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Method for manufacturing nano-zinc oxide

A technology of nano-zinc oxide and manufacturing method, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of incapable of continuous production, unfavorable environment and safety, etc., and achieve the effects of short production cycle, easy production method and good safety.

Inactive Publication Date: 2004-12-29
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of nanomaterials by irradiation chemical technology is a relatively new method. At present, the gamma ray radiation method is widely used, which uses cobalt 60 The γ-ray irradiation reaction system released by Co isotope to obtain nanomaterials has some disadvantages: one, 60 Co isotopes are radioactive substances, and when they cannot be utilized, they will become radioactive waste, which is harmful to the environment and safety; second, the preparation of nanomaterials with gamma rays is often intermittent and cannot be produced continuously
Judging from the current situation, there are no other suitable radiation sources to prepare nano-zinc oxide materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment one: the specific preparation steps of this embodiment are as follows:

[0015] a. First, weigh a certain amount of zinc sulfate with an FA1004 dish-type electronic balance, dissolve it in distilled water, and make the concentration of zinc ions reach 0.008mol / 100ml; then add the hydrophilic surfactant polyvinyl alcohol (PVA), the addition amount is 0.7 g / 100ml; after stirring evenly, add oxidative radical OH · scavenger isopropanol (IPA), the addition amount is 20ml / 100ml; then put the solution into a specific container, and then add Add ammonia (NH 3 )H 2 O, the addition is 2ml / 100m, so that it forms a zinc hydroxide colloidal solution;

[0016] b. the colloidal solution prepared above is irradiated under the radiation of the electron beam produced by the 2.5Mev, 40mA denamitron electron accelerator, and its irradiation dose is 10Mrad;

[0017] c. Then wash the irradiated sample with absolute alcohol, and centrifuge with a high-speed centrifuge, and repe...

Embodiment 2

[0023] Embodiment two: the specific preparation steps of this embodiment are as follows:

[0024] a. First, weigh a certain amount of zinc sulfate with an FA1004 dish-type electronic balance, dissolve it in distilled water, and make the concentration of zinc ions reach 0.01mol / 100ml; then add the hydrophilic surfactant polyvinyl alcohol (PVA), the addition is 1 gram / 100ml; After stirring evenly, add oxidative free radical OH radical scavenger isopropanol (IPA), the addition is 30ml / 100ml; Then the solution is packed in a specific container, In addition, ammonia water (NH 3 )H 2 O, the addition is 8ml / 100m, so that it forms a zinc hydroxide colloidal solution;

[0025] b. The colloidal solution prepared above is irradiated under the radiation of the electron beam produced by the 2.5Mev, 40mA denamitron electron accelerator, and the irradiation dose is 40Mrad;

[0026] c. Then wash the irradiated sample with absolute alcohol, and centrifuge with a high-speed centrifuge, and r...

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Abstract

The present invention is preparing process of nano zinc oxide or superfine zinc oxide particle, and belongs to the field of nano material preparing technology in radiochemistry. The radiochemical process adopts zinc sulfate as zinc particle source, ammonia water as precipitant, IPA as oxidizing free clearing agent in aqua, hydrophilic surfactant PVA for controlling crystal kernel growing speed and particle size, and electron accelerator to produce electron beam for irradiation treatment, and the solution after being irradiated is washed, centrifugally separated and stoved to obtain white fibrous nano zinc oxide powder with high purity. The present invention has simple technological process, short production period, no pollution, and high safety.

Description

technical field [0001] The invention relates to a method for manufacturing nano zinc oxide, that is, a method for preparing ultrafine particles of zinc oxide, and belongs to the technical field of radiation chemical manufacturing nano material technology. Background technique [0002] In recent years, due to its small size and large specific surface area, nano zinc oxide not only has the properties and uses of ordinary zinc oxide, but also has the characteristic surface effect and quantum size effect of ultrafine particles. These unique characteristics make it more widely used. Nano-zinc oxide is non-toxic, non-migrating, fluorescent, piezoelectric, and has strong absorption and scattering properties for ultraviolet light, which makes zinc oxide widely used in Gas sensors, phosphors, UV-absorbing materials, varistors, image recording materials, piezoelectric materials, varistors, high-efficiency catalysts, plastic films, magnetic materials, aircraft coatings, rubber reinforc...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 周瑞敏辛立辉
Owner SHANGHAI UNIV
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