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A microwave-ultrasonic method for preparing h-moo3 nanorods

A technology of h-moo3 and nanorods, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of side reactions, high reaction temperature, long reaction time, etc. The effect of short cycle, high purity and uniform distribution

Active Publication Date: 2015-08-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Synthesis of h-MoO due to hydrothermal method 3 Nanocrystals have disadvantages such as relatively high reaction temperature and long reaction time, while sonochemical synthesis of h-MoO 3 Nanocrystals have the disadvantages that the reaction is not easy to control and side reactions occur, so we are looking for a low-temperature, easy-to-control, and rapid synthesis of h-MoO 3 The nanocrystal approach has important implications

Method used

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  • A microwave-ultrasonic method for preparing h-moo3 nanorods
  • A microwave-ultrasonic method for preparing h-moo3 nanorods

Examples

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Effect test

Embodiment 1

[0018] 1) Analytical pure ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) join in deionized water and stir to make the concentration of ammonium molybdate is the solution A of 0.001mol / L;

[0019] 2) After stirring and dissolving solution A evenly, use 4mol / L HNO 3 The solution adjusts the pH of solution A to 2.0 to obtain solution B;

[0020] 3) Pour solution B into a four-necked round-bottomed flask, put the equipped four-necked round-bottomed flask into a UWave-1000 microwave-ultraviolet-ultrasonic trinity synthesis extraction reaction apparatus, and fix it, and use platinum resistance to measure temperature ;

[0021] 4) Use the microwave-ultrasonic synthesis mode, set the output power of the ultrasonic wave to 400W, select the temperature-time working mode, set the reaction temperature to 60°C, the time to 100min, the microwave heating time to 10min, and the output power of the microwave during the heat preservation process to 24W. Run the program, and naturally co...

Embodiment 2

[0024] 1) Analytical pure ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) join in deionized water and stir to make the concentration of ammonium molybdate is the solution A of 0.01mol / L;

[0025] 2) After stirring and dissolving solution A evenly, use 5mol / L HNO 3 The solution adjusts the pH of solution A to 1.0 to obtain solution B;

[0026] 3) Pour solution B into a four-necked round-bottomed flask, put the equipped four-necked round-bottomed flask into a UWave-1000 microwave-ultraviolet-ultrasonic trinity synthesis extraction reaction apparatus, and fix it, and use platinum resistance to measure temperature ;

[0027] 4) Use the microwave-ultrasonic synthesis mode, set the output power of the ultrasonic wave to 400W, select the temperature-time working mode, set the reaction temperature to 70°C, the time to 80min, the microwave heating time to 10min, and the output power of the microwave during the heat preservation process to 24W. Run the program, and naturally cool...

Embodiment 3

[0030] 1) Analytical pure ammonium molybdate ((NH 4 ) 6 Mo7 o 24 4H 2 O) join in deionized water and stir to make the concentration of ammonium molybdate is the solution A of 0.005mol / L;

[0031] 2) After stirring and dissolving solution A evenly, use 6mol / L HNO 3 The solution adjusts the pH=0.5 of solution A to obtain solution B;

[0032] 3) Pour solution B into a four-necked round-bottomed flask, put the equipped four-necked round-bottomed flask into a UWave-1000 microwave-ultraviolet-ultrasonic trinity synthesis extraction reaction apparatus, and fix it, and use platinum resistance to measure temperature ;

[0033] 4) Use the microwave-ultrasonic synthesis mode, set the output power of the ultrasonic wave to 400W, select the temperature-time working mode, set the reaction temperature to 50°C, the time to 60min, the microwave heating time to 10min, and the output power of the microwave during the heat preservation process to 24W. Run the program, and naturally cool to ...

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Abstract

The invention relates to a method for preparing h-MoO3 nanorods by a microwave-ultrasonic process, which comprises the following steps: adding ammonium molybdate into deionized water to obtain a solution A, and regulating the pH value of the solution A to 0.5-2.0 to obtain a solution B; pouring the solution B into a four-neck round-bottom flask, putting in a microwave-ultraviolet-ultrasonic integrated synthesis extraction reactor, carrying out microwave-ultrasonic synthesis, and after the reaction finishes, naturally cooling to room temperature; and opening the reactor, taking out the product, washing, and drying in an electric heating vacuum drying oven to obtain the h-MoO3 nanorods. The invention widens the synthesis technique range of the h-MoO3 nanocrystals; the technique for preparing the h-MoO3 nanocrystals has the advantages of simpleness, low cost, short reaction period and higher yield; the h-MoO3 nanorods prepared by the method provided by the invention have the advantages of higher purity, complete development, favorable crystallinity and uniform distribution; and the method can implement large-scale synthesis of the h-MoO3 nanorods.

Description

technical field [0001] The present invention relates to a kind of preparation MoO 3 Nanorod method, especially related to a microwave-ultrasonic preparation of h-MoO 3 nanorod approach. Background technique [0002] MoO 3 As an important functional inorganic material, it is the core material of electrochromic, photochromic, gasochromic, gas sensing, intelligent camouflage and other devices. Industry, military and other fields have great application prospects. MoO 3 There are three common crystal structures: thermodynamically stable orthorhombic α-MoO 3 , monoclinic β-MoO with a thermodynamically metastable structure 3 and hexagonal h-MoO 3 . Hexagonal h-MoO 3 Nanocrystals have attracted more and more attention from researchers because of their newer and more superior physical and chemical activities. Looking for h-MoO 3 Simple, effective and rapid synthesis of nanocrystals, exploring h-MoO 3 The theory and application of nanocrystals in optics, electricity and ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G39/02B82Y30/00B82Y40/00
Inventor 曹丽云马凤兰黄剑锋吴建鹏费杰卢靖李翠艳
Owner SHAANXI UNIV OF SCI & TECH
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