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Method for stably dispersing metal oxide nanoparticles in aqueous phase

A technology of nanoparticles and oxides, which is applied in chemical instruments and methods, preparation of oxides/hydroxides, oxygen/ozone/oxides/hydroxides, etc., can solve the difficulty of dispersing and cleaning metal oxide nanoparticles, disperse Poor stability, irritating to the human body and other problems, to achieve the effect of long-term storage, high stability and low cost

Inactive Publication Date: 2017-11-07
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0007] In view of the above existing problems or deficiencies, in order to solve the problems of difficulty in dispersing and cleaning metal oxide nanoparticles, high cost, poor dispersion stability and irritation to the human body, the present invention provides a method for stably dispersing metal oxide nanoparticles in an aqueous phase method

Method used

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  • Method for stably dispersing metal oxide nanoparticles in aqueous phase
  • Method for stably dispersing metal oxide nanoparticles in aqueous phase

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings.

[0022] Step 1: Weigh 0.3g of nanocellulose with a diameter of 4-10nm and a length of 1000-3000nm, and 50g of deionized water, and put them into a beaker with a capacity of 100ml. Add a magnetic stirring bar, close the mouth of the beaker, place it on a magnetic stirrer and start stirring. The stirring speed is 800 rpm, and the stirring time is 10 min. Then place it on a centrifuge, centrifuge for 2 minutes under the condition of 3000 rpm, configure a dispersion with a nanocellulose content of 0.3 wt%, and set aside;

[0023] Step 2: Weigh 1g of titanium dioxide nanoparticles with a particle size of 5-100nm, 50g of deionized water, add them to a 100ml beaker, assemble them on a high-speed mixer, and stir at a stirring rate of 1000 rpm for 10 minutes to obtain Preliminary dispersed titanium dioxide aqueous dispersion;

[0024] Step 3: Add...

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Abstract

The invention belongs to applications of nanomaterials in fields of chemical engineering and food, and particularly relates to a method for stably dispersing metal oxide nanoparticles in an aqueous phase. CNF (cellulose nanofiber) is taken as a dispersion aid for dispersing the metal oxide nanoparticles. The method is simple and convenient to operate, low in cost, green and pollution-free, a dispersion solution of the metal oxide nanoparticles prepared with the method has good dispersibility and high stability, subsequent use and long-term storage of the dispersion solution are facilitated, usage efficiency of the metal oxide nanoparticles is improved, and application fields of the metal oxide nanoparticles are further broadened.

Description

technical field [0001] The invention belongs to the application of nanometer materials in the fields of chemical industry and food, and in particular relates to a method for stably dispersing metal oxide nanoparticles in an aqueous phase. Background technique [0002] Nanomaterials have special mechanical, electrical, magnetic, optical, and chemical properties due to nanoscale effects, surface effects, and quantum size effects. Metal oxide nanoparticles are a class of nanomaterials with a wide range of uses, and have broad application value and prospects in the fields of chemical industry, electronics, food, biology, and medicine. [0003] For example, nano-titanium dioxide particles have very valuable optical properties, high chemical stability, thermal stability, non-toxicity, superhydrophilicity, and non-migration, and are widely used in the automotive field, anti-ultraviolet materials, textiles, and photocatalysts. , sunscreen, paint, paper industry, etc.; nano-zinc oxi...

Claims

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Application Information

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IPC IPC(8): C01B13/14
CPCC01B13/145
Inventor 吴露向勇杨德江李乐费益胡琮瑾
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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