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Preparation of multicomponent nano material by ultrasonic spray technology

A technology of nanomaterials and ultrasonic spraying, which is applied in the direction of spray evaporation, liquid separation into beads and granulation, etc. It can solve the problems of not being able to further obtain doped nanomaterials and single mass blocks, and achieve the effect of uniform particle size

Inactive Publication Date: 2005-09-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, it is difficult to dope most semiconductor materials by chemical methods, and it is impossible to obtain a single mass with arbitrarily changed doping amount, and it is impossible to further obtain doped nanomaterials.

Method used

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  • Preparation of multicomponent nano material by ultrasonic spray technology
  • Preparation of multicomponent nano material by ultrasonic spray technology

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Example 1: Preparation of SnO by Ultrasonic Spray Technology 2 -ZnO nanomaterials

[0020] SnCl 4.5 h 2 O 0.5mol / L and zinc acetate 0.2mol / L were dissolved in 90ml of purified water, and 10ml of ethanol was added. Add a small amount of acetic acid to adjust the pH value to 5-7. Stir until there is no precipitate in the solution. Pour the prepared reaction precursor solution into a plastic container, and vibrate the reaction solution with an ultrasonic oscillator. Adjust the power of the ultrasonic oscillator so that the generated mist is larger. Use industrial oxygen as the carrier gas to carry the mist into the pipeline, so that the mist can undergo pyrolysis and oxidation reactions. The reaction temperature is between 300°C and 500°C, and an appropriate temperature is selected. The temperature is closely related to the fog concentration and the flow rate of the carried gas. By adjusting temperature, mist concentration and gas flow, SnO can be obtained 2 - ZnO...

Embodiment 2

[0021] Embodiment 2 prepares nanometer (NH 4 ) 3 SnCl 6 Material

[0022] SnCl 4.5 h 2 O 1mol / L and NH 4 F 0.8mol / L dissolved in 100ml ethanol. Stir until there is no precipitate in the solution. Pour the prepared reaction precursor solution into a plastic container, and vibrate the reaction solution with an ultrasonic oscillator. Adjust the power of the ultrasonic oscillator so that the generated mist is larger. Use industrial nitrogen as the carrier gas to carry the mist into the pipeline, so that the mist can undergo pyrolysis and oxidation reactions. The reaction temperature is between 250°C and 350°C, and an appropriate temperature is selected. SnCl 4.5 h 2 O contains 5 water molecules. In order to prevent the pyrolyzed oxygen from participating in the reaction, special attention should be paid to adjusting the gas concentration and flow rate so that the gas can quickly pass through the heating zone at an appropriate temperature. Deposited (NH 4 ) 3 SnCl 6 ...

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Abstract

The invention relates to plural groups of nanometer materials for ultrasonic spraying technology preparation, which belongs to a new-type material. The invention makes use of the well-proportioned fogdrops of the ultrasonic spraying technology to make the grains of creature consistent. And meanwhile, add unit metal salt and plural metal salt in the reaction agent of the ultrasonic spray and the proportion added can be adjusted. The metal salts appended do not take mutually chemical reaction. Through the adjustment of the prescription of the reaction agent of the ultrasonic spray and the improvement of the spray pyrogenation device prepare the plural nanometer material and the nanometer material with special function. The method of the invention can be used in catalyzing and sensor.

Description

A technical field [0001] The invention belongs to the field of new materials. Two background technology [0002] In the field of material science, materials named after "nano" appeared in the 1980s, when German scientist Gleiter first successfully prepared nanometer-sized metal ultraparticles. The more fascinating properties of force, heat, sound, light, electricity, and magnetism have set off an upsurge in nano research in the field of material science and even the entire scientific and technological community. The concept of "nano" has no precise definition, and the current consensus refers to materials with a particle size in the range of 1 to 100 nm. Nanoparticles have characteristics such as small size effect, surface and interface effect, quantum size effect, macroscopic quantum tunneling effect, Coulomb blockade and quantum tunneling, and dielectric confinement effect. The solid composed of nanoparticles has macroscopic physical properties such as high strength and ...

Claims

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Application Information

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IPC IPC(8): B01D1/18B01J2/04
Inventor 雷智冯良桓张静全
Owner SICHUAN UNIV
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