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

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 ratiobetween 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 20kHz, 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....

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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

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