Title: Reactor and method for production of nanostructures

Abstract

A reactor and method for production of nanostructures, including metal oxide nanowires or nanoparticles, are provided. The reactor includes a regulated metal powder delivery system in communication with a dielectric tube; a plasma-forming gas inlet, whereby a plasma-forming gas is delivered substantially longitudinally into the dielectric tube; a sheath gas inlet, whereby a sheath gas is delivered into the dielectric tube; and a microwave energy generator coupled to the dielectric tube, whereby microwave energy is delivered into a plasma-forming gas. The method for producing nanostructures includes providing a reactor to form nanostructures and collecting the formed nanostructures, optionally from a filter located downstream of the dielectric tube.

Inventors:

Sunkara, Mahendra Kumar; Kim, Jeong H.; Kumar, Vivekanand

Issue Date:

Tue Apr 25 00:00:00 EDT 2017

Research Org.:

University of Louisville Research Foundation, Inc. Louisville, KY (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1353086

Patent Number(s):

9630162

Application Number:

13/439,592

Assignee:

University of Louisville Research Foundation, Inc.

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J12/02 - for obtaining at least one reaction product which, at normal temperature, is in the solid state

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

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

C01B13/14 - Methods for preparing oxides or hydroxides in general
C01B13/32 - by oxidation or hydrolysis of elements or compounds in the liquid or solid state {or in non-aqueous solution, e.g. sol-gel process}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS

C01F7/424 - {using a plasma}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G1/02 - Oxides
C01G19/02 - Oxides
C01G23/047 - Titanium dioxide
C01G23/07 - Producing by vapour phase processes, e.g. halide oxidation
C01G25/02 - Oxides
C01G9/00 - Compounds of zinc
C01G9/02 - Oxides
C01G9/03 - Processes of production using dry methods, e.g. vapour phase processes

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

C01P2002/82 - by IR- or Raman-data
C01P2004/03 - obtained by SEM
C01P2004/16 - Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer
C01P2004/17 - Nanostrips, nanoribbons or nanobelts, i.e. solid nanofibres with two significantly differing dimensions between 1-100 nanometer
C01P2004/64 - Nanometer sized, i.e. from 1-100 nanometer

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01J37/32192 - {Microwave generated discharge
H01J37/3244 - {Gas supply means}
H01J37/32449 - {Gas control, e.g. control of the gas flow}
H01J37/32834 - {Exhausting}

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE

H05H1/46 - using applied electromagnetic fields, e.g. high frequency or microwave energy

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DOE Contract Number:  

FG02-05ER64071; FG36-05G085013A

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 Apr 04

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY