; dropwise adding the NaOH solution into the SnCl4.5H2O solution to prepare clear transparent solution; adding cetyl trimethyl ammonium bromide into the solution, stirring, dropwise adding the ZnO suspension into the solution, and transferring mixed solution into a reaction kettle; performing hydrothermal reaction, namely placing the reaction kettle in a drying box to perform the hydrothermal reaction, and naturally cooling in the drying box; separating, namely performing centrifugal separation on obtained precipitate, and washing by using the deionized water and / or the ethanol to obtain white powder; and drying, namely drying the powder obtained by the centrifugal washing in the drying box to prepare the zinc oxide composite material.

Description

technical field [0001] The invention relates to a preparation method of a zinc oxide composite material, belonging to the technical field of structural materials. Background technique [0002] Zinc oxide belongs to II-VI group wide bandgap direct bandgap compound semiconductor material, the bandgap width at room temperature is 3.37eV, and the exciton binding energy is 60meV, which is far greater than the dissociation energy at room temperature. The stable phase of ZnO at room temperature is the wurtzite structure. The crystal structure of wurtzite belongs to the hexagonal system and belongs to P6 3 The mc space group, whose lattice constant is, a 0 = 0.32533nm, c 0 =0.52073nm, Z=2. The structure of ZnO can be simply described as the alternating arrangement of Zn atomic planes and O atomic planes along the c-axis, where O 2- and Zn 2+ For tetrahedral ligands. Among them, O 2- Arranged in hexagonal close packing, Zn 2+ Filling in 1 / 2 of the tetrahedral voids, the coor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/626
Inventor 卢红霞於秀君赵云龙陈德良王海龙许红亮杨道媛张锐
Owner ZHENGZHOU UNIV
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