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Method for preparing NiO-In2O3 nano composite material

A nanocomposite material, nio-in2o3 technology, applied in gallium/indium/thallium compounds, nanotechnology, nanotechnology, etc.

Inactive Publication Date: 2017-10-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as we know, few gas-sensing materials based on the composite of indium oxide and nickel oxide have been reported.

Method used

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  • Method for preparing NiO-In2O3 nano composite material
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  • Method for preparing NiO-In2O3 nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Weigh a certain amount of indium trichloride tetrahydrate and dodecylamine, and dissolve them in 35 mL of absolute ethanol, wherein the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of dodecylamine is 0.025 mol / L, and the molar ratio of indium trichloride tetrahydrate and dodecylamine is controlled to be 1:1;

[0018] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct a hydrothermal reaction at a temperature of 180 °C for 8 h, and then use the product after the hydrothermal reaction The centrifuge was used for solid-liquid separation, and the obtained solid product was washed with deionized water and ethanol several times. The obtained solid product was placed in a drying oven, dried at 60 ° C, and then placed in an alumina crucible and placed in a muffle furnace. Heat treatment at ℃ for 3 h to obtain indium oxide powder;

[0019] (3) Disperse the in...

Embodiment 2

[0022] (1) Weigh a certain amount of indium trichloride tetrahydrate and dodecylamine, and dissolve them in 35 mL of absolute ethanol, wherein the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of dodecylamine is 0.025 mol / L, and the molar ratio of indium trichloride tetrahydrate and dodecylamine is controlled to be 1:1;

[0023] (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 was used for solid-liquid separation, and the obtained solid product was washed with deionized water and ethanol several times. The obtained solid product was placed in a drying oven, dried at 60 ° C, and then placed in an alumina crucible and placed in a muffle furnace. Heat treatment at ℃ for 3 h to obtain indium oxide powder;

[0024] (3) Disperse the indium oxide powder obtained...

Embodiment 3

[0027] (1) Weigh a certain amount of indium trichloride tetrahydrate and dodecylamine, and dissolve them in 35 mL of absolute ethanol, wherein the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of dodecylamine is 0.05 mol / L, and the molar ratio of indium trichloride tetrahydrate and dodecylamine is controlled to be 1:2;

[0028] (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 was used for solid-liquid separation, and the obtained solid product was washed with deionized water and ethanol several times. The obtained solid product was placed in a drying oven, dried at 60 ° C, and then placed in an alumina crucible and placed in a muffle furnace. Heat treatment at ℃ for 3 h to obtain indium oxide powder;

[0029] (3) Disperse the indium oxide powder...

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Abstract

The invention provides a method for preparing a NiO-In2O3 nano composite material. The method specifically comprises the steps: subjecting indium trichloride tetrahydrate and lauryl amine, which serve as raw materials, to a hydrothermal reaction, and carrying out calcining treatment, so as to obtain indium oxide nanospheres; then, laminating flaky nickel oxide to surfaces of the indium oxide microspheres by taking nickel nitrate hexahydrate, hexamethylene tetramine and trisodium citrate as raw materials, thereby finally obtaining the NiO-In2O3 nano composite material. According to the method, the production process is simple, obtained gas-sensitive materials have p-n heterojunctions formed by indium oxide and nickel oxide, show relatively high sensitivity and rapid response and recovery to acetone and can be applied to the field of acetone gas sensors, and thus, novel gas-sensitive materials with high sensitivity are obtained.

Description

technical field [0001] The present invention relates to a kind of NiO-In 2 o 3 The invention relates to a method for preparing nanocomposite materials, which belongs to the technical field of preparation technology of advanced nanometer functional materials. Background technique [0002] With the intensification of environmental pollution, the qualitative and quantitative detection of toxic and harmful gases is becoming more and more important. Nowadays, the analysis of these gases usually uses some time-consuming and expensive test instruments, such as spectral analysis and chromatographic analysis. Since the semiconductor metal oxide gas sensor has the advantages of high sensitivity, high selectivity, fast response and low price, it will be an ideal and promising substitute for detecting toxic and harmful gases in the future. Among these semiconducting metal oxides, In 2 o 3 Is a new type of gas sensitive material, and SnO 2 , ZnO, Fe 2 o 3 Compared with other trad...

Claims

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Application Information

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IPC IPC(8): C01G53/04C01G15/00G01N27/00B82Y30/00B82Y40/00
CPCC01G53/04B82Y30/00B82Y40/00C01G15/00C01P2002/72C01P2002/85C01P2004/03C01P2004/04C01P2004/32C01P2004/45C01P2004/64C01P2004/84G01N27/00
Inventor 张苏宋鹏王琦杨中喜田哲宾
Owner UNIV OF JINAN
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