Preparation method of porous structured cubic indium oxide gas sensitive material

A porous structure and indium oxide technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, analytical materials, etc., can solve problems such as time-consuming and laborious, destroying fish samples, and complicated operations

Inactive Publication Date: 2017-09-29
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used fish freshness detection method is to measure the composition of adenosine triphosphate decomposition products in fish to judge the freshness by chemical means. Developing a non-destructive, fast and convenient method for fish freshness detection using sensitive sensors
Semiconducting metal oxide In 2 o 3 It is already known as a gas-sensing material, but the research on using it to detect trimethylamine (TMA) gas to make fish freshness sensors is still in its infancy

Method used

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  • Preparation method of porous structured cubic indium oxide gas sensitive material
  • Preparation method of porous structured cubic indium oxide gas sensitive material
  • Preparation method of porous structured cubic indium oxide gas sensitive material

Examples

Experimental program
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Effect test

Embodiment 1

[0016] (1) Weigh a certain amount of indium trichloride tetrahydrate and trimethylamine, and dissolve them in 40 mL of deionized water, in which the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of trimethylamine is 0.025 mol / L , and the molar ratio of indium trichloride tetrahydrate and trimethylamine is controlled to be 1:1;

[0017] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct a hydrothermal reaction at 180 °C for 12 h, and then use the hydrothermal reaction product The centrifuge is used for solid-liquid separation, and the obtained solid product is washed several times with deionized water and ethanol;

[0018] (3) The solid product obtained in step (2) was placed in a drying oven, dried at 60 °C, then placed in an alumina crucible and placed in a muffle furnace, and heat-treated at 500 °C for 3 h to obtain a porous indium oxide cubic gas-sensing mate...

Embodiment 2

[0020] (1) Weigh a certain amount of indium trichloride tetrahydrate and trimethylamine, and dissolve them in 40 mL of deionized water, in which the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of trimethylamine is 0.05 mol / L , and control the mol ratio of indium trichloride tetrahydrate and trimethylamine to be 1:2;

[0021] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct a hydrothermal reaction at 180 ºC for 12 h, and then use the hydrothermal reaction product The centrifuge is used for solid-liquid separation, and the obtained solid product is washed several times with deionized water and ethanol;

[0022] (3) The solid product obtained in step (2) was placed in a drying oven, dried at 60 °C, then placed in an alumina crucible and placed in a muffle furnace, and heat-treated at 500 °C for 3 h to obtain a porous indium oxide cubic gas-sensing material . ...

Embodiment 3

[0024] (1) Weigh a certain amount of indium trichloride tetrahydrate and trimethylamine, and dissolve them in 40 mL of deionized water, in which the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of trimethylamine is 0.025 mol / L , and the molar ratio of indium trichloride tetrahydrate and trimethylamine is controlled to be 1:1;

[0025] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct a hydrothermal reaction at 200 °C for 16 h, and then use the product after the hydrothermal reaction The centrifuge is used for solid-liquid separation, and the obtained solid product is washed several times with deionized water and ethanol;

[0026] (3) The solid product obtained in step (2) was placed in a drying oven, dried at 60 °C, then placed in an alumina crucible and placed in a muffle furnace, and heat-treated at 500 °C for 3 h to obtain a porous indium oxide cubic gas-se...

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Abstract

The present invention provides a preparation method of a porous structured cubic indium oxide gas sensitive material. The preparation method includes the following steps: the porous structured cubic indium oxide gas sensitive material is prepared from indium (III) chloride tetrahydrate and trimethylamine as raw materials through hydrothermal reaction and calcination treatment. The method has the advantages of simple process, no requirement of the use of any surfactant, and low cost, and the obtained porous structured cubic indium oxide gas sensitive material has a porous structure, and has good trimethylamine gas sensing properties, so that the obtained porous structured cubic indium oxide gas sensitive material has a long-term application prospect in the detection of meat food freshness.

Description

technical field [0001] The invention relates to a method for preparing a porous indium oxide cubic gas-sensing material, which belongs to the technical field of advanced nano functional material preparation technology. Background technique [0002] At present, as the demand for fish food in the market increases, the detection of fish freshness becomes more and more important. Fish freshness is not only an important indicator to measure and judge the quality of fish food, but also related to people's health and quality of life. The most commonly used fish freshness detection method is to measure the composition of adenosine triphosphate decomposition products in fish to judge the freshness by chemical means. Sensitive sensor to develop a non-destructive, fast and convenient fish freshness detection method. Semiconducting metal oxide In 2 o 3 It is already known as a gas-sensing material, but the research on using it to detect trimethylamine (TMA) gas to make a fish freshn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00G01N27/12B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G15/00C01P2004/03C01P2004/04C01P2004/38G01N27/127
Inventor 张苏宋鹏王琦杨中喜位祺
Owner UNIV OF JINAN
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