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A method for directly preparing tin dioxide nanoparticles by utilizing metallic tin

A technology of tin dioxide and nanoparticles, applied in the direction of tin oxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of environmental pollution, complexity, and high cost, and achieve the goal of avoiding particle agglomeration and high purity Effect

Inactive Publication Date: 2017-03-29
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such methods have problems such as polluting the environment, high cost, wasting resources, and complicated post-processing processes.

Method used

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  • A method for directly preparing tin dioxide nanoparticles by utilizing metallic tin
  • A method for directly preparing tin dioxide nanoparticles by utilizing metallic tin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve 1.0 g of elemental iodine in 12.5 ml of absolute ethanol, and weigh 0.2 g of anhydrous sodium carbonate and dissolve it in 6.0 ml of deionized water; mix the above-mentioned iodine / ethanol solution with aqueous sodium carbonate solution, and add 0.4 g of tin powder of elemental metal , after continuous stirring, a reddish-brown mixed solution was obtained; the above mixed solution was quickly transferred to a stainless steel reactor to transfer all the tin powder into the reactor, reacted at 280°C for 3 days, cooled naturally to room temperature, and centrifuged to obtain The solid was washed successively with ethanol and deionized water, and dried to obtain tin dioxide nanoparticles with uniform particle size and good dispersion.

Embodiment 2

[0023] Dissolve 2.0 grams of iodine elemental substance in 8.0 milliliters of absolute ethanol, and weigh 0.8 grams of anhydrous sodium carbonate and dissolve it in 6.0 milliliters of deionized water; mix the above-mentioned iodine / ethanol solution with sodium carbonate aqueous solution, and add 0.6 grams of metal elemental tin powder , after continuous stirring, a reddish-brown mixed solution was obtained; the above mixed solution was quickly transferred to a stainless steel reactor to transfer all the tin powder into the reactor, reacted at 220°C for 1 day, cooled naturally to room temperature, and centrifuged to obtain The solid was washed successively with ethanol and deionized water, and dried to obtain tin dioxide nanoparticles.

Embodiment 3

[0025] Dissolve 0.65 grams of iodine elemental substance in 5.5 milliliters of absolute ethanol, and weigh 0.27 grams of anhydrous sodium carbonate and dissolve it in 5.5 milliliters of deionized water; mix the above-mentioned iodine / ethanol solution with sodium carbonate aqueous solution, and add 0.2 grams of metal elemental tin powder , after continuous stirring, a red-brown mixed solution was obtained; the above mixed solution was quickly transferred to a stainless steel reactor to transfer all the tin powder into the reactor, reacted at 200°C for 2 days, cooled naturally to room temperature, and centrifuged to obtain The solid was washed successively with ethanol and deionized water, and dried to obtain tin dioxide nanoparticles with good crystallinity.

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Abstract

The invention belongs to the field of nano material preparation, and particularly relates to a method for directly preparing stannic oxide nano-particles by using metallic tin. The method specifically comprises the steps of placing metallic tin in a mixed solution of iodine / ethyl alcohol and sodium carbonate, and obtaining a nano stannic oxide material through a high-temperature water / solvent thermal reaction. The stannic oxide nano-particles with a nanoscale size are formed by unequal diffusion of different matters between the interfaces of two phases on the basis of a Kirkendall effect. Through the method, elementary substance tin can be directly used as a raw material, the stannic oxide nano-particles are prepared under the condition of mild pH closed to be neutral, the obtained product is high in purity, an organic template reagent is not needed, energy consumption and pollution caused by high-temperature roasting can be avoided, and the agglomeration of the nano-particles at the high temperature can be avoided.

Description

technical field [0001] The invention belongs to the field of preparation of nanometer materials, and in particular relates to a method for directly preparing tin dioxide nanoparticles by using metal tin. Background technique [0002] Tin dioxide (SnO 2 ) is an important wide-bandgap semiconductor material. In recent years, nanostructured SnO 2 Due to their unique optical properties, electrical properties, and chemical stability, materials have shown important application value in catalysis, gas-sensitive materials, sensor devices, and optoelectronic devices. SnO 2 Innovative research on the application and preparation methods of nanostructured materials is of great significance. [0003] Highly dispersed SnO 2 Nanoparticles have the characteristics of small particle size, large specific surface area, high surface energy, and large proportion of surface atoms, so highly dispersed SnO 2 Nanoparticles tend to have higher catalytic activity and gas sensitivity. [0004] A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02B82Y30/00
Inventor 纪妍妍赵博邓轩刘强李江
Owner TIANJIN POLYTECHNIC UNIV
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