Method for preparing superfine zinc tungstate antibacterial agent by ultrasonic molten salt method

A molten salt method, zinc tungstate technology, applied in chemical instruments and methods, tungsten compounds, inorganic chemistry, etc., can solve the problems of uneven particle size distribution, high reaction temperature, silver-based antibacterial agents are easily oxidized and discolored, etc. To achieve the effect of cost reduction

Inactive Publication Date: 2011-03-09
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are certain limitations in these methods: the synthesis process is complicated, the reaction temperature is high or the reaction period is long, the obtained particle size distribution is uneven, etc.; at present,

Method used

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  • Method for preparing superfine zinc tungstate antibacterial agent by ultrasonic molten salt method
  • Method for preparing superfine zinc tungstate antibacterial agent by ultrasonic molten salt method
  • Method for preparing superfine zinc tungstate antibacterial agent by ultrasonic molten salt method

Examples

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Embodiment 1

[0029] Example 1 Na 2 WO 4 And Zn(NO 3 ) 2 Respectively formulated into an aqueous solution with a concentration of 0.2mol / L, and then Na 2 WO 4 Add Zn(NO 3 ) 2 In aqueous solution, make Na 2 WO 4 With Zn(NO 3 ) 2 The molar ratio of is 1:1; a total of 50 mL of the mixed solution is prepared; the reaction is carried out under ultrasonic heating at 20°C to 40°C under stirring conditions for 15 minutes to 45 minutes, so that the mixed solution is fully reacted and mixed. The mixed solution is filtered, washed with distilled water, and dried at 90°C for 5 hours to obtain ZnWO 4 Precursor.

Embodiment 2

[0030] Example 2 ZnWO with a molar ratio of 1:5 by weight and a total of 15g 4 Precursor and NaNO 3 Mix the salt and add 2~3mL absolute ethanol in the mortar and mix for 2h while grinding to make ZnWO 4 The precursor and the reaction medium are thoroughly mixed uniformly, and then dried at 90°C for 5 hours, then placed in an electric furnace at 360°C for 8 hours, and cooled to obtain a solidified product. Fully soak and wash the solidified product with distilled water, then filter and dry to remove the remaining molten salt, you can get ZnWO 4 Antibacterial powder.

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Abstract

The invention relates to a preparation method of compound inorganic antibacterial powder, which comprises the following steps: preparing aqueous Na2WO4 and Zn(NO3)2 solutions into a ZnWO4 precursor under an ultrasonic condition, wherein the concentrations of both the Na2WO4 solution and the Zn(NO3)2 solution are 0.2mol/L; calcining the precursor in sodium nitrate to obtain a cured product, and sufficiently soaking and washing the product in distilled water; and filtering, and drying to remove remaining molten salt so as to obtain ZnWO4 antibacterial powder. Compared with the simplex ultrasonic chemical preparation method, the ultrasonic molten salt preparation method has the advantages of regular crystal morphology and uniform particles of the ZnWO4 antibacterial powder, can prepare the ZnWO4 antibacterial agent having a particle size of 500nm or so and favorable antibacterial properties. Besides, by the invention, the facts that the high-cost silver antibacterial agent can be replaced, and the prepared antibacterial agent can be used in industries and fields of plastics, fibers, paint and the like are possible to come true.

Description

Technical field: [0001] The invention relates to a powder preparation technology, in particular to a method for preparing zinc tungstate (ZnWO) by ultrasonic and molten salt method 4 ) Methods of antibacterial agents. Background technique: [0002] With the continuous improvement of living standards, people's health and hygiene requirements for the surrounding environment and themselves are also increasing. In daily life and work, it is inevitable to frequently come into contact with a large number of harmful bacteria, fungi and viruses. These microorganisms are one of the main reasons for humans to induce infectious diseases and directly threaten people's health. In order to enhance human health and improve the working and living environment, it is of great significance to research and develop new, high-efficiency, non-toxic and side-effect antibacterial agents with excellent durability, practicality and economy. The awareness of healthy consumption has gradually taken root in ...

Claims

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Application Information

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IPC IPC(8): C01G41/00
Inventor 王黔平赵莎郭相雄李亚君吴卫华张家生刘淑贤
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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