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A kind of molten salt method prepares the method for metal oxide or metal hydroxide nano film material

A nano-film material, hydroxide technology, applied in the directions of nickel oxide/nickel hydroxide, manganese oxide/manganese hydroxide, copper oxide/copper hydroxide, etc., can solve the problems of long time, high temperature, and many steps, etc. To achieve the effect of enhancing fluidity, simple preparation method and strong adhesion

Active Publication Date: 2020-11-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts the molten salt method to prepare a kind of nano powder material, and in the preparation process, it is necessary to add a dispersion carrier and a template agent to prepare a metal oxide or a metal composite oxide. The preparation process has many steps, high temperature and long time.

Method used

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  • A kind of molten salt method prepares the method for metal oxide or metal hydroxide nano film material
  • A kind of molten salt method prepares the method for metal oxide or metal hydroxide nano film material
  • A kind of molten salt method prepares the method for metal oxide or metal hydroxide nano film material

Examples

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Effect test

Embodiment 1

[0035] (1) Select size 4×2cm 2 The foamed nickel as the substrate, the substrate is removed with 10% hydrochloric acid, and the substrate is ultrasonically washed with deionized water, and dried completely in vacuum for use; (2) Melt 10g of sodium nitrate at 350°C; (3) Melt the sodium nitrate completely Then add foamed nickel to react for 1 minute; (4) add 0.1g of manganese sulfate to the reaction system of foamed nickel and sodium nitrate, keep the system temperature unchanged, and continue to react for 1 minute; (5) add the oxidation obtained in step (4) The manganese / nickel foam nano film is taken out and cooled to room temperature, and ultrasonically cleaned with deionized water; (6) the cleaned product is completely dried to obtain a manganese oxide / nickel foam nano film material. The field emission scanning electron microscope photograph of the obtained nano film material is as follows figure 1 As shown, the observation results of the surface morphology show that the surfa...

Embodiment 2

[0037] (1) Select size 4×2cm 2 The carbon cloth is the substrate, and the substrate is ultrasonically washed with deionized water and dried for later use; (2) Melt 4.3 g of potassium nitrate at 380°C; (3) After the potassium nitrate is completely melted, add the carbon fiber cloth to react for 2 minutes; 4) Add 2.9g of copper chloride to the reaction system of carbon cloth and potassium nitrate, raise the temperature by 10°C, and react for 30 seconds; (5) Take out the copper oxide / carbon fiber cloth nano film obtained in step (4) and cool it To room temperature, and ultrasonically clean with deionized water; (6) completely dry the cleaned product to obtain a copper oxide / carbon cloth nano-film material. The field emission scanning electron microscope photograph of the obtained nano film material is as follows figure 2 As shown, the observation results of the surface morphology show that the surface of the film is nanoparticles that grow head-to-tail, and the nanostructure layer...

Embodiment 3

[0039] (1) Select size 4×2cm 2 The carbon cloth is the substrate, and the substrate is ultrasonically washed with deionized water and dried for later use; (2) Melt 2.6 g of potassium nitrate at 380°C; (3) After the potassium nitrate is completely melted, add the carbon fiber cloth to react for 10 minutes; 4) Add 0.17g of copper nitrate to the reaction system of carbon cloth and potassium nitrate, keep the temperature of the system unchanged, and continue to react for 10 seconds; (5) Take out the copper oxide / carbon fiber cloth nano film obtained in step (4) and cool it To room temperature, and ultrasonically clean with deionized water; (6) completely dry the cleaned product to obtain a copper oxide / carbon cloth nano cloth film material. The field emission scanning electron microscope photograph of the obtained nano film material is as follows image 3 As shown, the observation result of the surface morphology shows that the surface of the film is uniformly distributed nanorods, ...

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Abstract

The invention discloses a method for preparing a metal oxide or metal hydroxide nano film material by a molten salt method. The main steps include: heating to make the low melting point salt into a molten state, adding a substrate to the molten salt before or after melting, Carry out the reaction; add the metal source again, and continue the reaction for a period of time; take out the substrate and cool it to room temperature, and obtain a metal oxide or metal hydroxide nano-film material after cleaning and drying; wherein, the mass ratio of the low melting point salt to the metal source is 100 ~1.5:1. The metal oxide and metal hydroxide nano-film materials with various nano-morphologies prepared by the method of the invention can be regulated by the types and ratios of low-melting-point salts and metal sources. The prepared nano-film materials can be directly used as electrodes, and can be applied in energy and environmental fields such as energy storage, catalysis, ion exchange, separation materials, magnetic materials, oxidative degradation materials, desulfurization or air purification materials, and the production process does not require large-scale dedicated equipment, easy to realize industrial production.

Description

Technical field [0001] The invention belongs to the technical field of thin film material preparation, and specifically relates to a method for preparing multiple metal oxide or metal hydroxide nano thin film materials by a molten salt method. Background technique [0002] Metal oxides and metal hydroxides have redox activity, variable valence and good stability, and have huge application potential and prospects in the fields of energy storage, catalysis, separation, and sensing. Nanomaterials have been extensively studied because of their excellent characteristics different from those of large-size materials. Especially in the field of energy storage, metal oxides and metal hydroxides can provide higher energy density than traditional carbon capacitors and higher cycle stability than polymers. The energy storage methods of metal oxides and hydroxides include both It forms an electric double layer structure like a carbon electrode, and can form a Faraday pseudocapacitance electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02C23C18/12C01G45/02C01G53/04C01B32/05B82Y40/00
CPCC01G3/02C23C18/1216C01G45/02C01G53/04C01B32/05B82Y40/00C01P2002/72C01P2004/03Y02E60/13C01B13/18C23C8/42C23C8/80C23C2/50C23C2/04
Inventor 顾伊杰吴进明
Owner ZHEJIANG UNIV
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