Title: Aerosol fabrication methods for monodisperse nanoparticles

Abstract

Exemplary embodiments provide materials and methods for forming monodisperse particles. In one embodiment, the monodisperse particles can be formed by first spraying a nanoparticle-containing dispersion into aerosol droplets and then heating the aerosol droplets in the presence of a shell precursor to form core-shell particles. By removing either the shell layer or the nanoparticle core of the core-shell particles, monodisperse nanoparticles can be formed.

Inventors:

Jiang, Xingmao; Brinker, C Jeffrey

Issue Date:

2014-10-21

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1160278

Patent Number(s):

8864045

Application Number:

13/300,069

Assignee:

STC.UNM (Albuquerque, NM)

Patent Classifications (CPCs):

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

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C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2004/34 - hollow

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

B22F1/02 - comprising coating of the powder {

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/127 - {Preformed particles}
C23C18/1241 - {Metallic substrates}

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

B22F9/06 - starting from liquid material

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B13/34 - by oxidation or hydrolysis of sprayed or atomised solutions
C01B21/06 - Binary compounds of nitrogen with metals, with silicon, or with boron, {or with carbon, i.e. nitrides

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2004/64 - Nanometer sized, i.e. from 1-100 nanometer

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

C22C2202/02 - Magnetic

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2004/32 - Spheres

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/1295 - {with after-treatment of the deposited inorganic material}
C23C18/08 - characterised by the deposition of metallic material
C23C18/1204 - {inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds}
C23C18/1245 - {Inorganic substrates other than metallic}

B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05B - SPRAYING APPARATUS

B05B1/24 - incorporating means for heating the liquid or other fluent material, e.g. electrically

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

B22F2001/0092 - {Making a dispersion}
B22F1/0018 - {Nanometer sized particles}

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DOE Contract Number:  

AC04-94AL85000

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Nov 18

Country of Publication:

United States

Language:

English

Subject:

77 NANOSCIENCE AND NANOTECHNOLOGY