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Method for preparing superfine zinc oxide and crystal whisker of zinc oxide

A zinc oxide whisker and zinc oxide technology, which is applied in zinc oxide/zinc hydroxide, chemical instruments and methods, single crystal growth, etc., can solve the problems of large one-time investment, high cost, complex process technology, etc.

Inactive Publication Date: 2006-02-01
DALIAN JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two methods are complicated in technology, high in cost and large in one-time investment.

Method used

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  • Method for preparing superfine zinc oxide and crystal whisker of zinc oxide

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Embodiment Construction

[0015] Such as figure 1 The preparation method of shown superfine zinc oxide and zinc oxide whisker, its technological process comprises:

[0016] It is prepared by the uniform precipitation method through the interaction of ion exchange resin and zinc salt: add a certain concentration of zinc sulfate solution and a certain volume of regenerated strong basic anion exchange resin (201×7 type) into the reaction vessel, at a certain Temperature (20, 40, 60, 80°C) and stirring conditions, react for 3 hours, wash the resin, age the obtained washing solution for a certain period of time, filter and separate, and finally dry at 70°C to obtain the precursor of zinc oxide Bulk zinc hydroxide; then, place it in a heating furnace and calcinate at 500-800°C for 3 hours to obtain white zinc oxide.

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Abstract

A process for preparing superfine zinc oxide particles and the crystal whiskers of zinc oxide includes such steps as preparing zinc hydroxide by uniform precipitation method in which the ionic exchange resin is used as precipitant and template, deposition separation, drying and calcining. Its advantages are no need of washing precursor and low cost.

Description

technical field [0001] The invention relates to a preparation method of zinc oxide, in particular to a preparation method of ultrafine zinc oxide and zinc oxide whiskers. Background technique [0002] Zinc oxide is a direct wide-bandgap semiconductor material with a wurtzite crystal structure. It has a variety of excellent physical properties and is widely used in rubber, ceramics, coatings, and optoelectronics. Ultrafine zinc oxide, due to its small particle size and large specific surface area, has surface effect, quantum size effect and Kubo effect, and exhibits many special properties, such as non-toxic and non-migratory, fluorescent, piezoelectric, absorption and scattering UV capability, etc. It has a wide range of uses in rubber, ceramics, daily chemicals, coatings, magnetic materials, etc., and zinc oxide whiskers are caused by their complete crystal structure, fewer internal defects, and their strength can be close to the theoretical value of complete crystal mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02C30B29/18
Inventor 李彦生关敏李刚赵红
Owner DALIAN JIAOTONG UNIVERSITY
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