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Method for preparing monodisperse indium oxide nanometer porous microsphere

A nanoporous, indium oxide technology, applied in chemical instruments and methods, nanotechnology, inorganic chemistry, etc., can solve the problems of difficult large-scale production, complex process, high cost, and achieve simple production equipment and large specific surface area. , the effect of convenient operation

Inactive Publication Date: 2013-07-03
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technologies have the disadvantages of complicated process, high cost and low efficiency, and it is difficult to carry out large-scale production

Method used

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  • Method for preparing monodisperse indium oxide nanometer porous microsphere
  • Method for preparing monodisperse indium oxide nanometer porous microsphere
  • Method for preparing monodisperse indium oxide nanometer porous microsphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Mixing and stirring: use indium trichloride tetrahydrate as raw material, dissolve in deionized water to make a solution of 0.02 mol / liter, and then follow the molar ratio of indium trichloride tetrahydrate: citric acid as 1:3 Ratio, add citric acid as an additive, stir and mix evenly, and then add urea as a precipitant according to the ratio of indium trichloride tetrahydrate: urea molar ratio of 1:10, stir magnetically for 10 minutes, and mix evenly;

[0019] (2) Hydrothermal reaction and solid-liquid separation: move the mixed solution in step (2) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct hydrothermal reaction at 130°C for 12 hours, and then The product after the hydrothermal reaction is separated from solid and liquid by a centrifuge, and the obtained solid product is washed several times with deionized water and ethanol;

[0020] (3) Drying and calcination: the solid product obtained in step (3) was placed in a drying oven, d...

Embodiment 2

[0022] (1) Mixing and stirring: use indium trichloride tetrahydrate as raw material, dissolve it in deionized water to make a solution of 0.1 mol / liter, and then follow the molar ratio of indium trichloride tetrahydrate: citric acid as 1: 6 Ratio, add citric acid as an additive, stir and mix evenly, then add urea as a precipitating agent according to the ratio of indium trichloride tetrahydrate: urea molar ratio of 1: 20, stir magnetically for 10 minutes, and mix evenly;

[0023] (2) Hydrothermal reaction and solid-liquid separation: move the mixed solution in step (2) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, and conduct a hydrothermal reaction at 140°C for 18 hours, then The product after the hydrothermal reaction is separated from solid and liquid by a centrifuge, and the obtained solid product is washed several times with deionized water and ethanol;

[0024] (3) Drying and calcination: the solid product obtained in step (3) was placed in a dryi...

Embodiment 3

[0026] (1) Mixing and stirring: use indium trichloride tetrahydrate as raw material, dissolve in deionized water to make a solution of 0.04 mol / liter, and then follow the molar ratio of indium trichloride tetrahydrate: citric acid as 1:5 Ratio, add citric acid as an additive, stir and mix evenly, and then add urea as a precipitant according to the ratio of indium trichloride tetrahydrate: urea molar ratio of 1:15, stir magnetically for 10 minutes, and mix evenly;

[0027] (2) Hydrothermal reaction and solid-liquid separation: move the mixed solution in step (2) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct hydrothermal reaction at 150°C for 18 hours, and then The product after the hydrothermal reaction is separated from solid and liquid by a centrifuge, and the obtained solid product is washed several times with deionized water and ethanol;

[0028] (3) Drying and calcination: the solid product obtained in step (3) was placed in a drying oven, d...

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Abstract

The invention provides a method for preparing a monodisperse indium oxide nanometer porous microsphere, and belongs to the technical field of function materials. The preparation method particularly comprises the following steps: adding citric acid with a certain molar ratio in indium chloride aqueous solution, mixing intensively, adding moderate urea as a precipitant, and dispersing uniformly; sealing the mixed solution in an autoclave and conducting water thermal reaction for a period of time, and then centrifugalizating, washing and drying; calcining in a muffle furnace in air to obtain the monodisperse indium oxide nanometer porous microsphere. The method provided by the invention has low cost, simple manufacturing technology, high productivity, and is easy to realize industrialization and mass production. The indium oxide nanometer microsphere produced by the method has a neat appearance, uniform disperse, has a porous structure and a larger specific surface area, and can be applied in the field of solar cells, FPDs (Flat Panel Display), photo-electron devices, gas sensors and the like.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of monodisperse indium oxide nanoporous microspheres. Background technique [0002] In 2 o 3 It is an n-type wide bandgap semiconductor material with low resistivity and high catalytic activity. It has been widely used in solar cells, flat panel displays, optoelectronic devices and gas sensors. In recent years, due to the characteristics of high specific surface area and favorable gas adsorption and desorption, porous structure nano functional materials have attracted the attention of researchers. A large number of studies have reported that porous structure In 2 o 3 Preparation and application of nanomaterials. Such as Yuan Hao et al. (Yuan Hao, Cheng Zhixuan, Zhang Yuan, Xie Lili. In 2 o 3 Preparation of nanoporous materials and study on its formaldehyde gas-sensing properties[J]. Materials Bulletin, 2009, 23, 45-47) Using ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00B82Y40/00
Inventor 宋鹏王琦刘世权李嘉杨中喜
Owner UNIV OF JINAN
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