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Preparation method of indium oxide air-sensitive material having loaded gold nanoparticles in hollow and hierarchical structure

A gold nanoparticle and hierarchical structure technology, applied in nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve problems such as high-tech deep processing exploration is still in its infancy

Inactive Publication Date: 2015-11-25
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is the country with the richest indium resources and a major producer of indium, but the exploration of its high-tech deep processing is still in its infancy

Method used

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  • Preparation method of indium oxide air-sensitive material having loaded gold nanoparticles in hollow and hierarchical structure
  • Preparation method of indium oxide air-sensitive material having loaded gold nanoparticles in hollow and hierarchical structure
  • Preparation method of indium oxide air-sensitive material having loaded gold nanoparticles in hollow and hierarchical structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Weigh a certain amount of indium chloride, L-cysteine ​​and trisodium citrate and dissolve them in deionized water. The concentration of indium chloride is 0.05mol / L, and the concentration of L-cysteine is 0.1mol / L, the concentration of trisodium citrate is 0.05mol / L, and the molar ratio of control indium chloride and L-cysteine ​​is 1:1.5, the mol ratio of indium chloride and trisodium citrate is 1:1;

[0019] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, and conduct a hydrothermal reaction at a temperature of 170°C for 16 hours, 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;

[0020] (3) Place the solid product obtained in step (2) in a drying oven, dry at 60°C for 24 hours, then put it in an alumina crucible and put it in a muffle furnace, an...

Embodiment 2

[0024] (1) Weigh a certain amount of indium chloride, L-cysteine ​​and trisodium citrate and dissolve them in deionized water. The concentration of indium chloride is 0.06mol / L, and the concentration of L-cysteine is 0.15mol / L, the concentration of trisodium citrate is 0.06mol / L, and the molar ratio of control indium chloride and L-cysteine ​​is 1:2, the mol ratio of indium chloride and trisodium citrate is 1:1;

[0025] (2) Move the mixed solution obtained in step (1) to a hydrothermal reaction kettle lined with polytetrafluoroethylene, and conduct a hydrothermal reaction at a temperature of 180°C for 18 hours, 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) Place the solid product obtained in step (2) in a drying oven, dry at 60°C for 24 hours, then put it in an alumina crucible and put it in a muffle furnace, and...

Embodiment 3

[0030] (1) Weigh a certain amount of indium chloride, L-cysteine ​​and trisodium citrate and dissolve them in deionized water. The concentration of indium chloride is 0.067mol / L, and the concentration of L-cysteine is 0.133mol / L, the concentration of trisodium citrate is 0.067mol / L, and the molar ratio of controlling indium chloride and L-cysteine ​​is 1:2, the mol ratio of indium chloride and trisodium citrate is 1:1;

[0031] (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 190°C for 20 hours, 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;

[0032] (3) Place the solid product obtained in step (2) in a drying oven, dry at 60°C for 24 hours, then put it in an alumina crucible and put it in a muffle furnace, ...

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Abstract

The invention provides a preparation method of indium oxide air-sensitive material having loaded gold nanoparticles in a hollow and hierarchical structure.The preparation method concretely comprises following steps: obtaining hollow indium oxide in a hierarchical structure in that indium chloride and L-cysteine as raw material and trisodium citrate as a surface active agent undergo a hydrothermal reaction and are subjected to calcination treatment; and finally obtaining indium oxide air-sensitive material having loaded gold nanoparticles in the hollow and hierarchical structure by using chloroauric acid as raw material, sodium borohydride as a reductant, L-lysine as an additive and loading the surface with precious metal gold nanoparticles. The preparation method of indium oxide air-sensitive material having loaded gold nanoparticles in the hollow and hierarchical structure has a simple production process; and indium oxide air-sensitive material has the hollow and hierarchical structure and is loaded with precious metal gold nanoparticles so that novel air-sensitive material with high sensitivity is acquired.

Description

technical field [0001] The invention relates to a method for preparing a hollow hierarchical indium oxide gas-sensing material loaded with gold nanoparticles, and belongs to the technical field of advanced nano functional material preparation technology. Background technique [0002] Most of the gas-sensing materials used in current gas sensors are metal oxide semiconductor gas-sensing materials. kind of gas. Because the semiconductor metal oxide gas sensor has many advantages such as high sensitivity, fast response recovery time, simple circuit and operation, and low price, it is widely used in various fields such as medical treatment, aviation, home life, and gas emission detection. . In 2 o 3 Is a new type of gas sensitive material, and SnO 2 , ZnO, Fe 2 o 3 Compared with other traditional gas sensing materials, it has the advantages of wider band gap, smaller resistivity and higher catalytic activity. Therefore, it can be loaded with noble metals (oxides) to form...

Claims

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Application Information

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IPC IPC(8): B82B3/00B82Y30/00G01N27/04
Inventor 张苏宋鹏王琦杨中喜闫慧慧
Owner UNIV OF JINAN
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