Preparation methods and uses of doped VIB group metal oxide nanoparticles or dispersions thereof

Patent metadata

Field	Value
Publication number	US-10120106-B2
Application number	US-201414910476-A
Country	US
Kind code	B2
Filing date	Aug 5, 2014
Priority date	Aug 5, 2013
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

The present invention is related to a method for preparing VIB Group metal oxide particles or dispersions, wherein the VIB Group metal is tungsten or molybdenum. The methods include: 1) providing precursors of VIB Group metal oxide, reductants and supercritical fluids. 2) said VIB Group metal oxide particles, or dispersions are obtained by the reaction between said metal oxide precursors, and reductants are under supercritical state in said supercritical fluids. Especially, said VIB Group metal oxide can be tungsten bronze, molybdenum bronze, or tungsten and molybdenum bronze which can be present by the formula A x B y MO z . Wherein, A represents element exists in the form of dopant cation; and B represents element exists in the form of dopant anion; O represents oxygen; 0≤x≤1, 0≤y≤1, 0<x+y≤1, and 2≤z≤3. The said VIB Group metal oxide particles and dispersions can be applied to the glasses of houses, buildings, automobiles, ships etc, with high transparency and NIR and UV lights shielding properties, by which the control of sunlight and heat radiation can be achieved.

First claim

What is claimed is:

1. A method for preparing VIB Group metal oxide particles or a dispersion thereof, the method comprising:
1) reacting a salt solution of the VIB Group metal with a precipitating agent solution to produce colloid particles of an acid of the VIB Group metal;
2) removing impurities from the colloid particles to obtain purified colloid particles; and
3) reacting the purified colloid particles with a reductant in a supercritical fluid under a supercritical state…

Assignees

• Univ Beijing Chem Tech
• Changzhou Institute Of Advanced Material Of Beijing Univ Of Chemical Technology

Inventors

• Shen Zhigang
• Yun Jimmy Sung Lai
• Chen Jianfeng
• Zeng Xiaofei

Classifications

• C01P2002/72

  Chemistry & Metallurgy · mapped topic

• C01P2006/12

  Chemistry & Metallurgy · mapped topic

• C09D5/32

  Chemistry & Metallurgy · mapped topic

• C01P2004/61

  Chemistry & Metallurgy · mapped topic

• C01P2004/64

  Chemistry & Metallurgy · mapped topic