Method for preparing hexagonal pyramid-like zinc oxide by low temperature combustion synthesis method

A low-temperature combustion synthesis, hexagonal pyramid technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problem of easy agglomeration of powder, and achieve the effects of good dispersion, controllable morphology and low cost

Inactive Publication Date: 2013-03-06
舟山市质量技术监督检测院
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention uses zinc nitrate as the zinc source to add reaction auxiliary raw materials and adopts corresponding preparation methods during low-temperature combustion synthesis, so as to realize the regulation and control of the shape of the target product, solve the problem that the powder is easy to agglomerate, and make it Become a well-dispersed hexagonal pyramid structure zinc oxide

Method used

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  • Method for preparing hexagonal pyramid-like zinc oxide by low temperature combustion synthesis method
  • Method for preparing hexagonal pyramid-like zinc oxide by low temperature combustion synthesis method
  • Method for preparing hexagonal pyramid-like zinc oxide by low temperature combustion synthesis method

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Embodiment 1

[0017] Mix 0.1mol of zinc nitrate (29.75g), 0.3mol (23.12g) of ammonium acetate and 0.01mol (0.80g) of ammonium nitrate, add 0.3mol of deionized water to grind into a colloid, and use an ultrasonic processor with a power of 150W and a frequency of 20kHz. Ultrasonic dispersion for 5 minutes; the obtained colloid is put into the muffle furnace for combustion synthesis, the combustion synthesis temperature is 550 0 C, Grind the product synthesized by combustion to disperse; the powder after grinding is 400 0 Annealed for 3 hours under C conditions to obtain attached figure 1 Zinc oxide powder with a six-sided pyramid structure.

Embodiment 2

[0019] Grind 0.1mol (29.75g) zinc nitrate, 0.5mol (38.54g) ammonium acetate and 0.08mol (6.40g) of ammonium nitrate with 0.5mol deionized water to form a colloid, and use an ultrasonic processor with a power of 150W and a frequency of 20kHz to perform ultrasound Disperse for 5 minutes; the obtained colloid is put into the muffle furnace for combustion synthesis, the combustion synthesis temperature is 600 0 C, Grind the product synthesized by combustion to disperse; the powder after grinding is at 550 0 Annealed for 3 hours under C conditions to obtain attached figure 2 Zinc oxide powder with a six-sided pyramid structure.

Embodiment 3

[0021] Grind zinc nitrate 0.1mol (29.75g), ammonium acetate 0.7mol (53.96g) and ammonium nitrate 0.15mol (12.01g), add 0.7mol deionized water to grind into a colloid, use an ultrasonic processor with a power of 150W and a frequency of 20kHz to perform ultrasound Disperse for 5 minutes; the obtained colloid is put into a muffle furnace for combustion synthesis, the combustion synthesis temperature is 650 0 C, Grind the product synthesized by combustion to disperse; the powder after grinding is at 700 0 Annealed for 3 hours under C conditions to obtain attached image 3 Zinc oxide powder with a six-sided pyramid structure.

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Abstract

The invention relates to a method for preparing hexagonal pyramid-like zinc oxide by a low temperature combustion synthesis method and belongs to the field of synthesis of new materials. The method comprises the following steps: on the basis of low temperature combustion synthesis, taking zinc nitrate as a zinc source, and adding ammonium acetate and ammonium nitrate as ancillary reactive materials; mixing the zinc nitrate, the ammonium acetate and the ammonium nitrate according to the mol ratio (1:3 to 7:0.1-1.5); adding deionized water to be grinded into a colloidal substance; the mol ratio between the added deionized water and the ammonium acetate is 1:1; ultrasonically dispersing the colloidal substance for 5 minutes with an ultrasonic processor with power of 150 W and frequency of 20 kHz, and then putting the colloidal substance into a muffle furnace for combustion synthesis at the temperature of 550-650 DEG C; and grinding and annealing the obtained powder for 3 hours at the temperature of 400-700 DEG C, namely, obtaining the hexagonal pyramid-like zinc oxide. The method can achieve the purpose of controllably preparing the hexagonal pyramid-like zinc oxide, is simple, convenient and rapid in process and less in energy consumption and is suitable for large-scale industrial production, and the obtained zinc oxide powder is widely used for various fields such as microelectronic devices, solar batteries, optical devices, etc.

Description

technical field [0001] The invention relates to a low-temperature combustion synthesis preparation method of hexagonal pyramid structure zinc oxide, which belongs to the field of new material synthesis. Background technique [0002] Zinc oxide is an important wide-bandgap semiconductor material, with a bandwidth of up to 3.37eV at room temperature, a large exciton binding energy (60mev), excellent chemical properties, thermal stability, good luminescence and photoelectric conversion, etc. The performance makes it have a wide range of potential applications in many fields. It can be used in luminescent materials, photoelectric conversion materials, coatings and daily chemical materials, and can also be used to manufacture wind-solar electrodes, transformers and various optical devices. Due to its unique properties, zinc oxide with specific size, morphology, dimensionality and monodispersity can realize further assembly of materials and construct functional structural systems....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y40/00
Inventor 陈皑张英王海荣李泽松申颖娉
Owner 舟山市质量技术监督检测院
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