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

Patent ·
OSTI ID:1452900
; ; ; ; ; ;
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.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
Assignee:
UCHICAGO ARGONNE, LLC (Chicago, IL)
Patent Number(s):
9,975,804
Application Number:
15/487,276
OSTI ID:
1452900
Country of Publication:
United States
Language:
English

References (12)

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Heteroepitaxial TiO2@W-doped VO2 core/shell nanocrystal films: preparation, characterization, and application as bifunctional window coatings journal January 2015
Reactor concepts for atomic layer deposition on agitated particles: A review
  • Longrie, Delphine; Deduytsche, Davy; Detavernier, Christophe
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 32, Issue 1, Article No. 010802 https://doi.org/10.1116/1.4851676
journal January 2014
Direct Nanorod Assembly Using Block Copolymer-Based Supramolecules journal December 2011
Microscale synthesis of quantum dots journal January 2010
Vanadium Dioxide Nanoparticle-based Thermochromic Smart Coating: High Luminous Transmittance, Excellent Solar Regulation Efficiency, and Near Room Temperature Phase Transition journal December 2015
Atomic Layer Deposition: An Overview journal January 2010
Fine crystalline VO2 nanoparticles: synthesis, abnormal phase transition temperatures and excellent optical properties of a derived VO2 nanocomposite foil journal January 2014
Controlled growth of monodisperse silica spheres in the micron size range journal January 1968
Preparation and Characterization of Self-Supporting Thermochromic Films Composed of VO2(M)@SiO2 Nanofibers journal July 2013
Thermochromic undoped and Mg-doped VO2 thin films and nanoparticles: Optical properties and performance limits for energy efficient windows journal February 2014

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Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING