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A method for preparing spherical tin oxide nanomaterials

A stannous oxide and nanomaterial technology, which is applied in the directions of tin oxide and nanotechnology, can solve the problems of increasing the difficulty of preparing stannous oxide nanomaterials, the purity of the prepared products is not high, and the human body is polluted, so as to achieve low production cost and environmental protection. Friendly, easy-to-use effects

Active Publication Date: 2017-05-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solution chemical method is currently the main method used to prepare stannous oxide, mainly due to the simple equipment and controllable temperature conditions of this method, but because stannous oxide is a metastable compound, it is easily oxidized into a high-valence compound under hydrothermal conditions. state, resulting in low purity of the prepared product, and various means must be used to remove impurities in the follow-up, which increases the difficulty of preparing stannous oxide nanomaterials. In addition, various organic chemical reagents must be used in the preparation of stannous oxide by solution chemical methods, which will Cause serious pollution and harmful to human body

Method used

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  • A method for preparing spherical tin oxide nanomaterials
  • A method for preparing spherical tin oxide nanomaterials
  • A method for preparing spherical tin oxide nanomaterials

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Experimental program
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Effect test

Embodiment 1

[0023] To analyze pure SnO 2 (purity 99.5%), SiO 2 (purity 99.5%) and sodium humate as raw materials are respectively ground to -0.074mm particle size and the mass percentage is not less than 80%; 2 :SiO2 2 : Na molar ratio is 1:0.25:0.07 and mixed evenly; put the mixed powder material into CO and CO 2 The composition of the roasting atmosphere is heated and roasted, the roasting temperature is 950°C, and the roasting atmosphere is [CO / (CO+CO 2 )] was 12.5%, the roasting time was 120min, and the roasting flue gas was passed into deionized water with a temperature of 2°C. After the reaction was over, the solution was filtered, dehydrated, and dried to finally obtain high-purity spherical stannous oxide nanomaterials. The SnO content of the product was tested 99.6%, SnO yield 78.5%.

[0024] The XRD result of the prepared product under this condition is shown in the appendix figure 2 , the scanning electron microscope energy spectrum of the product is shown in image 3 . ...

Embodiment 2

[0026] To analyze pure SnO 2 (purity 99.5%), SiO 2 (purity 99.5%) and sodium humate as raw materials are respectively ground to -0.074mm particle size and the mass percentage is not less than 80%; 2 :SiO2 2 : Na molar ratio is 1:0.2:0.08 and mixed evenly; put the mixed powder material into CO and CO 2 Composition of the roasting atmosphere heating and roasting, the roasting temperature is 875 ° C, the roasting atmosphere is [CO / (CO+CO 2 )] was 17.5%, the roasting time was 100min, and the roasting flue gas was passed into deionized water with a temperature of 5°C. After the reaction was over, the solution was filtered, dehydrated, and dried to finally obtain high-purity spherical stannous oxide nanomaterials. The SnO content of the product was tested 99.7%, SnO yield 76.3%; the appearance of the product is uniform spherical particles, and the diameter is in the range of 100-200 nanometers.

Embodiment 3

[0028] To analyze pure SnO 2 (purity 99.5%), SiO 2 (purity 99.5%) and sodium humate as raw materials are respectively ground to -0.074mm particle size and the mass percentage is not less than 80%; 2 :SiO2 2 : Na molar ratio is 1:0.1:0.05 and mixed evenly; put the mixed powder material into CO and CO 2 Composition of the roasting atmosphere heating and roasting, the roasting temperature is 800 ° C, the roasting atmosphere is [CO / (CO+CO 2 )] was 5%, the roasting time was 80min, and the roasting flue gas was passed into deionized water with a temperature of 10°C. After the reaction, the solution was filtered, dehydrated, and dried to finally obtain high-purity spherical stannous oxide nanomaterials. The SnO content of the product was tested 98.5%, SnO yield 73.2%; the product shows that the shape is uniform spherical particles, and the diameter is in the range of 100-200 nanometers.

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Abstract

The invention discloses a method for preparing a spherical stannous oxide nanomaterial. According to the method, stannic oxide, silicon dioxide and sodium humate are ground, mixed, put in a CO / (CO+CO2) atmosphere and calcined at a high temperature, smoke produced during calcination is introduced to water at the temperature under 10 DEG C, and the spherical stannous oxide nanomaterial is obtained through separation in water. The prepared stannous oxide nanomaterial has a regular spherical shape in appearance, uniform particle sizes and high purity, the method is simple and convenient to operate and environment-friendly and facilitates industrial production, and the production cost is low.

Description

technical field [0001] The invention relates to a preparation method of a spherical tin oxide nano material, belonging to the technical field of metal oxide nano material preparation. Background technique [0002] Stannous oxide is a +2-valent oxide of tin, insoluble in water and alcohol, but soluble in common acids and alkalis, so it can be used as an intermediate raw material for other tin compounds. SnO is an excellent P-type oxide semiconductor material, which is commonly used as a reducing agent and catalyst, and is also used to prepare stannous salt and battery electrode materials, and is also widely used in electroplating and glass ceramic industries. [0003] At present, there are many preparation methods for these two semiconductor materials, and the preparation methods involved include physical methods such as magnetron sputtering, atomic beam deposition, electron beam deposition, and high-temperature combustion synthesis, as well as direct precipitation, microemul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02B82Y40/00
CPCC01G19/02C01P2002/72C01P2004/03C01P2004/32C01P2004/62C01P2006/80
Inventor 张元波苏子键李光辉姜涛刘兵兵范晓慧彭志伟黄柱成郭宇峰杨永斌李骞陈许玲甘敏徐斌张鑫陈迎明杜明辉刘继成欧阳学臻
Owner CENT SOUTH UNIV
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