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Preparation of zn by molten salt template method 1‑x mg x o Nanorod approach

A technology of zn1-xmgxo and nanorods, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., to achieve the effects of strong operability, high c-axis orientation, and easy process

Active Publication Date: 2017-05-03
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention does not have a Zn that can easily prepare high c-axis orientation and perfect crystallization at present. 1-x Mg x The problem of the preparation method of O nanorods provides a method for preparing Zn by molten salt template method 1-x Mg x O nanorod approach

Method used

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  • Preparation of zn by molten salt template method <sub>1‑x</sub> mg <sub>x</sub> o Nanorod approach
  • Preparation of zn by molten salt template method <sub>1‑x</sub> mg <sub>x</sub> o Nanorod approach
  • Preparation of zn by molten salt template method <sub>1‑x</sub> mg <sub>x</sub> o Nanorod approach

Examples

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Effect test

no. 1 example

[0051] First, prepare 81g of ZnO nanorods, 0.5L of 2mol / L Mg(NO 3 ) 2 solution and oxalic acid, 81g of ZnO nanorods were added to 0.5L of 2mol / L Mg(NO 3 ) 2 solution, at the same time, oxalic acid is also added to the Mg(NO 3 ) 2 solution to obtain a mixed solution; here, oxalic acid may be in excess, so that by adding oxalic acid, Mg 2+ Complete reaction produces magnesium oxalate, at this moment, the pH value of mixed solution is 1. At this time, ZnO nanorods and Mg(NO 3 ) 2 Mg in solution 2+ The molar ratio is 1; in order to avoid precipitation of magnesium oxalate, here, ultrasonic dispersion is carried out on the mixed solution, and stirred.

[0052] Then, slowly inject 10wt% ammonia water into the mixed solution through a syringe to adjust the pH value to 7, thereby obtaining a precipitate; here, the addition rate of ammonia water is 0.1mL / s; then, dry the precipitate to Obtain the precursor; the precipitation is dried in an oven at 80°C for 24 hours;

[0053] ...

no. 2 example

[0055] First, prepare 121.5g of ZnO nanorods, 0.5L of 2mol / L Mg(NO 3 ) 2 solution and oxalic acid, 121.5g of ZnO nanorods were added to 0.5L of 2mol / L Mg(NO 3 ) 2 solution, at the same time, oxalic acid is also added to the Mg(NO 3 ) 2 solution to obtain a mixed solution; here, oxalic acid may be in excess, so that by adding oxalic acid, Mg 2+ Complete reaction produces magnesium oxalate, at this moment, the pH value of mixed solution is 6. At this time, ZnO nanorods and Mg(NO 3 ) 2 Mg in solution 2+ The molar ratio is 1.5; in order to avoid precipitation of magnesium oxalate, here, ultrasonic dispersion is carried out on the mixed solution, and stirred.

[0056] Then, slowly inject 10wt% ammonia water into the mixed solution through a syringe to adjust the pH value to 7, thereby obtaining a precipitate; here, the addition rate of ammonia water is 0.08mL / s; then, the precipitate is dried to obtain Obtain the precursor; the precipitation is dried in an oven at 80°C for...

no. 3 example

[0059] First, prepare 186.3g of ZnO nanorods, 0.5L of 2mol / L Mg(NO 3 ) 2 solution and oxalic acid, 186.3g of ZnO nanorods were added to 0.5L of 2mol / L Mg(NO 3 ) 2 solution, at the same time, oxalic acid is also added to the Mg(NO 3 ) 2 solution to obtain a mixed solution; here, oxalic acid may be in excess, so that by adding oxalic acid, Mg 2+ Complete reaction produces magnesium oxalate, at this moment, the pH value of mixed solution is 5. At this time, ZnO nanorods and Mg(NO 3 ) 2 Mg in solution 2+ The molar ratio of the mixture is 2.3; in order to avoid precipitation of magnesium oxalate, here, the mixed solution is ultrasonically dispersed and stirred.

[0060] Then, slowly inject 10wt% ammonia water into the mixed solution through a syringe to adjust the pH value to 8, thereby obtaining a precipitate; here, the addition rate of ammonia water is 0.1mL / s; then, dry the precipitate to Obtain the precursor; the precipitation is dried in an oven at 80°C for 24 hours; ...

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Abstract

The invention provides a molten-salt template method for preparation of a Zn<1-x>Mg<x>O nanorod. The method comprises the following steps: S1, adding a ZnO nanorod and oxalic acid into a Mg<2+> solution so as to obtain a mixed solution with a pH value of less than 6, then adding ammonia water into the mixed solution so as to obtain a precipitate and drying the precipitate so as to obtain a precursor; and S2, mixing the precursor with molten salt, heating the mixture at a heating temperature higher than the melting temperature of the molten salt and then carrying out cooling and washing so as to obtain the Zn<1-x>Mg<x>O nanorod. The method provided by the invention is easy to control and has good operationality.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a method for preparing Zn by molten salt template method 1-x Mg x O nanorod approach. Background technique [0002] Zinc oxide (ZnO)-based material is a direct band gap material, which is basically transparent in the visible region, but has strong absorption in the ultraviolet spectral region, which is of great significance for the manufacture of ultraviolet photodetectors with high signal-to-noise ratio. Mg 2+ Doping ZnO can adjust its energy band, and the material is non-toxic and rich in resources; in addition, due to the simple preparation of ZnO and the matching substrate, the preparation of high-efficiency and high-performance Zn 1-x Mg x O ultraviolet optoelectronic devices become possible. [0003] Zn 1-x Mg x O has the good chemical performance stability of ZnO and MgO at the same time, and its performance depends on the basic properties of ZnO and MgO, the zinc ion r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/00B82Y30/00
Inventor 戴英裴新美马丽龙陈文
Owner WUHAN UNIV OF TECH
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