Preparation method of gas sensor for volatile organic matter detection

A volatile organic compound and gas sensor technology, applied in the direction of material electrochemical variables, can solve the problems of cumbersome process and low yield, and achieve the effect of improving sensitivity, response speed and stability

Active Publication Date: 2015-12-16
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] At present, most of the synthesis methods are synthesized separately, and then compound the catalyst and the carrier, the process is cumbersome and the yield is not high

Method used

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  • Preparation method of gas sensor for volatile organic matter detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 MoS 2 / AgPd preparation method

[0023] Take 35mL of CTAB solution with a concentration of 0.1mol / L, add 0.01g of AgNO 3 and 2 mL of H at a concentration of 0.03 mol / L 2 PdCl 4 solution, after stirring for 15 minutes, continue to stir and add 2 mL of ascorbic acid solution with a concentration of 0.3 mol / L, 0.5 mL of Na with a concentration of 0.1 mol / L 2 MoO 4 solution and 0.01 g of Na 2 S, after stirring for 15 minutes, put it into the reaction kettle, and react for 14 hours at 180°C; after cooling to room temperature, use deionized water to wash centrifugally, and vacuum dry at 40°C to obtain MoS 2 / AgPd.

Embodiment 2

[0024] Example 2 MoS 2 / AgPd preparation method

[0025] Take 35mL of CTAB solution with a concentration of 0.1mol / L, add 0.02g of AgNO 3 and 4 mL of H at a concentration of 0.03 mol / L 2 PdCl 4 solution, after stirring for 15 minutes, continue to stir and add 4 mL of ascorbic acid solution with a concentration of 0.3 mol / L, 1.0 mL of Na with a concentration of 0.1 mol / L 2 MoO 4 solution and 0.02g Na 2 S, after stirring for 15 minutes, put it into the reaction kettle, and react for 16 hours at 150°C; after cooling to room temperature, use deionized water to wash centrifugally, and vacuum dry at 40°C to obtain MoS 2 / AgPd.

Embodiment 3

[0026] Example 3 MoS 2 / AgPd preparation method

[0027] Take 35mL of CTAB solution with a concentration of 0.1mol / L, add 0.03g of AgNO 3 solution and 6 mL of H at a concentration of 0.03 mol / L 2 PdCl 4 solution, after stirring for 15 minutes, continue to stir and add 6 mL of ascorbic acid solution with a concentration of 0.3 mol / L, 1.5 mL of Na with a concentration of 0.1 mol / L 2 MoO 4 solution and 0.03g Na 2 S, after stirring for 15 minutes, put it into the reaction kettle, and react for 12 hours at 220°C; after cooling to room temperature, use deionized water to wash centrifugally, and vacuum dry at 40°C to obtain MoS 2 / AgPd.

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Abstract

The present invention discloses a preparation method of a gas sensor for volatile organic matter detection. The preparation method specifically comprises: preparing a molybdenum disulfide loaded silver-palladium alloy nanometer composite material by using a one-pot method, and coating the obtained material on a gas sensitive element so as to prepare the aromatic hydrocarbon gas sensor. The prepared gas sensor of the present invention can achieve rapid and sensitive detection on the volatile organic matters.

Description

technical field [0001] The invention discloses a method for preparing a gas sensor, specifically a method for preparing a gas sensor based on a molybdenum disulfide-loaded silver-palladium alloy nanocomposite material. The prepared gas sensor can be applied to the detection of volatile organic compounds and belongs to a new type of nanometer Functional materials and environmental safety monitoring technology field. Background technique [0002] According to the definition of the World Health Organization, volatile organic compounds refer to compounds with a boiling point between 50°C and 250°C, with a saturated vapor pressure exceeding 133.32Pa at room temperature, and a class of organic compounds that exist in the air in the form of vapor at room temperature, mainly including alkanes, Benzene series, organic chloride, etc. The harm of volatile VOC is obvious. When the concentration of volatile organic compounds in the room exceeds a certain concentration, people will feel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
Inventor 张勇杜斌王耀光王欢李娇娇魏琴
Owner UNIV OF JINAN
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