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Process for synthesizing nano band of MoO3 monocrystal

A single-crystal nanometer and molybdenum trioxide technology, which is applied in the direction of molybdenum oxide/molybdenum hydroxide, etc., can solve problems such as limiting the application of molybdenum trioxide, and achieve the effects of easy control, high yield and simple process

Inactive Publication Date: 2002-12-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the above-mentioned related research at home and abroad is the preparation of molybdenum trioxide powder and film, which limits the development of molybdenum trioxide (MoO 3 ) in the field of nano
So far, the synthesis of molybdenum trioxide single crystal nanobelts has not been reported

Method used

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  • Process for synthesizing nano band of MoO3 monocrystal
  • Process for synthesizing nano band of MoO3 monocrystal
  • Process for synthesizing nano band of MoO3 monocrystal

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Weigh 20mmol of analytically pure sodium molybdate, dissolve it in 10ml of deionized water to obtain a 2mol / l clear solution, add 16ml of 4mol / l perchloric acid solution at a rate of 0.5mL / min, stir to keep the solution clear, and place the solution in a 40ml In the reaction kettle, add deionized water, strictly control the solution H + Concentration ([H + ]=1 mol / l). Seal the reactor and react at 100°C for 24h. Then cool to room temperature, open the reaction kettle, filter with a Buchner funnel, wash with deionized water, and obtain a white slightly light green powder. The product is identified as orthorhombic molybdenum trioxide by X-ray powder diffraction; the morphology of the product detected by TEM electron microscope: the diameter is 50-400 nanometers, and the length is 2-15 microns. Electron diffraction of a single nanoribbon proves that the product is a single crystal.

Embodiment 2

[0020] Weigh 10mmol analytically pure potassium molybdate, dissolve it in 10ml deionized water to obtain a 1mol / l clear solution, add 20ml solution of 2mol / l perchloric acid at a rate of 2mL / min per drop, stir to keep the solution clear, and place the solution in 40ml In the reactor, add deionized water, strictly control the solution H + Concentration ([H + ]=0.5mol / l). Seal the reactor and react at 100°C for 24h. Then cool to room temperature, open the reaction kettle, filter with a Buchner funnel, wash with deionized water, and obtain a white slightly light green powder. The product is identified as orthorhombic molybdenum trioxide by X-ray powder diffraction; the morphology of the product detected by TEM electron microscope: the diameter is 100-500 nanometers, and the length is 2-15 microns. Electron diffraction of a single nanoribbon proves that the product is a single crystal.

Embodiment 3

[0022] Weigh 20mmol of analytically pure sodium molybdate, dissolve it in 10ml of deionized water to obtain a 2mol / l clear solution, and dissolve it at a speed of 1mL / min.

[0023] Weigh 20mmol of analytically pure sodium molybdate, dissolve it in 10ml of deionized water to obtain a 2mol / l clear solution, add 16ml of 4mol / l perchloric acid solution at a rate of 1mL / min, stir to keep the solution clear, and place the solution in a 40ml reaction In the kettle, add deionized water, strictly control the solution H + Concentration ([H + ]=1 mol / l). Seal the reactor and react at 140°C for 18h. Then cool to room temperature, open the reaction kettle, filter with a Buchner funnel, wash with deionized water, and obtain a white slightly light green powder. The product is identified as orthorhombic molybdenum trioxide by X-ray powder diffraction; the morphology of the product detected by TEM electron microscope: the diameter is 100-500 nanometers, and the length is 2-15 microns. Elec...

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Abstract

A process for synthesizing nanoband of MoO3 monocrystal includes dissolving soluble molybdate and perchloric acid in water, and hydrothermal reaction at 100-200 deg.C while controlling the concentration of H ions (10mol / L[H]>0.01mol / L) and the speed of dropping acid (10mL / min>V7 0.1mL / m). Its advantages are unique ize and shape of product, and high output rate.

Description

technical field [0001] The invention relates to a preparation method of a low-dimensional nanometer material, in particular to a controlled synthesis method of a functional transition metal oxide single crystal nanobelt. Background technique [0002] At present, the methods for synthesizing molybdenum trioxide in the prior art are mostly limited to the preparation of materials such as powder, block, and film. [0003] Bailar, Emeleus et al reported molybdenum trioxide (MoO 3 )Synthesis. In "South African Journal of Chemistry", volume 34, page 118, it is reported that sodium molybdate solution is acidified with perchloric acid, and MoO is obtained by long-term static crystallization. 3 Methods. In addition, the preparation of powder can also use sol-gel method. The particle size of the powder is not uniform, the anisotropy is not good, and the application in many fields such as the limited transmission of physical properties, nano-devices, and sensor preparation is greatl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/02
Inventor 李亚栋李晓林
Owner TSINGHUA UNIV
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