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Laser-assisted nano-particle preparation method, and apparatus thereof

A nanoparticle, laser-assisted technology, applied in the direction of microsphere preparation, microcapsule preparation, chemical/physical/physicochemical process of energy application, etc., can solve the problem of high cost of nanoparticle preparation, uncontrollable shape and size, poor stability, etc. problems, to achieve the effect of reducing production costs, high product quality reliability, and good stability

Inactive Publication Date: 2014-02-19
李学耕 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of high preparation cost, low purity, poor stability, and uncontrollable shape and size of nanoparticles in the prior art, the present invention provides a method for laser-assisted preparation of nanoparticles. The method is simple to operate, low in cost, and the prepared Nanoparticles have high purity, good stability, uniform shape and particle size, and can be widely used in the preparation of various metal or non-metallic nanoparticles

Method used

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  • Laser-assisted nano-particle preparation method, and apparatus thereof
  • Laser-assisted nano-particle preparation method, and apparatus thereof
  • Laser-assisted nano-particle preparation method, and apparatus thereof

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Embodiment 1

[0026] Taking the preparation of silicon nanoparticles as an example, the method for preparing nanoparticles of the present invention will be described. The preparation of silicon nanoparticles is based on organic precursors of silicon, such as silane, such as but not limited to: SiH 4 、Si 2 h 6 、Si 3 h 8 etc.; chlorosilanes such as SiH 2 Cl 2 , SiHCl 3 、SiCl 4 、Si 2 Cl 6 Wait.

[0027] The organic precursor gas of silicon enters the plasma generator through the gas introduction device, and enters the reaction chamber after being activated by the plasma generator. In the reaction chamber, the laser beam emitted by the laser beam is heated, and the organic silicon is cracked to produce Silicon nanoparticles are collected by a collection device above the reaction chamber. In addition, the protective gas H 2 and sensitizing gas SF 6 , H 2 Confine the reactive gas and sensitizing gas near the center of the reaction chamber to prevent them from accumulating in the cor...

Embodiment 2

[0033] The present invention will be further described by taking the preparation of copper indium gallium selenide nanoparticles as an example.

[0034] Copper indium gallium selenide nanoparticles are compounds composed of various elements, and the precursor gases include organic copper, organic indium, organic gallium, and selenium vapor. For example, copper-containing organic precursors include, but are not limited to: Cu(C 11 h 19 o 2 ) 2 , Cu(CF 3 COCHCOCF 3 ) 2 , (C 5 h 5 )CuP(C 2 h5 ) 3 , Cu(CF 3 COCHCOCH 3 ) 2 , Cu(CF 3 COCHCOCF 3 )P(CH 3 ) 3 etc.; Indium-containing organic precursors include, but are not limited to: triphenylindium (C 18 h 15 In), triphenylpyridine indium (C 23 h 20 InN), p-tolyl indium (C 21 h 21 In) etc.; gallium-containing organic precursors include but are not limited to: dimethylgallium fluoride (C 2 h 6 FGa), trimethylgallium (C 3 h 9 Ga), triethylgallium (C 6 h 15 Ga), tripropylgallium (C 9 h 21 Ga), triisopropylga...

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Abstract

The invention discloses a laser-assisted nano-particle preparation method, and an apparatus thereof, and belongs to the nano-material preparation field. The method comprises the following steps: a gaseous precursor is introduced into a plasma generating device and is activated by the plasma generating device, and the obtained activated gaseous precursor enters a reaction chamber; and laser beams emitted by a laser generating device pass are gathered through a lens on the wall of the reaction chamber, the gathered laser beams enter the reaction chamber and heat the activated gaseous precursor in the reaction chamber to crack the activated gaseous precursor in order to obtain active nano-particles, and the active nano-particles are collected by a collector. The nano-particle preparation method and the apparatus have the advantages of substantial reduction of the production cost, simple apparatus and good technological stability; and the prepared nano-particles have the advantages of high purity, good stability, uniform morphological particle size, high quality reliability and high yield.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation, in particular to a method and equipment for laser-assisted preparation of nanoparticle. Background technique [0002] In recent years, the preparation of nanoparticles and their properties have attracted widespread attention (J.H.Chio, T.-H.Kim, J.Seo, Y.Kuk, et al.Appl.Phys.Lett.85(2004) 3235 ). Nanoparticles have the characteristics of small size effect, surface effect, quantum size effect, and macroscopic quantum tunneling effect, and exhibit optical, electrical, thermal, magnetic, and force properties different from traditional materials (W.Lu, W.Wang, Y. Su, J. Li, L. Jiang, Nanotechnology 16 (2005) 2582), so it has important applications in many fields such as chemical industry, materials, electronics, machinery, environmental protection and biomedical engineering. [0003] At present, the methods for preparing nanoparticles mainly include sol-gel method, electrochemical method, ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02B01J19/12
Inventor 李学耕王东
Owner 李学耕
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