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Preparation method of nano-zinc oxide

A nano-zinc oxide and oxidant technology, applied in zinc oxide/zinc hydroxide, nanotechnology and other directions, can solve the problems of complex nano-zinc oxide process and insufficient specific surface area, and achieve easy flow operation, smooth operation process, and specific surface area. big effect

Inactive Publication Date: 2016-12-14
王凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-cost, simple production process and easy-to-operate method for preparing nano-zinc oxide with a large specific surface area, so as to solve the problems of complex process and insufficient specific surface area in the prior art nano-zinc oxide

Method used

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Embodiment Construction

[0022] The present invention will be further described below in combination with specific embodiments.

[0023] A preparation method of nano-zinc oxide, comprising the steps of:

[0024] A. Acid dissolution: Dissolve one or more of zinc-containing materials—such as zinc ash, zinc powder, zinc particles, zinc oxide, and zinc salt—in the prepared dilute acid solution. The initial concentration of the dilute acid solution is 0.5-2.0mol / L, control the liquid-solid ratio to 1:2-4, heat to near boiling, react for 1-2.5 hours, add an oxidant according to the iron content, the oxidant includes one of hydrogen peroxide, blown air oxidation, and persulfate species, preferably hydrogen peroxide, the acidity at the end of the reaction is controlled to be pH=5.0-5.5, the solution contains 0.5-2.0 mol / L of zinc, and the solution contains 10 mg / L of iron. The concentration control of the acid is very important. The acidity is too high or too low, which is related to the zinc content in the ...

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Abstract

The invention relates to a preparation method of nano-zinc oxide. The preparation method comprises the following steps: performing acid dissolving, purification, settling, washing, filtration, dehydration and drying on a zinc-containing material serving as a raw material, and performing smashing and screening to obtain a final product. The raw materials used in the preparation method disclosed by the invention are readily available, and the process is simple; the prepared nano-zinc oxide is large in specific surface area and high in zinc oxide content.

Description

【Technical field】 [0001] The invention relates to a method for preparing nanometer materials, in particular to a method for preparing nanometer zinc oxide with a high specific surface area. 【Background technique】 [0002] Nano-zinc oxide is a new multifunctional inorganic material facing the 21st century. Due to the fine grain size and high specific surface area, it exhibits many special properties. It shows great promise in catalysis, optics, magnetism and medicine. Many special functions make it have more important application value in many fields such as ceramics, chemical industry, electron optics, medicine, etc., and it has magical effects that ordinary zinc oxide cannot match. [0003] Due to the excellent properties and attractive application prospects of nano-zinc oxide, the research and development and production of nano-zinc oxide has a huge potential market. The nanometer zinc oxide that prior art method makes has following weak point: 1. hydrolysis environment c...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y40/00
CPCC01G9/02C01P2006/12C01P2006/80
Inventor 王凯
Owner 王凯