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Method for preparing Nano granules of stannic oxide

A technology of nano-tin oxide and particles, applied in the field of nano-materials, can solve the problems of cumbersome, time-consuming, and long gelation time, and achieve the effects of improving efficiency, good gelation quality, and simplifying operations

Inactive Publication Date: 2006-07-05
GUANGDONG YESER IND CO LTD
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Problems solved by technology

[0004] Preparation of nano-SnO by traditional citric acid sol method 2 , needs a water bath or other heat sources to slowly evaporate the water, and the gelation time is long
However, the citric acid combustion method requires metal nitrate as a strong oxidant, and the process of preparing tin nitrate is cumbersome and time-consuming.

Method used

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  • Method for preparing Nano granules of stannic oxide
  • Method for preparing Nano granules of stannic oxide
  • Method for preparing Nano granules of stannic oxide

Examples

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[0015] 1. Take SnCl 4 ·5H 2 About 7.0188g of O, 8.4065g of citric acid, and 0.3g of polyethylene glycol (400) were added to 10ml of deionized water and mixed, stirred evenly, then put into a microwave oven and heated for 9min with medium microwave power, and then roasted in a muffle furnace at 600°C for 3h . According to the results of XRD, the grain size of nanoparticles obtained by the Scherrer equation is 17.4nm.

[0016] 2. Take SnCl 4 ·5H 2 Add about 7.0188g of O, 8.4056g of citric acid, and 0.3g of polyethylene glycol (400) into 10ml of deionized water and mix, stir evenly, then put it in a microwave oven and heat it with medium microwave power for 13min, then bake it in a muffle furnace at 500°C for 4h . According to the results of XRD, the grain size of nanoparticles obtained by the Scherrer equation is 18.3nm

[0017] 3. Take SnCl 4 ·5H 2 About 7.0188g of O, 16.8112g of citric acid, and 0.3g of polyethylene glycol (600) were added to 15ml of deionized water an...

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Abstract

This invention discloses a method to prepare a nano particle of tin oxide. In this method, the salt of tin, citric acid and poly (ethylene glycol) are used as raw materials. After dissolving in DIW, the solution is heated by microwave to form the precursor of gel, which is then baked in muffle furnace to prepare nano particle of tin oxide with good distribution and low aggregation. The average size of the particle is about 17.0 nanometers. The method has the characteristics of simple process, short cycle time of production.

Description

technical field [0001] The invention belongs to the field of nanometer materials. The invention specifically relates to a method for preparing nanometer tin oxide particles. The material can be used to prepare gas sensitive elements, conductive materials, catalysts, catalyst carriers and the like. Background technique [0002] Nano tin oxide is an important inorganic functional material. Tin oxide has the characteristics of high melting point, not easy to decompose at high temperature, stable chemical properties, not easy to react with strong acid and strong alkali, fast response speed, etc., and is widely used in gas-sensitive materials. As an n-type semiconductor, tin oxide has excellent optoelectronic properties and can be used as a conductive material. Tin oxide is also a good catalyst and catalyst carrier. It not only has strong complete oxidation ability, but also has good selective oxidation activity and hydrothermal stability. It can be used for hydrocarbon oxidatio...

Claims

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Application Information

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IPC IPC(8): C01G19/02
Inventor 余林孙明郝志峰孙建黄伟杰
Owner GUANGDONG YESER IND CO LTD
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