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Preparation for nanometer metal oxide and nanometer metal oxide therefrom

A nano metal and oxide technology, applied in iron oxide, nickel oxide/nickel hydroxide, zinc oxide/zinc hydroxide, etc., can solve the problem of high equipment investment and production cost, unsuitable for popular application in small enterprises, and poor shape of nanoparticles , increase the processing cost and other problems, to achieve the effect of low production cost, neat shape and convenient operation

Inactive Publication Date: 2007-04-25
王宗良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still defects in this method. First, a large amount of absolute ethanol needs to be used in the washing and sedimentation process, which will eventually be recycled and processed, which increases the processing cost. Second, the generated nanoparticles are not in good shape.
Chinese patent (Patent No. 03151099.X) discloses "A Wet Chemical Method for Preparing Zinc Oxide Nanowires". This method firstly uses polyethylene glycol and secondly uses ultrasonic emulsification equipment, so the equipment investment and production costs are too high Not suitable for popular application in small enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1——the preparation of nanometer zinc oxide:

[0021] Take soluble zinc salts, such as zinc sulfate, zinc nitrate, zinc acetate, etc., take 100 grams of zinc sulfate in this experiment, add 800 ml of distilled water to dissolve. If necessary, the usual method can be used to carry out secondary refining and purification of the zinc sulfate solution; 1 / 1000 polyvinyl alcohol and 0.5 / 1000 polyoxyethylene ether are added to the prepared zinc sulfate solution; 84 grams of carbonic acid is added at room temperature ammonium hydrogen, the resulting precipitate was washed three times with distilled water, and dried at about 100°C to obtain bulky zinc oxide. Light yellow zinc oxide can be obtained by controlling the calcination temperature at 300°C. White zinc oxide can be obtained by controlling the calcination temperature at 600°C. The average particle size of zinc oxide is 30nm.

Embodiment 2

[0022] Embodiment 2 - the preparation of nanometer zinc oxide:

[0023] Take soluble zinc salts, such as zinc sulfate, zinc nitrate, zinc acetate, etc., take 100 grams of zinc sulfate in this experiment, add 800 ml of distilled water to dissolve. If necessary, the zinc sulfate solution can be refined and purified by the usual method; add 1 / 1000 polyvinyl alcohol, 0.5 / 1000 polyoxyethylene ether, and 3 / 1000 SCZ to the prepared zinc sulfate solution -48; add 84 grams of ammonium bicarbonate at room temperature, wash the precipitate with distilled water three times, and dry at 100° C. to obtain bulky zinc oxide. Light yellow zinc oxide can be obtained by controlling the calcination temperature at 300°C. White zinc oxide can be obtained by controlling the calcination temperature at 600°C. The average particle size of zinc oxide is 10 nm.

Embodiment 3

[0024] Embodiment 3——preparation of nano iron oxide:

[0025] Get soluble iron salt, such as 140 grams of ferrous sulfate, add 1000 milliliters of distilled water to dissolve. Refining and purifying the ferrous sulfate solution by the usual method; adding 1 / 1000 polyvinyl alcohol and 0.5 / 1000 polyoxyethylene ether, 3 / 1000 SCZ-48 and activated starch to the prepared ferrous sulfate solution; adding 168 gram of ammonium bicarbonate, the resulting precipitate was washed three times with distilled water, and dried at a temperature of 40°C-60° to obtain bulky iron oxide. Light red iron oxide can be obtained by controlling the calcination temperature at 120°C. Controlling the calcination temperature at 300°C can obtain dark red iron oxide. The average particle diameter of iron oxide is 10 nm.

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Abstract

A nanometer metallic oxide and its production are disclosed. It is carried out by: (1) dissolving soluble metal salt at ordinary temperature; (2) adding surface active agent polyving akohol and polyethenoxy ether with composite formulation into the above solution; (3) adding ammonium acid carbonate into solution obtained in the step (2) under ordinary temperature and agitating; (4) washing, drying and incinerating the precipitate to obtain non-birdnesting nanometer metallic oxide, and adding active starch or SCZ-48 when adding surface active agent. Its advantages include low cost, simple process and high reliability.

Description

(1) Technical field [0001] The invention discloses a preparation method of nanometer metal oxide and the nanometer metal oxide prepared by the method. (2) Background technology [0002] Nano-metal oxides such as nano-zinc oxide, nano-iron oxide, nano-magnesium oxide, nano-nickel oxide and nano-cobalt oxide are new, high-function fine inorganic products. Due to the specificity of the structure of nanomaterials, it has four major effects that raw materials do not have. That is, small size effect, surface and interface effect, quantum size effect and macroscopic quantum tunneling effect. The nano-metal oxides have special effects that are not possessed by ordinary metal oxides. As a result, nanomaterials exhibit unique physical and chemical properties in many aspects such as mechanics, magnetism, thermodynamics, optics, catalysis, and biological activity. It can be said that the emergence of nanomaterials has endowed nano metal oxides with new uses and functions in many scie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02C01G49/06C01G53/04
Inventor 王宗良陈建岭
Owner 王宗良