Methane gas sensor prepared by loading palladium with tin mud in tin plating process and preparation method of methane gas sensor

A methane gas and sensor technology, applied in the direction of material electrochemical variables, etc., can solve problems such as waste of tin sludge, and achieve good response-recovery characteristics, high sensitivity, and enhanced stability.

Active Publication Date: 2018-10-16
NORTHEASTERN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For existing nano SnO 2 Problems existing in the preparation process, and the waste of tin mud in the tin plating process, etc., the present invention proposes a technology for comprehensive utilization of tin mud

Method used

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  • Methane gas sensor prepared by loading palladium with tin mud in tin plating process and preparation method of methane gas sensor
  • Methane gas sensor prepared by loading palladium with tin mud in tin plating process and preparation method of methane gas sensor
  • Methane gas sensor prepared by loading palladium with tin mud in tin plating process and preparation method of methane gas sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Preparation of methane gas sensor with palladium supported on tin mud

[0032] Take 5g of washed and dried tin sludge in a ball mill jar, add 8g of polyethylene glycol 400 and 2g of polyvinyl alcohol for mechanical ball milling, and keep the mixture obtained from ball milling in an autoclave at 160°C for 4 hours, then cool it out And sintering in the air at 500° C. for 3 hours to obtain a porous nano-solid modified by tin mud. 0.1g of PdCl 2 Dissolve in a mixed solution of 10ml deionized water and absolute ethanol, add 1g of porous nano-solid, and 10mg of antimony trioxide, stir evenly for 3h, then heat-treat in air at 450°C for 2h to obtain PdCl 2 Loaded porous nano-solid gas-sensing material. PdCl 2 The loaded porous nano-solid material is mixed with deionized water at a mass ratio of 2:1, ground to form a slurry and uniformly coated on a ceramic substrate, and then dried naturally for electrode welding to obtain a methane gas sensor.

Embodiment 2

[0033] Example 2 Preparation of methane gas sensor with palladium supported on tin mud

[0034] Take 5g of washed and dried tin sludge in a ball mill jar, add 8g of polyethylene glycol 400 and 2g of polyvinyl alcohol for mechanical ball milling, keep the mixture obtained by ball milling in an autoclave at a constant temperature of 180°C for 4 hours, then cool it out And sintering in the air at 500° C. for 3 hours to obtain a porous nano-solid modified by tin mud. 0.1g of PdCl 2 Dissolve in a mixed solution of 10ml deionized water and absolute ethanol, add 1g of porous nano-solid, and 10mg of antimony trioxide, stir evenly for 3h, then heat-treat in air at 450°C for 2h to obtain PdCl 2 Loaded porous nano-solid gas-sensing material. PdCl 2 The loaded porous nano-solid material is mixed with deionized water at a mass ratio of 2:1, ground to form a slurry and uniformly coated on a ceramic substrate, and then dried naturally for electrode welding to obtain a methane gas sensor. ...

Embodiment 3

[0035] Example 3 Preparation of methane gas sensor with palladium supported on tin mud

[0036]Take 5g of washed and dried tin sludge in a ball mill jar, add 8g of polyethylene glycol 400 and 2g of polyvinyl alcohol for mechanical ball milling, keep the mixture obtained by ball milling in an autoclave at 200°C for 4 hours, then cool it out And sintering in the air at 500° C. for 3 hours to obtain a porous nano-solid modified by tin mud. 0.1g of PdCl 2 Dissolve in a mixed solution of 10ml deionized water and absolute ethanol, add 1g of porous nano-solid, and 10mg of antimony trioxide, stir evenly for 3h, then heat-treat in air at 450°C for 2h to obtain PdCl 2 Loaded porous nano-solid gas-sensing material. PdCl 2 The loaded porous nano-solid material is mixed with deionized water at a mass ratio of 2:1, ground to form a slurry and uniformly coated on a ceramic substrate, and then dried naturally for electrode welding to obtain a methane gas sensor.

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Abstract

The invention discloses a methane gas sensor prepared by loading palladium with tin mud in a tin plating process and a preparation method of the methane gas sensor, and belongs to the technical fieldsof semiconductor gas sensors and environment monitoring. For solving the waste problem of tin mud produced in the tin plating process, a methane sensitive material is prepared by carrying out modification treatment such as washing, drilling holes and sintering on the tin mud and carrying out metal palladium loading on the basis. The prepared gas sensor shows higher sensitivity and better responseand recovery characteristics when detecting CH4 gas. The technology for preparing the material and the gas sensor adopted by the invention have the advantages of simple technology, low raw material cost, short preparation period and the like; the technology can be used for industrialized mass production. Meanwhile, comprehensive utilization of resources is realized in aspect of raw material resources. Therefore, the sensor has a broad application prospect in detection aspect of methane gas.

Description

technical field [0001] The invention belongs to the technical field of semiconductor oxide gas sensors and environmental monitoring, and in particular relates to a methane gas sensor based on tin mud modification in a tin plating process and loaded with palladium and a preparation method thereof. Background technique [0002] Methane is a colorless, odorless, flammable and explosive gas, and its explosion limit in air is 5% to 15% (volume fraction). Methane is the main component of biogas, natural gas and combustible ice, and is widely used for energy supply in life and industry. But methane is also one of the main gases that cause the greenhouse effect, and with the popularity of methane in people's lives, there are more and more safety accidents caused by its leakage. Therefore, accurate and rapid real-time monitoring and early warning of methane are very important to reduce the safety accidents caused by it. The types of sensors currently used for methane gas detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
CPCG01N27/30
Inventor 李建中徐浩元付玉尹远洪
Owner NORTHEASTERN UNIV
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