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Method for preparing porous nanometer metal film and porous nanometer metal film prepared by same

A nano metal film and metal technology, applied in metal material coating process, coating, liquid chemical plating and other directions, can solve the problems of difficult synthesis of nano metal films, high cost of physical sputtering equipment, and limited application scope.

Active Publication Date: 2014-11-05
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, researchers focus on the development of nano-metal powder preparation methods, but when it comes to recycling, distribution controllability and other issues, powder materials will encounter difficulties
On the premise of maintaining the advantages of nano-metal, nano-metal thin film materials have more obvious advantages in solving the above problems. However, the synthesis of nano-metal thin films is more difficult.
At present, the main methods used in patents and literatures related to nano-metal thin films include template method (see Chinese patent application 102247769A, Japanese patent 2007007745), electroplating method (see Chinese patent application 101550568A), physical sputtering method (see Korean patent application 2011056073A), etc. Among them, the template method involves multi-step reactions such as template synthesis and assembly, the electroplating method requires the substrate to be conductive and limits the scope of application, and the physical sputtering method has high equipment costs

Method used

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  • Method for preparing porous nanometer metal film and porous nanometer metal film prepared by same
  • Method for preparing porous nanometer metal film and porous nanometer metal film prepared by same

Examples

Experimental program
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Effect test

Embodiment 1

[0051]Dissolve 0.005 mol nickel oxalate dihydrate in 12 mol / L ammonia water acetone solution, then add 15 mL PMMA DMF solution into the nickel oxalate ammonia solution, and keep stirring to obtain a slurry with a certain viscosity. The slurry is dropped onto the surface of the cleaned alumina ceramics, and dried until the solvent is completely evaporated. The coating obtained after drying was heat-treated at 550° C. under the protection of an inert atmosphere for 2 hours to obtain a porous nano-metal nickel film.

[0052] figure 1 It is the X-ray diffraction pattern of the porous nickel film coated on the surface of alumina ceramics in this example. figure 1 The three sharp diffraction peaks (44.5°, 51.8° and 76.4°) shown in the middle solid circle correspond to metallic nickel (standard card library number: 04-0850), and the other peaks correspond to the characteristic peaks of alumina ceramics.

[0053] figure 2 It is a scanning electron micrograph and a transmission ele...

Embodiment 2

[0055] Dissolve 0.005 mol nickel tetracarbonyl in 12 mol / L ammonia water acetone solution, then add 15 mL PMMA DMF solution into the nickel tetracarbonyl ammonia solution, and keep stirring to obtain a slurry with a certain viscosity. The slurry was dropped onto the cleaned alumina surface, and dried under an infrared lamp until the solvent was completely evaporated. The sample obtained after drying was heat-treated for 2 hours under the protection of an inert atmosphere at 550° C. to form a porous nano-metal nickel film.

Embodiment 3

[0057] Dissolve 0.005 mol ferric oxalate dihydrate in 12 mol / L ammonia water acetone solution, then add 15 mL PMMA DMF solution into ferric oxalate ammonium aqueous solution, and keep stirring to obtain a slurry with a certain viscosity. Drop the slurry onto the cleaned alumina surface and dry until the solvent evaporates completely. The sample obtained after drying was heat-treated for 2 hours under the protection of an inert atmosphere at 550° C. to form a porous nano-metal iron film.

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Abstract

The invention relates to a method for preparing a porous nanometer metal film and the porous nanometer metal film prepared by the same and provides the method for preparing the porous nanometer metal film. The porous nanometer metal film consists of metal nanofirbers. The method comprises the following steps of: (a) adding metal salts into an aqueous solution of ammonia, continuously stirring to obtain uniform gel A, adding a polymer into organic solvent and continuously stirring to obtain a uniform solution B, wherein the polymer is a polymer which is completely decomposed at high temperature under the inert atmosphere and the organic solvent is a single solvent or mixed solvent for dissolving the polymer; (b) adding the uniform solution obtained in the step (a) into the uniform gel A and continuously stirring to obtain uniform slurry; (c) coating the slurry obtained in the step (b) on the surface of a solid substrate and drying to obtain a coating; and (d) thermally treating the coating obtained in the step (c) to obtain the porous nanometer metal film coated on the solid substrate.

Description

technical field [0001] The invention belongs to the field of functional materials, and relates to a method for preparing a porous nano-metal film and a porous nano-metal film prepared therefrom. The porous nano-metal film has the characteristics of high specific surface area and high electrical conductivity, and is suitable for various The type of substrate can be effectively used in catalysis, electrochemistry, sensors, absorbing devices and other related fields. Background technique [0002] Nano-metal materials are superior to bulk materials in many fields. For example, nano-nickel powder has a strong catalytic effect due to its large specific surface area and high activity, and can be used for hydrogenation of organic matter, automobile exhaust gas treatment, etc.; Powder supplemented with appropriate technology can produce electrodes with large surface area, which can greatly improve discharge efficiency; nano-precious metals can be used as sensors to detect special mol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/02C23C18/08
Inventor 温兆银胡英瑛吴相伟曹佳弟吴梅芬张敬超
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI