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A kind of preparation method of transparent monodisperse nano zirconia liquid phase dispersion with controllable morphology

A technology of nano-zirconia and liquid-phase dispersion, which is applied in the field of nano-materials, can solve problems such as inapplicability, and achieve the effect of high transmittance and high purity

Active Publication Date: 2020-11-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the zirconia particles in the nano-zirconia liquid dispersion are not monodisperse and are hydrophilic particles, which are not suitable for some occasions that require lipophilic particles

Method used

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  • A kind of preparation method of transparent monodisperse nano zirconia liquid phase dispersion with controllable morphology
  • A kind of preparation method of transparent monodisperse nano zirconia liquid phase dispersion with controllable morphology
  • A kind of preparation method of transparent monodisperse nano zirconia liquid phase dispersion with controllable morphology

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preparation example Construction

[0049] A method for preparing a transparent monodisperse nano-zirconia liquid phase dispersion with controllable morphology of the present invention comprises the following steps:

[0050] 1) Using water as a solvent, adding zirconium salt to it to prepare a zirconium salt solution;

[0051] 2) Using water as a solvent, adding a hydrolysis accelerator to prepare a hydrolysis accelerator solution;

[0052] 3) mixing the zirconium salt solution and the hydrolysis accelerator solution to obtain a reaction solution;

[0053] 4) washing the reaction solution, and dispersing the precursor into water after washing to obtain an aqueous phase precursor dispersion;

[0054] 5) taking an organic solvent as a solvent, adding a surfactant to it to prepare a surfactant solution;

[0055] 6) mixing the precursor dispersion and the surfactant solution, and hydrothermally treating it; obtaining nano zirconia particles;

[0056] 7) After the hydrothermal treatment, the obtained nano-zirconia...

Embodiment 1

[0076] A method for preparing a transparent monodisperse nano-zirconia liquid phase dispersion with controllable morphology, comprising the following steps:

[0077] 1) 4.87g of zirconium acetylacetonate was dissolved in 100ml of methanol to obtain a zirconium acetylacetonate solution;

[0078] 2) Dissolve 0.4g of sodium hydroxide in 100ml of methanol to obtain a sodium hydroxide solution;

[0079] 3) Add the zirconium acetylacetonate solution dropwise to the sodium hydroxide solution, control the reaction temperature to 10°C, stir at a rate of 500r / min, adjust and control the final pH of the reaction system to 7 with the sodium hydroxide solution;

[0080] 4) After reaching the final pH requirement of the reaction system, centrifuge the reaction solution at 5000r / min for 5min, wash 5 times with water and 2 times with ethanol, and ultrasonically disperse the washed precursor precipitate in 10g of ethanol to obtain Precursor dispersion;

[0081] 5) 0.8g capric acid was dissol...

Embodiment 2

[0087] A method for preparing a transparent monodisperse nano-zirconia liquid phase dispersion with controllable morphology, comprising the following steps:

[0088] 1) 8g of zirconium acetylacetonate was dissolved in 100ml of ethanol to obtain a zirconium acetylacetonate solution;

[0089] 2) Dissolve 0.3g potassium hydroxide in 100ml ethanol to prepare sodium hydroxide solution;

[0090] 3) Add the zirconium acetylacetonate solution dropwise to the potassium hydroxide solution, control the reaction temperature to 20°C, and the stirring rate to 400r / min, adjust and control the final pH of the reaction system to 6 with the potassium hydroxide solution;

[0091] 4) After reaching the final pH requirement of the reaction system, the reaction solution was filtered and washed with water for 5 times, and the washed precursor precipitate was ultrasonically dispersed in 28 g of water to obtain a precursor dispersion;

[0092] 5) 1.4g of sodium oleate was dissolved in 20ml of ethanol...

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Abstract

The invention discloses a preparation method of a morphology-controllable transparent monodisperse nano-zirconia liquid phase dispersion. The preparation method comprises the following steps: adding azirconium salt to water used a solvent to prepare a zirconium salt solution; adding a hydrolysis promoter to water used as a solvent to prepare a hydrolysis promoter solution; mixing the zirconium salt solution with the hydrolysis promoter solution to obtain a reaction solution; washing the reaction solution, and dispersing the washed precursor to water to obtain a precursor dispersion; adding asurfactant to an organic solvent used as a solvent to prepare a surfactant solution; mixing the precursor dispersion with the surfactant solution, and hydrothermally treating the obtained mixture to obtain nano-zirconia particles; and washing the hydrothermally treated nano-zirconia particles, and dispersing the washed hydrothermally treated nano-zirconia particles in a liquid phase medium to obtain the product. The nano-zirconia particles in the dispersion are lipophilic nano-particles, and have a one-dimensional size of 1-30 nm; and the liquid phase dispersion has the monodispersity, and stands for 6 months without settling.

Description

technical field [0001] The invention relates to the technical field of nanometer materials. More specifically, it relates to a preparation method of a transparent monodisperse nano zirconia liquid phase dispersion, especially a preparation method of a transparent monodisperse nano zirconia liquid phase dispersion with controllable morphology. Background technique [0002] Nano zirconia has the characteristics of high melting point (2700°C), high boiling point, low thermal conductivity, small thermal expansion coefficient, good wear resistance, high refractive index, and excellent corrosion resistance. It can be widely used in fuel cells, heat insulation, information , electronics, bionic materials, functional ceramics, gem industry, catalyst industry, solid electrolyte and environmental protection and other fields. The refractive index of the material can be adjusted by using nano-zirconia, which is very valuable for optical lenses, solar cells, broadcasting materials, anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G25/02B82Y40/00
CPCB82Y40/00C01G25/02C01P2002/72C01P2004/04C01P2004/64
Inventor 王洁欣夏怡王丹曾晓飞蒲源陈建峰
Owner BEIJING UNIV OF CHEM TECH