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A kind of molybdenum oxide nanopowder and its preparation method and application

A technology of nano-powder and molybdenum oxide, which is applied in the field of inorganic nano-materials, can solve the problems of low light adjustment efficiency and inability to freely control the light adjustment range of molybdenum oxide, so as to increase electron concentration, improve light adjustment efficiency, and improve light adjustment efficiency Effect

Active Publication Date: 2020-07-14
江苏先进无机材料研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dimming efficiency of molybdenum oxide near visible light is low, and the light adjustment range of molybdenum oxide cannot be freely controlled.

Method used

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  • A kind of molybdenum oxide nanopowder and its preparation method and application
  • A kind of molybdenum oxide nanopowder and its preparation method and application
  • A kind of molybdenum oxide nanopowder and its preparation method and application

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preparation example Construction

[0050] Figure 4 A schematic flow chart showing a method for preparing molybdenum oxide nanopowder according to an embodiment of the present invention. see Figure 4 , the method may include the following steps:

[0051] Step S510: adding a molybdenum-containing solution to the acid solution to adjust the pH value to the pH threshold value to obtain a precursor solution;

[0052] Step S520: Transfer the precursor solution to a hydrothermal reaction device, and keep it warm at the target temperature for a preset time to obtain a molybdenum oxide dispersion;

[0053] Step S530: post-processing the molybdenum oxide dispersion to obtain molybdenum oxide nanopowder.

[0054] In a specific embodiment, in step S510, the acid solution may include at least one of hydrochloric acid, sulfuric acid, nitric acid, oxalic acid, citric acid, acetic acid and the like. The concentration of the acid solution is not particularly limited, and a concentration commonly used in the art can be use...

Embodiment 1

[0064] Step A) Weigh 7.8g of sodium molybdate, dissolve it in 50ml of water, and stir until completely dissolved. Add 10ml of saturated oxalic acid solution, then slowly add saturated oxalic acid dropwise while stirring until the pH value is 1, and stir for half an hour until the hexavalent molybdenum precursor solution is obtained;

[0065] Step B) Take 50ml of the precursor solution and add it to the reaction kettle, transfer it to a hydrothermal furnace, set the temperature at 120°C, and keep it warm for 30h;

[0066] Step C) After the hydrothermal reaction is over, let it cool naturally, turn on the hydrothermal furnace, and carry out the reaction mother liquor containing the nano-powder of anoxic molybdenum oxide (hereinafter also referred to as "anoxic molybdenum oxide nano-powder") for several times. Wash and filter until the acid substances on the surface of the powder are washed clean, transfer to a drying oven, and dry at 80°C for 8 hours.

[0067] The properties of...

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Abstract

The present invention relates to molybdenum oxide nano powder and a preparation method and application thereof. The molybdenum oxide nano powder comprises MoO3 and MoO3-x, wherein the range of the x is larger than 0 and less than 1. The MoO3-x is an oxygen-deficient molybdenum oxide, wherein the MoO3-x is rich in a large amount of oxygen defects, thereby greatly increasing electron concentration inside materials, improving light-adjusting efficiency and freely controlling the light-adjusting range of the molybdenum oxide.

Description

technical field [0001] The invention belongs to the field of inorganic nanometer materials, and in particular relates to a molybdenum oxide nanometer powder and its preparation method and application. Background technique [0002] According to statistics, my country's building energy consumption has reached 30% of the total social energy consumption. With the continuous development of my country's economy, building energy conservation has become the focus of common attention from all walks of life. In building energy consumption, energy consumption generated by glass accounts for about 50% of building energy consumption. How to reduce energy consumption of windows is of great significance to energy conservation and emission reduction. [0003] At present, low-E glass, thermochromic, photochromic and electrochromic measures are mainly used to reduce energy consumption of windows. Among them, photochromism has the advantages of simple structure and good automatic response to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G39/02B82Y30/00B82Y40/00C03C17/23C09D1/00
CPCC01G39/02C01P2002/01C01P2002/72C01P2002/80C01P2004/16C01P2004/64C03C17/23C09D1/00
Inventor 金平实李宁包山虎纪士东李荣
Owner 江苏先进无机材料研究院
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