Title: Continuous flow synthesis of VO2 nanoparticles or nanorods by using a microreactor

Abstract

The invention provides a method for producing composite nanoparticles, the method using a first compound capable of transitioning from a monoclinic to a tetragonal rutile crystal state upon heating, and having the steps of subjecting the first compound to a hydrothermal synthesis to create anisotropic crystals of the compound; encapsulating the first compound with a second compound to create a core-shell construct; and annealing the construct as needed. Also provided is a device for continuously synthesizing composite nanoparticles, the device having a first precursor supply and a second precursor supply; a mixer to homogeneously combine the first precursor and second precursor to create a liquor; a first microreactor to subject the liquor to hydrothermic conditions to create an\isotropic particles in a continuous operation mode; and a second microreactor for coating the particles with a third precursor to create a core-shell construct.

Inventors:

Li, Jie; Sun, Yugang; Muehleisen, Ralph T.; Guzowski, Leah B.; Yan, Xiaojie; Dull, Samuel; Castano, Ioannina

Issue Date:

2018-05-22

Research Org.:

Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1452900

Patent Number(s):

9975804

Application Number:

15/487,276

Assignee:

UCHICAGO ARGONNE, LLC (Chicago, IL)

Patent Classifications (CPCs):

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

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

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

C01G31/02 - Oxides

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

C01P2002/50 - Solid solutions
C01P2002/52 - containing elements as dopants
C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram
C01P2004/16 - Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer
C01P2004/32 - Spheres
C01P2004/54 - Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
C01P2004/62 - Submicrometer sized, i.e. from 0.1-1 micrometer
C01P2004/64 - Nanometer sized, i.e. from 1-100 nanometer
C01P2004/84 - one phase coated with the other

C - CHEMISTRY C03 - GLASS C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES

C03B19/106 - {by chemical vapour deposition
C03B25/02 - in a discontinuous way
C03B37/014 - made entirely or partially by chemical means {, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
C03B37/0753 - {consisting of different sorts of glass, e.g. bi-component fibres}

C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS

C03C1/02 - Pretreated ingredients
C03C1/10 - to produce uniformly-coloured transparent products
C03C17/007 - {containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase}
C03C2204/00 - Glasses, glazes or enamels with special properties
C03C2217/452 - Glass
C03C2217/475 - Inorganic materials
C03C2217/485 - Pigments
C03C3/04 - containing silica
C03C4/02 - for coloured glass

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DOE Contract Number:  

AC02-06CH11357

Resource Type:

Patent

Resource Relation:

Patent File Date: 2017 Apr 13

Country of Publication:

United States

Language:

English

Subject:

42 ENGINEERING; 36 MATERIALS SCIENCE