Method for preparing indium oxide cubes through microwave-assisted hydrothermal method

A microwave-assisted, indium oxide technology, which is applied in chemical instruments and methods, inorganic chemistry, gallium/indium/thallium compounds, etc., can solve the problem of long time consumption of precursor solution, achieve low cost, facilitate industrial production, and good reproducibility Effect

Active Publication Date: 2013-11-27
指南者品牌管理(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the technical problem that the hydrothermal / solvothermal method takes a long time to prepare the precursor solution, and discloses a method for preparing indium oxide cubes by the microwave-assisted hydrothermal method

Method used

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  • Method for preparing indium oxide cubes through microwave-assisted hydrothermal method
  • Method for preparing indium oxide cubes through microwave-assisted hydrothermal method
  • Method for preparing indium oxide cubes through microwave-assisted hydrothermal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An indium oxide (In 2 o 3 ) The preparation method of cube is to carry out according to the following steps:

[0028] A. Weigh the molar ratio of 1:0.5 indium nitrate (In(NO 3 ) 3 4.5 H 2 O) and urea, dissolved in 100 mL of deionized water, was configured into a uniform colorless and transparent solution after magnetic stirring for 30 min;

[0029]B. Transfer the solution obtained in step A to a quartz container with a capacity of 250mL, place it in a microwave reactor, heat up to 80°C, and heat it for 15min with a power of 600W, then cool naturally and collect the microwave product;

[0030] C, centrifuging the microwave product obtained in step B, washing with deionized water and absolute ethanol three times respectively;

[0031] D, the centrifuged product obtained in step C was dried in the air at 60°C for 6 h to obtain indium hydroxide (In(OH) 3 )Precursor;

[0032] E, the indium hydroxide (In(OH) obtained in step D 3 ) precursors were calcined in a muffle ...

Embodiment 2

[0038] An indium oxide (In 2 o 3 ) The preparation method of cube is to carry out according to the following steps:

[0039] A. Weigh the molar ratio of 1:7 indium nitrate (In(NO 3 ) 3 4.5 H 2 O) and urea, dissolved in 100 mL of deionized water, was configured into a uniform colorless and transparent solution after magnetic stirring for 30 min;

[0040] B. Transfer the solution obtained in step A to a quartz container with a capacity of 250mL, place it in a microwave reactor, heat up to 100°C, heat it for 120min with a power of 1000W, cool it naturally, and collect the microwave product;

[0041] C, centrifuging the microwave product obtained in step B, washing with deionized water and absolute ethanol three times respectively;

[0042] D, the centrifuged product obtained in step C was dried in the air at 60°C for 6 h to obtain indium hydroxide (In(OH) 3 )Precursor;

[0043] E, the indium hydroxide (In(OH) obtained in step D 3 ) precursors were calcined in a muffle fur...

Embodiment 3

[0045] An indium oxide (In 2 o 3 ) The preparation method of cube is to carry out according to the following steps:

[0046] A. Weigh the molar ratio of 1:0.9 indium nitrate (In(NO 3 ) 3 4.5 H 2 O) and urea, dissolved in 100 mL of deionized water, was configured into a uniform colorless and transparent solution after magnetic stirring for 30 min;

[0047] B. Transfer the solution obtained in step A to a quartz container with a capacity of 250mL, place it in a microwave reactor, heat up to 90°C, heat it at 800W for 90min, cool it naturally, and collect the microwave product;

[0048] C, centrifuging the microwave product obtained in step B, washing with deionized water and absolute ethanol three times respectively;

[0049] D, the centrifuged product obtained in step C was dried in the air at 60°C for 6 h to obtain indium hydroxide (In(OH) 3 )Precursor;

[0050] E, the indium hydroxide (In(OH) obtained in step D 3 ) precursors were calcined in a muffle furnace at 400 °C...

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Abstract

The invention belongs to the technical field of preparation of inorganic nano-composite materials, relates to a method for preparing nano indium oxide cubes and particularly relates to a method for preparing indium oxide cubes through a microwave-assisted hydrothermal method. The method comprises the following steps: preparing a mixed solution of indium nitrate and urea, reacting in microwave, generating an indium hydroxide predecessor through centrifugal washing, and finally obtaining the final product through high-temperature roasting; carrying out preparation of the mixed solution of indium nitrate and urea as follows: weighing indium nitrate and urea which are 1:1 to 10 in molar ratio, adding deionized water for dissolving, and magnetically stirring for 30 min to obtain a uniform, colorless and transparent solution. Indium oxide which is relatively uniform in appearance is prepared through a microwave-assisted reaction, the product adopts a cubic nano-structure, time can be shortened to dozens of minutes through a microwave reaction, and better pure phase and crystal form can be achieved within a relatively short time. The method is simple in technology and good in repeatability; the used raw materials are inorganic compounds and low in cost, easy to obtain and relatively low in cost; the method conforms to the environment-friendly requirements and brings convenience for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nano-materials, and relates to nano-indium oxide (In 2 o 3 ) cubes, in particular to a method for preparing indium oxide cubes by a microwave-assisted hydrothermal method. Background technique [0002] Nano-indium oxide (In 2 o 3 ) is an important class of n-type semiconductor materials with a bandgap width of 3.6~3.75eV, high electrical conductivity and visible light transmittance, and indium oxide is widely used in chemical, biological sensing, solar cells, photocatalysis, optoelectronics and flat panel Displays and other fields have a wide range of applications. The preparation methods of indium oxide mainly include gas phase method, solid phase method and liquid phase method. The gas-phase method has high requirements on equipment parameters and low yield, so it cannot be used in industrial mass production; the particle size of nanoparticles obtained by the solid-phase me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00
Inventor 施伟东张格红范伟强关卫省吕平海
Owner 指南者品牌管理(苏州)有限公司
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