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Isopropanol gas sensor based on NiCoxFe2-xO4 nano cube material and preparation method of sensor

A technology of nicoxfe2-xo4 and nano-cubes, which is applied in the direction of analyzing materials, material resistance, and material analysis through electromagnetic means, can solve problems such as easy loss of consciousness or death, easy diffusion, etc., and is suitable for mass production, increasing oxygen Adsorption, good selectivity effect

Active Publication Date: 2019-11-05
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Isopropanol decomposes at high temperature to produce toxic gas, which is easy to diffuse. When people and animals are exposed to a large amount of isopropanol, they are prone to lose consciousness or die

Method used

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  • Isopropanol gas sensor based on NiCoxFe2-xO4 nano cube material and preparation method of sensor
  • Isopropanol gas sensor based on NiCoxFe2-xO4 nano cube material and preparation method of sensor
  • Isopropanol gas sensor based on NiCoxFe2-xO4 nano cube material and preparation method of sensor

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Embodiment 1～4

[0037] 1. Treatment of Pd metal interdigitated electrodes

[0038] First, wipe the Al with Pd metal interdigitated electrodes prepared by screen printing technology with acetone and ethanol cotton balls respectively. 2 o 3 The substrate is clean, and then the Al with Pd metal interdigitated electrodes 2 o 3 The substrate was placed in acetone, ethanol and deionized water in sequence, ultrasonically cleaned for 10 minutes respectively, and finally dried at 100°C for later use.

[0039] Among them, the Pd metal interdigitated electrode is printed on Al by screen printing technology. 2 o 3 Preparation on the substrate, the specific method is as follows: According to the mass ratio of ink [Jiahua JX07500487]: Pd powder: diluent is 1:1:2, stir to make a paste; then inject the paste into the On the screen plate of the electrode pattern, scrape the paste under the conditions of an inclination angle of 30° and a pressure of 5 Newtons, print the electrode and dry it, and complete ...

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Abstract

The invention relates to an isopropanol gas sensor based on a NiCoxFe2-xO4 (x=0.01-0.1) nano cube material prepared through a metal organic framework template and a preparation method of the sensor and belongs to the technical field of gas sensors. The sensor is composed of a Al2O3 substrate with a PD metal interdigital electrode and a NiCoxFe2-xO4 nano cube material sensitive layer prepared by adopting a coating technology on the PD metal interdigital electrode and the Al2O3 substrate from bottom to top in sequence, and the grain size of a nano cube is 50-80 nanometers. When the cube is dopedwith trace cobalt, due to the radius difference of cobalt atoms and iron atoms, the lattice defects are possibly caused, the defects are beneficial to generation of oxygen vacancies, oxygen absorption is enhanced accordingly, and the gas sensitive response is improved. The technology is simple, and the prepared sensor is small in size and suitable for large-batch production and has important application value.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, and in particular relates to a NiCo sensor prepared based on a metal-organic framework template method. x Fe 2-x o 4 (x=0.01-0.1) nano-cube material isopropanol gas sensor and its preparation method. The sensor has high selectivity for isopropanol. Background technique [0002] With the rapid development of industry and technology, while the material wealth is extremely rich, the problems of production safety and environment are becoming increasingly prominent. People have more and more opportunities to be exposed to dangerous gases, and health problems caused by volatile organic compounds have also become the focus of our attention, such as natural gas with methane and carbon monoxide as the main components, organic volatile gases released from decoration materials Toxic gases formaldehyde, benzene, xylene, sulfur dioxide and nitrogen oxides in coal combustion, vehicle exhaust, etc. Onc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/126G01N27/127
Inventor 阮圣平韩静刘彩霞周敬然温善鹏李昕张楠尹延洋
Owner JILIN UNIV
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