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Process of preparing magnesium boron oxygen nano thread

A nanowire and boron-oxygen technology, which is applied in the field of preparation of magnesium boron-oxygen nanowires, can solve the problems of many impurities, difficult to remove, complex equipment, etc., and achieve the effect of simple process, improved mechanical properties and excellent performance

Inactive Publication Date: 2005-01-05
ZHEJIANG UNIV
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Problems solved by technology

But these methods have many shortcomings, such as the amount produced by the thermal evaporation method is less, and requires complicated equipment, and the impurity produced by the catalyst method is more, which is not easy to remove.

Method used

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  • Process of preparing magnesium boron oxygen nano thread
  • Process of preparing magnesium boron oxygen nano thread
  • Process of preparing magnesium boron oxygen nano thread

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Embodiment 1

[0015] Magnesium nitrate (Mg(NO 3 ) 2 Analytical purity 99%), boric acid (H 3 BO 3 Analytical purity 99%) and citric acid (C 6 h 8 o 7 ·H 2 (analytical purity 99%)) by molar ratio of magnesium nitrate: boric acid: citric acid = 1: 2: 5 solution, dried at 150 ° C to make a gel, then roasted at 750 ° C for 4 hours to generate white powder The white powder obtained above was dissolved in water, and the soluble B was removed by centrifugation. 2 o 3 Impurities, to get MgB 4 o 7 nanowires.

[0016] will dissolve B 2 o 3 MgB 4 o 7 Nanofilaments were detected by XRD (see figure 1 ), the experiments showed that the crystallization of nanowires will be better with the prolongation of calcination time. Using a scanning electron microscope (see figure 2 ) and transmission electron microscopy (see image 3 ). The results show that the magnesium boron oxygen nanowires produced by the sol-gel method are relatively uniform in diameter, about 500nm, and the length is in th...

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Abstract

The invention discloses a method to prepare a magnesium boron oxygen nano thread, adopting a sol-gel method, and the steps as follows: 1) prepare a solution by using 99% analytical magnesium nitrate, boric acid and citric acid in mole ratio of 1 to 1 to 1 - 1 to 10 to 10, drying at 10-500 deg.C so as to obtain a gelatinous product; 2) baking the product at 100 deg.C-1300 deg.C for 5 minutes-200 hours, and generating a white powdery substance; 3) dissolving the white powdery substance in water, centrifuging and eliminating soluble B2O3, and making the magnesium boron oxygen (MgB4O7) nano thread. It has simple process, easy to form volume-production, and the made nano thread has excellent performance. By organically combining the nano thread with other material blocks, it is hopeful to improve the mechanical property of ceramic material, and enhance the flexibility and strength of ceramic material.

Description

technical field [0001] The invention relates to a preparation method of magnesium boron oxygen nano wire. Background technique [0002] Due to the unique mechanical, electrical, optical, magnetic and other properties of one-dimensional nanomaterials, there is a wide range of industrial application prospects, and it has become a hot spot in recent materials research. One-dimensional nanowires have attracted great attention due to their many unique mechanical properties. Compared with bulk materials, whiskers have greatly enhanced mechanical properties due to fewer defects per unit length. Compared with whiskers, the mechanical properties of one-dimensional nanomaterials are also greatly improved. The mechanical properties of the whiskers of SiC, a commonly used sewing material, are far from the theoretical value. [0003] Magnesium boron oxide (MgB 4 o 7 ) is a better ceramic material, or a thermal fluorescent material. It has considerable a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/624
Inventor 杨德仁杨青王俊沙健
Owner ZHEJIANG UNIV
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