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Method for preparing molybdenum trioxide in nanometer structure

A molybdenum trioxide and nanostructure technology, applied in molybdenum oxide/molybdenum hydroxide, nanotechnology and other directions, can solve the problems of difficult products, complex processes, and high equipment requirements, and achieve good crystallization performance, simple process equipment, and low preparation temperature. Effect

Inactive Publication Date: 2012-02-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the processes such as electrochemical deposition and sol-gel method are complex, with many steps, it is difficult to obtain products with good single-phase crystallization properties, and it is easy to cause pollution during the preparation process.
Our common vapor deposition method requires a vacuum environment and other atmospheres as well as a good atmosphere control system, and the temperature is generally obtained at a temperature above 800 ° C. It requires high equipment, and it is difficult to obtain molybdenum trioxide nanostructures in a large area. The yield is low. Limit the application of molybdenum trioxide

Method used

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  • Method for preparing molybdenum trioxide in nanometer structure
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  • Method for preparing molybdenum trioxide in nanometer structure

Examples

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Embodiment 1

[0035] A method for preparing nanostructured molybdenum trioxide on a silicon substrate, the specific steps are as follows:

[0036] 1. Use a silicon substrate as the substrate, polish it with sandpaper to remove the pollutants and oxide layer on the surface, then ultrasonically clean it in acetone, absolute ethanol and deionized water for 15 minutes, and dry it;

[0037] 2. Grind the molybdenum sheet with sandpaper to remove the pollutants and oxide layer on its surface, then perform ultrasonic cleaning in acetone, absolute ethanol and deionized water for 15 minutes and dry it; place the molybdenum sheet on the heating area of ​​the electric heating plate, Place the silicon substrate 0.5mm directly above it; turn on the heating device of the electric heating plate, and rapidly raise the temperature to 400°C; keep it warm for 12h;

[0038] 3. Turn off the power, slowly cool down the electric heating plate and naturally cool to room temperature, then remove the silicon substrat...

Embodiment 2

[0040] The method for preparing nanostructure molybdenum trioxide on the ITO glass substrate, the concrete steps are as follows:

[0041] 1. Use an ITO glass substrate as the substrate, ultrasonically clean it in acetone, absolute ethanol and deionized water for 15 minutes and dry it;

[0042] 2. Grind the molybdenum sheet with sandpaper to remove the pollutants and oxide layer on its surface, then perform ultrasonic cleaning in acetone, absolute ethanol and deionized water for 15 minutes and dry it; place the molybdenum sheet on the heating area of ​​the electric heating plate, Place an ITO glass substrate 0.5mm directly above it; turn on the electric heating plate heating device, rapidly raise the temperature to 450°C and keep it warm for 24h;

[0043] 3. Turn off the power, slowly cool down the electric heating plate and naturally cool to room temperature, then remove the silicon substrate. At this time, it can be observed that a layer of white transparent substance is form...

Embodiment 3

[0045] The method for preparing nanostructured molybdenum trioxide on a stainless steel substrate, the specific steps are as follows:

[0046] 1. Use a stainless steel sheet as the substrate, ultrasonically clean it in acetone, absolute ethanol and deionized water for 15 minutes and dry it;

[0047] 2. Grind the molybdenum sheet with sandpaper to remove the pollutants and oxide layer on its surface, then perform ultrasonic cleaning in acetone, absolute ethanol and deionized water for 15 minutes and dry it; place the molybdenum sheet on the heating area of ​​the electric heating plate, Place a stainless steel substrate 0.5mm directly above it; turn on the electric heating plate heating device, rapidly raise the temperature to 500°C and keep it warm for 24h;

[0048] 3. Turn off the power, slowly cool down the electric heating plate and naturally cool down to room temperature, then remove the silicon substrate. At this time, it can be observed that a layer of white substance is ...

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Abstract

The invention discloses a method for preparing molybdenum trioxide in a nanometer structure, which comprises the following concrete steps that: (1) a substrate is cleaned and dried; (2) a molybdenum evaporation source is placed in an electric heating plate heating region, the substrate is placed in a position being 0.1 to 5.0m right above the molybdenum evaporation source, an electric heating plate is switched on, the temperature is raised to 200 to 600 DEG C, and the temperature is maintained for 0.1 to 48h; (3) a power supply is switched off, the substrate is cooled to the room temperature along with the electric heating plate, the substrate is taken down, and a layer of white substances, i.e. molybdenum trioxide is deposited on the substrate surface. The method has the advantages that the process equipment is simple, the cost is low, the preparation temperature is low, the method is suitable for the large-area preparation on different substrates, the yield is high, in addition, no catalyst is needed in the preparation process, and the prepared molybdenum trioxide product has good crystallization performance without any impure phase.

Description

technical field [0001] The invention relates to a preparation method of nanomaterials, in particular to a preparation method of molybdenum trioxide with layered orthogonal phase nanostructure. Background technique [0002] One-dimensional nanomaterials, such as nanowires, nanobelts, and nanotubes, have a series of excellent magnetic, optical, electrical, and thermal properties due to their unique structures, and have broad applications in new nanodevices. Among the various electrochromic materials that have been studied, molybdenum trioxide has a flatter absorption spectrum curve in the visible light region, showing a softer neutral color than tungsten trioxide, and has better aesthetic effects. It can also be mixed into the tungsten trioxide film to adjust the spectral absorption curve of the tungsten trioxide film, improve the visual aesthetic characteristics of tungsten trioxide, and make it have a very wide application in intelligent window color-changing glass and so on...

Claims

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Application Information

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IPC IPC(8): C01G39/02B82Y40/00
Inventor 刘仲武钟明龙邱万奇钟喜春余红雅焦东玲曾德长
Owner SOUTH CHINA UNIV OF TECH
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