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Zr-doped mesoporous oxide indium nitrogen dioxide sensor based on pore passage order and preparation method thereof

A nitrogen dioxide and indium oxide technology is applied in the field of mesoporous indium oxide nitrogen dioxide gas sensor and its preparation, which can solve the problems of complex equipment, low detection limit, etc. Effect

Inactive Publication Date: 2016-08-17
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods have the characteristics of low detection limit and high sensitivity, but because they often require complex and expensive equipment, they are not suitable for real-time and continuous detection of ambient gases, so people hope to use gas sensors to detect NO 2 to test

Method used

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  • Zr-doped mesoporous oxide indium nitrogen dioxide sensor based on pore passage order and preparation method thereof
  • Zr-doped mesoporous oxide indium nitrogen dioxide sensor based on pore passage order and preparation method thereof
  • Zr-doped mesoporous oxide indium nitrogen dioxide sensor based on pore passage order and preparation method thereof

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Embodiment 1

[0037] 1. Preparation of Zr-doped mesoporous indium oxide with ordered channels

[0038] ⑴ Add 1.72g of In(NO 3 ) 3 4.5H 2 O and 0.0172g of Zr(NO 3 ) 4 5H 2 O was added to 10 mL of absolute ethanol and kept stirring until it was completely dissolved;

[0039] (2) Add 0.5g of SBA-15 to the solution in step (1) and transfer to a water bath with a temperature of 40°C for water bath treatment until the absolute ethanol solvent in the solution evaporates completely; dry the obtained solid powder at 60°C Dry and sinter in a muffle furnace at 300°C for 3 hours, the mass of the sintered product is about 1.3g;

[0040] (3) Add 0.86g of In(NO 3 ) 3 4.5H 2 O and 0.0086g of Zr(NO 3 ) 4 5H 2 O was added to 10 mL of absolute ethanol and kept stirring until it was completely dissolved;

[0041] (4) Add all the sintered products obtained in step (2) to the solution of step (3) as a template (about 1.3g), and transfer to a water bath with a temperature of 40°C for water bath t...

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Abstract

The invention discloses a Zr-doped mesoporous oxide indium nitrogen dioxide sensor based on a pore passage order and a preparation method thereof, and belongs to the technical field of semiconductor oxide gas sensors. The sensor is composed of an Al2O3 insulating ceramic pipe 2, a nickel-cadmium alloy coil 1 and sensitive material thin films 4, wherein the outer surface of the Al2O3 insulating ceramic pipe 2 is provided with two independent annular gold electrodes 3, the nickel-cadmium alloy coil 1 penetrates through the Al2O3 insulating ceramic pipe 2, and the outer surface of the Al2O3 insulating ceramic pipe 2 and the annular gold electrodes 3 are coated with the sensitive material thin films 4. Each annular gold electrode 3 is connected with a pair of platinum wires 5. The sensitive material thin films 4 are obtained by coating Zr-doped mesoporous oxide indium with the pore passage order. The Zr-doped mesoporous oxide indium material with the pore passage order can provide large specific surface area and can easily provide more active sites; by means of Zr-doped oxide indium, the electron concentration is increased, the proportion of adsorbed oxygen is increased, sensitivity can be easily improved, and the sensor has wide application prospects on the aspect of detecting the content of nitrogen dioxide in the microenvironment.

Description

technical field [0001] The invention belongs to the technical field of semiconductor oxide gas sensors, and in particular relates to a Zr-doped mesoporous indium oxide nitrogen dioxide gas sensor based on ordered pores and a preparation method thereof. Background technique [0002] NO 2 It is a gas with a pungent smell, which is seriously harmful and a double killer of the natural environment and human health. NO in the air 2 Combines with water vapor to form small droplets of nitric acid, which fall to the ground as rain to form acid rain. Acid rain is very harmful. It will change the pH value of the soil, hinder the growth of crops, cause agricultural production to decrease or even fail; it will destroy forest vegetation and cause tree death; it will corrode buildings and industrial equipment and shorten its service life; it will pollute water sources and cause water pollution. The pH drops, causing significant harm to fisheries and threatening the safety of drinking wa...

Claims

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Application Information

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IPC IPC(8): G01N27/12
CPCG01N27/125
Inventor 卢革宇杨秋月高原孙鹏梁喜双揣晓红孙彦峰刘凤敏
Owner JILIN UNIV
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