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Method for preparing nanometer TeO2 from aerosol through microwave assistance

A microwave-assisted, aerosol technology, applied in nanotechnology, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of not exploring the role of microwaves, and achieve the effects of easy amplification, short production cycle, and non-destructive effects

Inactive Publication Date: 2018-04-20
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In 2014, Jiang Xingmao et al. used the aerosol method to prepare single-crystal nanoparticles, and introduced the aerosol method to prepare nano-metal particles, but did not explore the role of microwaves. At the same time, this invention was limited to metal single crystals, and did not involve the preparation of non-metallic nanoparticles.
In 2014, Jiang Xingmao et al. used microwave-assisted aerosol to prepare hollow spheres. This invention is also limited to metal nanoparticles, and the nanoparticles are hollow structures, not involving non-metallic nanopowders.

Method used

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  • Method for preparing nanometer TeO2 from aerosol through microwave assistance
  • Method for preparing nanometer TeO2 from aerosol through microwave assistance
  • Method for preparing nanometer TeO2 from aerosol through microwave assistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthetic raw materials: H 2 TeO 4 and water

[0032] (1) Weigh 1g H 2 TeO 4 In a 100mL beaker, ultrasonically stir for 10min until the drug in the beaker dissolves.

[0033] (2) Put the solution obtained in (1) into the aerosol generator, open the nitrogen cylinder, adjust the spray pressure of the aerosol generator to 200KPa, and make aerosol droplets through atomization.

[0034] (3) The aerosol droplets generated in (2) are introduced into the microwave generator (the power is 0), and then enter the tube furnace (the temperature is set to 600°C) to dry for 0.5s, and the dried particles are collected on the filter . The collected particles are TeO 2 Nano powder particles.

[0035] figure 1 TeO prepared for example 1 2 XRD patterns of nanoparticles; by figure 1 It can be seen that the nanopowder particles are TeO 2 Crystal, compared with the PDF card of TeO2, it can be found that it is consistent with the characteristic peak of card 42-1365.

[0036] fig...

Embodiment 2

[0038] Synthetic raw material: TeCl 4 and water

[0039] (1) Weigh 2g TeCl 4 In a 100mL beaker, ultrasonically stir for 10min until the drug in the beaker dissolves.

[0040] (2) Put the solution described in (1) into the aerosol generator, open the nitrogen cylinder, adjust the spray pressure of the aerosol generator to 200KPa, and make aerosol droplets through atomization.

[0041] (3) The aerosol droplets generated in (2) were introduced into a microwave generator (power 800KW), and then dried in a tube furnace (temperature set at 700°C) for 1 second, and the dried particles were collected on a filter. The collected particles are TeO2 Nano powder particles.

[0042] image 3 TeO prepared for Example 2 2 XRD patterns of nanoparticles; by image 3 It can be seen that the nanopowder particles are TeO 2 crystals. by TeO 2 The PDF card comparison found that it is consistent with the characteristic peak of the 8-484 card.

[0043] Figure 4 TeO prepared for Example 2 ...

Embodiment 3

[0045] Synthetic raw materials: H 2 TeO 4 and water

[0046] (1) Weigh 5g H 2 TeO 4 In a 100mL beaker, ultrasonically stir for 10min until the drug in the beaker dissolves.

[0047] (2) Put the solution described in (1) into the aerosol generator, open the nitrogen cylinder, adjust the spray pressure of the aerosol generator to 300KPa, and make aerosol droplets through atomization.

[0048] (3) The aerosol droplets generated in (2) were introduced into a microwave generator (power 800KW), and then dried in a tube furnace (temperature set at 900°C) for 1 second, and the dried particles were collected on a filter. The collected particles are TeO 2 Nano powder particles.

[0049] Figure 5 TeO prepared for Example 3 2 XRD patterns of nanoparticles; by Figure 5 It can be seen that the nanopowder particles are TeO 2 crystals. by TeO 2 A PDF card comparison of the 8-484 can be found, which matches the Trump card of 8-484. pass figure 1 , image 3 , Figure 5 It can ...

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Abstract

The invention discloses a method for preparing nanometer TeO2 from aerosol through microwave assistance. The method comprises the following steps of A, dispersing precursors into a polar solvent to form a colloidal solution or true solution, i.e., a precursor solution, wherein the mass ratio of the precursors to the polar solvent is (0.01 to 10):(90 to 99.9); B, atomizing the precursor solution prepared in the step A to form aerosol liquid drips; C, dripping the aerosol liquid prepared in the step B into a microwave generator to perform microwave radiation; then, performing drying roasting toform nanometer powder particles. The preparation method of the spherical powder has the advantages that the production period is short; the operation is simple and convenient; no pollution is caused;the microcosmic structures of the obtained spherical powder cannot be easily damaged; the amplification can be easily realized; the method is suitable for being popularized and applied. A product canbe widely used in the fields of corrosion resistance, bacterium resistance, electronic component materials, emission spectrum analysis and the like.

Description

technical field [0001] The present invention relates to TeO 2 The technical field of powder particle preparation, especially relates to a microwave-assisted aerosol preparation of nano-TeO 2 Methods. Background technique [0002] Inorganic micro / nanomaterials have attracted more and more attention due to their unique physical and chemical properties, especially in materials science and other aspects, which have very broad application prospects. Inorganic Micro / Nano Spherical TeO 2 The material has the characteristics of light weight, high strength and high specific surface area, and it has a wide range of applications in many emerging fields. For example: used as an acousto-optic deflection element; used for antisepsis, identification of bacteria in vaccines, etc.; preparation of II-VI compound semiconductors, thermal and electrical conversion elements, cooling elements, piezoelectric crystals and infrared detectors, etc.; used as preservatives And the bacterial test in ...

Claims

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Application Information

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IPC IPC(8): C01B19/00B82Y40/00
CPCC01B19/004B82Y40/00C01P2002/72C01P2004/03C01P2004/62C01P2004/64
Inventor 姜兴茂童彦杰吕中刘向宇聂震朱爽
Owner WUHAN INSTITUTE OF TECHNOLOGY
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