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Preparation method of RuO2-In2O3 nano composite material

A nanocomposite material, ruo2-in2o3 technology, used in nanotechnology, nanotechnology, analytical materials, etc.

Inactive Publication Date: 2018-12-21
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 indium oxide and ruthenium oxide have been reported.

Method used

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  • Preparation method of RuO2-In2O3 nano composite material
  • Preparation method of RuO2-In2O3 nano composite material
  • Preparation method of RuO2-In2O3 nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Weigh a certain amount of indium chloride, trisodium citrate and urea and dissolve them in absolute ethanol, in which the concentration of indium chloride is 0.020 mol / L, the concentration of trisodium citrate is 0.120 mol / L, and the concentration of urea The concentration is 0.099 mol / L. And control the mol ratio of indium chloride and trisodium citrate to be 1:6;

[0018] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct a hydrothermal reaction at 140 °C for 4 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 chloride, trisodium citrate and urea and dissolve them in absolute ethanol, in which the concentration of indium chloride is 0.020 mol / L, the concentration of trisodium citrate is 0.100 mol / L, and the concentration of urea The concentration is 0.099 mol / L. And control the mol ratio of indium chloride and trisodium citrate to be 1:5;

[0023] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct a hydrothermal reaction at 140 °C for 2 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;

[0024] (3) Disperse the in...

Embodiment 3

[0027] (1) Weigh a certain amount of indium chloride, trisodium citrate and urea and dissolve them in absolute ethanol, in which the concentration of indium chloride is 0.020 mol / L, the concentration of trisodium citrate is 0.080 mol / L, and the concentration of urea The concentration is 0.099 mol / L. And control the mol ratio of indium chloride and trisodium citrate to be 1:4;

[0028] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, conduct a hydrothermal reaction at 120 °C for 4 h, and then use the product after the hydrothermal reaction The solid-liquid separation was carried out in a centrifuge, and the obtained solid product was washed several times with deionized water and ethanol. 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) Dispers...

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Abstract

The invention provides a preparation method of a RuO2-In2O3 nano composite material. The preparation method comprises the following steps: performing hydrothermal reaction on raw materials, i.e., indium trichloride tetrahydrate, urea and trisodium citrate hydrate, calcining, and obtaining cubic indium oxide; and then adopting ruthenium trichloride as a raw material, and compositing granular ruthenium oxide onto the surface of the indium oxide cube, and finally obtaining RuO2-In2O3 nano composite material. The preparation method is simple in production process, ruthenium oxide in an obtained gas sensitive material has a precious metal function and modifies indium oxide, high sensitivity and rapid response and restoration for triethylamine can be achieved, and the RuO2-In2O3 nano composite material can be used for the field of triethylamine gas sensors, thereby obtaining a novel gas sensitive material with high sensitivity.

Description

technical field [0001] The present invention relates to a kind of RuO 2 -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 ...

Claims

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Application Information

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IPC IPC(8): C01G55/00C01G15/00G01N27/12B82Y30/00
CPCG01N27/127B82Y30/00C01G15/00C01G55/004C01P2002/72C01P2002/80C01P2004/04C01P2004/03
Inventor 宋鹏田哲宾王琦郝佩杨中喜
Owner UNIV OF JINAN
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