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A method for rapidly preparing composite metal oxide nano-film materials at low temperature

A technology of nano-film materials and composite metals, which is applied in the field of rapid preparation of various composite metal oxide nano-film materials at low temperature, can solve the problems of inability to produce composite metal oxides or nano-film materials, high temperature, and many steps, and achieve preparation The effect of low cost, fast reaction rate and simple preparation method

Active Publication Date: 2021-10-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method adopts the molten salt method to prepare nano-powder materials. In the preparation process, it is necessary to add dispersion carriers and templates to prepare metal oxides or composite metal oxides. The preparation process has many steps, high temperature, and long time. Unable to produce composite metal oxide or nano film materials

Method used

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  • A method for rapidly preparing composite metal oxide nano-film materials at low temperature
  • A method for rapidly preparing composite metal oxide nano-film materials at low temperature
  • A method for rapidly preparing composite metal oxide nano-film materials at low temperature

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Select size 4×2cm 2 The nickel foam is used as the substrate, and the substrate is removed with 15% hydrochloric acid to remove the oxide layer, and ultrasonically cleaned with deionized water, and completely dried in vacuum for later use; (2) 20g of sodium nitrate is melted at 350°C; (3) Sodium nitrate is completely melted Afterwards, add nickel foam and react for 3 seconds; (4) 0.05g manganese chloride and 0.05g ferric chloride are added in the reaction system of nickel foam and sodium nitrate, keep the temperature of the system constant, and continue to react for 60 seconds; (5) The FeMnO that step (4) obtains 3 After taking out the nickel foam nano film, it is cooled to room temperature, and is ultrasonically cleaned with deionized water; (6) the product after cleaning is completely dried to obtain FeMnO 3 / Foam nickel nano film material. The field emission scanning electron microscope photograph of gained nano film material is as figure 1 As shown, the surf...

Embodiment 2

[0039] (1) Select size 4×2cm 2 The titanium screen is used as the substrate, and the substrate is ultrasonically washed with absolute ethanol, and dried for later use; (2) 1 g of potassium nitrate is melted at 380 ° C; (3) after the potassium nitrate is completely melted, the titanium screen is added to react for 5 minutes; (4) 0.4g cupric chloride and 0.6 gram manganese chloride are added in the reaction system of titanium screen and potassium nitrate, raise temperature 10 ℃, react for 60 seconds; (5) CuMn that step (4) obtains 2 The O / titanium mesh nanofilm was taken out and cooled to room temperature, and cleaned ultrasonically with deionized water; (6) the cleaned product was completely dried to obtain CuMn 2 O / titanium mesh nano film material. The field emission scanning electron microscope photograph of gained nano film material is as figure 2 As shown, the surface morphology observation results show that the surface of the film is composed of nanosheets stacked to fo...

Embodiment 3

[0041] (1) Select size 4×2cm 2 (2) Melt 2.6g of potassium nitrate at 380°C; (3) Add carbon paper to react for 5 minutes after the potassium nitrate is completely melted; ( 4) Add 0.12g manganese sulfate and 0.08g cobalt nitrate to the reaction system of carbon paper and potassium nitrate, keep the temperature of the system constant, and continue to react for 10 seconds; (5) MnCo obtained in step (4) 2 The O / carbon paper nano film is taken out and cooled to room temperature, and ultrasonically cleaned with deionized water; (6) the product after cleaning is completely dried to obtain MnCo 2 O / carbon paper nanocloth film material. The field emission scanning electron microscope photograph of gained nano film material is as image 3 As shown, the surface morphology observation results show that the surface of the film is uniformly distributed nano-octahedral crystal grains, and the edge length of the octahedron is about 400nm and the width is about 100nm.

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Abstract

The invention discloses a method for rapidly preparing a composite metal oxide nano-film material at low temperature. The main steps include: making a low-melting-point salt in a molten state, adding a substrate in a container after melting, and reacting for a specific time; adding two kinds of metal sources , react for a predetermined time; take out the substrate and cool it to room temperature, and obtain a composite metal oxide nano-film material after cleaning and drying; wherein, the total mass ratio of the low-melting point salt to the metal source is 200-1:1. The composite metal oxide nano-film material 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 material can be used directly as an electrode, and can be applied in energy and environmental fields such as energy storage, catalysis, magnetic materials, desulfurization or air purification materials, and the production process does not require large-scale special equipment, and it is easy to realize industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of thin film materials, in particular to a method for rapidly preparing various composite metal oxide nano thin film materials at low temperature. Background technique [0002] Energy crisis and environmental pollution are the two most concerned themes in the world. Composite metal oxides are widely used in energy storage, environmental catalytic degradation, water quality separation, gas / liquid sensors, etc. The field has great application prospects. Nanomaterials have been widely studied because of their nanosize effect, that is, when their size is at the nanometer level, they exhibit different and more excellent properties than large-scale materials. Therefore, composite metal oxide materials with nanoscale dimensions, which have both excellent functionality and nanoscale effects, have far-reaching research potential. On the other hand, when it is specifically applied in the energy field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/48D06M11/49D06M11/42D06M11/44C23C18/12D06M101/40
CPCC23C18/1216C23C18/1241C23C18/1245D06M11/42D06M11/44D06M11/48D06M11/49D06M2101/40
Inventor 顾伊杰吴进明张怡玮
Owner ZHEJIANG UNIV
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