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Method for preparing zinc oxide (ZnO) nanorods

A nanorod, zinc oxide technology, applied in the direction of zinc oxide/zinc hydroxide, etc., achieves the effects of not easy to generate, uniform size, and simple preparation method

Inactive Publication Date: 2009-08-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the preparation of zinc oxide nanopowders by using ethylenediamine and ethanolamine as a mixed solvent

Method used

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  • Method for preparing zinc oxide (ZnO) nanorods
  • Method for preparing zinc oxide (ZnO) nanorods
  • Method for preparing zinc oxide (ZnO) nanorods

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Weigh 1.0976g Zn(CH 3 COO) 2 2H 2 O. 1.1222g KOH is put into a beaker, then measure 15ml of deionized water and add it to the beaker, mechanically stir at a speed of 500 rpm for 20 minutes, then measure 30ml of a mixture of ethylenediamine and ethanolamine with a volume ratio of 1:1 The solvent was added into a beaker, and mechanically stirred at 500 rpm for 40 minutes to obtain a clear reaction solution; the above reaction solution was poured into a reaction kettle, put into an oven, heated to 110°C, and reacted for 10 hours. After the reaction was completed, it was naturally cooled to room temperature. The product was obtained by centrifugation at 6000 rpm for 15 minutes; the product was washed with deionized water and absolute ethanol three times respectively, and then dried at 60° C. for 5 hours to obtain ZnO nanorod powder. figure 1 For the X-ray diffraction pattern of the powder synthesized in this example, the comparison standard XRD spectrum shows that the n...

Embodiment 2

[0026] Weigh 1.0976g Zn(CH 3 COO) 2 2H 2 O. 0.8417g KOH is put into the beaker, then measure 30ml of deionized water and add it into the beaker, mechanically stir at 800 rpm for 10 minutes, then measure 20ml of the mixture of ethylenediamine and ethanolamine with a volume ratio of 5:1 The solvent was added into a beaker, and mechanically stirred at 800 rpm for 20 minutes to obtain a clear reaction solution; the above reaction solution was poured into a reaction kettle, placed in an oven, heated to 120°C, and reacted for 8 hours. After the reaction was completed, it was naturally cooled to room temperature. The product was obtained by centrifugation at 8000 rpm for 5 minutes; the product was washed with deionized water for 6 times, washed with absolute ethanol once, and then dried at 40°C for 12 hours to obtain ZnO nanopowder. image 3 The X-ray diffraction pattern of the powder synthesized in this example is compared with the standard XRD pattern, which shows that the nano-...

Embodiment 3

[0028] Weigh 1.0976g Zn(CH 3 COO) 2 2H 2 0. 0.5611gKOH is put into the beaker, then measure 10ml of deionized water and add it to the beaker, mechanically stir at a speed of 700 rpm for 15 minutes, then measure 20ml of a mixed solvent with a volume ratio of 1:5 ethylenediamine and ethanolamine In a beaker, stir mechanically at 700 rpm for 25 minutes to obtain a clear reaction solution; pour the above reaction solution into a reaction kettle, put it in an oven, heat up to 120° C., and react for 6 hours. After the reaction was completed, it was naturally cooled to room temperature. The product was obtained by centrifugation at 7000 rpm for 8 minutes; the product was washed 4 times with deionized water and 2 times with absolute ethanol, and then dried at 50° C. for 10 hours to obtain ZnO nanopowder. Figure 4 The X-ray diffraction pattern of the powder synthesized in this example is compared with the standard XRD pattern, which shows that the nano-powder is ZnO in the hexagona...

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Abstract

The invention relates to a method for preparing zinc oxide (ZnO) nanorods, and the method comprises: (1) soluble zinc salt and hydroxide with the molar ratio of 1:2-1:4 are weighed at room temperature and added in deionized water, then a mixed solvent of ethylenediamine and ethanolamine with the volume ratio of 1:5-5:1 is added, and the mechanical stirring is carried out for 20-40 minutes for obtaining clear reaction solution, wherein, the volume ratio of the added mixed solvent to the deionized water is 1:6-1:1; (2) the reaction solution in step (1) is added in a reaction kettle for carrying out the solvent thermal reaction, the reaction temperature is 110-150 DEG C, the reaction is carried out for 6-12h, and the natural cooling is carried out to the room temperature; (3) products are centrifugally separated, washed and dried at 40-60 DEG C for 5-12h, thereby obtaining the ZnO nanorods. The preparation method is simple and easy to control, and the prepared zinc oxide nanorods have even size; in addition, nano-particles are more stable in the organic phase and difficult to generate the impurity phase.

Description

technical field [0001] The invention belongs to the field of preparation of nanorods, in particular to a preparation method of zinc oxide (ZnO) nanorods. Background technique [0002] Zinc oxide is a wide bandgap direct bandgap semiconductor with a wurtzite crystal structure of the II-VI group. The bandgap at room temperature is 3.37ev, and the exciton binding energy is as high as 60mev. It shows near-UV emission, transparent piezoelectricity, Photocatalytic and piezoelectric properties. With the development of nanotechnology, due to its quantum confinement effect, small size effect, surface effect, etc., nano-zinc oxide has special properties and new uses that cannot be compared with general zinc oxide powder in terms of light, electricity, magnetism, and sensitivity. to attract more and more attention. At present, the preparation methods of zinc oxide nanopowder include solvothermal method, precipitation method, sol-gel method and so on. The control of particle size and...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 李耀刚刘志福王宏志张青红
Owner DONGHUA UNIV
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