Microwave plasma reaction device for preparing nano-material

Abstract

The invention relates to a microwave plasma reaction device for preparing nano-materials, and belongs to the technical field of microwave application. The reaction device comprises a rectangular waveguide, a plasma excitation device, a reactor and a collector. Sealing gaskets are disposed at two sides of the rectangular waveguide, and are used for forming closed gas environment in the reactor. The plasma excitation device comprises an outer adjusting column, an inner adjusting column, and a housing; the outer adjusting column is in threaded connection with the rectangular waveguide; the inner adjusting column is provided with a water circulation cooling system and a working gas channel; working gas reaches an area with high field intensity at a tip below the inner adjusting column through the channel to generate plasma; and the plasma is ejected into the reactor through a plasma outlet on the rectangular waveguide under the action of gas flow. The lower part of the reactor is connected with the collector, and the collector collects and purifies the nano-materials. The reaction device is suitable for continuous working at normal temperature and normal pressure; nano-materials with high purity and high quality are generated; and the reaction device has very good industrial application prospects.

Description

technical field [0001] The invention relates to a microwave plasma reaction device for preparing nanometer materials, belonging to the technical field of microwave applications. Background technique [0002] As one of the three key technologies for mankind in the 21st century, material technology is the "cradle" for new technologies and products in various fields, and the emergence of nanotechnology has created a new era of material science research. When material particles reach the nanometer scale, in the size range of 0.1 to 100 nanometers, the electronic structure and crystal structure of the surface will change, resulting in surface effects, small size effects, quantum effects, macroscopic quantum tunneling effects, and interface effects. This kind of material composed of particles with special properties different from atoms, molecules, and macroscopic substances is called nanomaterials. Nanomaterials have excellent properties in terms of structure, light, electricity...

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Problems solved by technology

[0004] At present, microwave plasma generating devices that can be used to prepare nanomaterials are still rare, especially devices that can work under normal temperature and pressure and are convenient for industrial application have not yet been popularized.

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