Method for preparing magnesium hydroxide two-dimensional nano-sheets through rapid precipitation

A magnesium hydroxide and two-dimensional nanotechnology, which is applied in the field of rapid precipitation to prepare two-dimensional magnesium hydroxide nanosheets, achieves the effects of stable quality, simple operation and novel product morphology.

Inactive Publication Date: 2019-09-20
辽宁星空新能源发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at the same time, the rapid crystallization of the precipitation reaction makes it very challenging to prepare and control nanomaterials along specific dimensions: such as two-dimensional nanomaterials.

Method used

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  • Method for preparing magnesium hydroxide two-dimensional nano-sheets through rapid precipitation
  • Method for preparing magnesium hydroxide two-dimensional nano-sheets through rapid precipitation

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Experimental program
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Effect test

Embodiment 1

[0018] The invention provides a method for rapidly precipitating two-dimensional nanosheets of magnesium hydroxide. This method uses Mg(NO 3 ) 2 and NaHCO 3 As a raw material, the liquid phase precipitation method is used to synthesize, and it is realized by the following technical side:

[0019] At 65°C, 520 g of 0.19% Mg(NO 3 ) 2 ·6H 2 O and 480 g of 0.42% NaHCO 3 Dissolve in water, continue to stir 10 minutes with 300r / min; Gained mixed material is with 5000r / min, centrifugation 5 minutes with high-speed centrifuge; Gained light white precipitate is cleaned 3 times with 96% ethanol; Gained material is in 60 °C for 12 hours to obtain magnesium hydroxide two-dimensional nanosheets.

[0020] XRD results such as figure 1 The product structure is magnesium hydroxide, and the appearance is as follows figure 2 As shown, it is a nano-scale sheet structure, and the width of the nano-sheet is about 500 nm.

Embodiment 2

[0022] The invention provides a method for rapidly precipitating two-dimensional nanosheets of magnesium hydroxide. This method uses Mg(NO 3 ) 2 and NaHCO 3 As a raw material, the liquid phase precipitation method is used to synthesize, and it is realized by the following technical side:

[0023] At 65°C, 540 g of 0.38% Mg(NO 3 ) 2 ·6H 2 O and 460 g of 0.50% NaHCO 3 Dissolve in water, continue to stir 10 minutes with 300r / min; Gained mixed material is with 5000r / min, centrifugation 5 minutes with high-speed centrifuge; Gained light white precipitate is cleaned 3 times with 96% ethanol; Gained material is in 60 °C for 12 hours to obtain magnesium hydroxide two-dimensional nanosheets.

Embodiment 3

[0025] The invention provides a method for rapidly precipitating two-dimensional nanosheets of magnesium hydroxide. This method uses Mg(NO 3 ) 2 and NaHCO 3 As a raw material, the liquid phase precipitation method is used to synthesize, and it is realized by the following technical side:

[0026] At 65°C, 580 g of 0.58% Mg(NO 3 ) 2 ·6H 2 O and 420 g of 0.59% NaHCO 3 Dissolve in water, continue to stir 10 minutes with 300r / min; Gained mixed material is with 5000r / min, centrifugation 5 minutes with high-speed centrifuge; Gained light white precipitate is cleaned 3 times with 96% ethanol; Gained material is in 60 °C for 12 hours to obtain magnesium hydroxide two-dimensional nanosheets.

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Abstract

The invention provides a method for preparing magnesium hydroxide two-dimensional nano-sheets through rapid precipitation. According to the present invention, the method is efficient, rapid and simple, and further has other characteristics, overcomes the problem of two-dimensional nanometer material regulating caused by the rapid crystallization of the precipitation reaction, and prepares a two-dimensional nanometer material Mg(OH)2; the target material is quickly precipitated by using sodium bicarbonate as a precipitant, wherein NaHCO3 has a low dissociation coefficient, and can slowly release OH<-> ions so as to balance the growth rate and the diffusion speed of the material, such that the material can directionally grow in a two-dimensional direction during the growth; and the invention provides a morphology and phase regulation method of Mg(OH)2 nano-sheets with excellent properties, wherein the method has advantages of low cost, fast reaction, mild and easily controlled reaction, energy saving, environmental protection, high product purity, novel product morphology and the like.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for rapidly precipitating two-dimensional nanosheets of magnesium hydroxide. Background technique [0002] Magnesium Hydroxide (Mg(OH) 2 ) belongs to metal hydroxide, because of its special crystal structure and its derived oxides, this substance has a wide range of potential applications in many fields such as energy storage, flame retardancy, electrode coating, and catalysis. The rapid mass preparation of the electrode material preparation and ion conductor material synthesis has a wide range of applications. In particular, its special two-dimensional structure has directional electron ion conduction direction, strong stress bearing capacity and short axial ion transport path, which is considered to be a very important branch of nanomaterials. Existing preparation of two-dimensional Mg(OH) 2 The method of nanometer material mainly is to utilize lye,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/14B82Y30/00B82Y40/00
CPCC01F5/14B82Y30/00B82Y40/00C01P2002/72C01P2004/03C01P2004/62
Inventor 赖伟鸿李用成宫毅涛刚勇李亚书李东祥王绍才
Owner 辽宁星空新能源发展有限公司
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