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Organic-inorganic doped micron material and gas-sensitive sensor for detecting trimethylamine

A technology of gas sensor and trimethylamine, which is applied in the direction of analyzing materials, material resistance, and material analysis through electromagnetic means, can solve the problems of limiting practical application, high power consumption, high working temperature, etc., and achieve excellent gas sensing performance and low cost Inexpensive, good stability

Inactive Publication Date: 2018-11-30
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the materials commonly used to test organic vapors are inorganic substances, and a large number of studies have shown that the disadvantages of most metal oxide semiconductor material sensors are high operating temperature, generally at 300-600°C, high power consumption, and high cost. It greatly limits its practical application; and commonly used organic semiconductor materials mainly include phthalocyanines, porphyrins, peryleneimides, etc., especially perylene tetracarboxylic diimide (PDI) compounds have a large co- The yoke system has strong π-π interactions inside the molecule and between the macrocycles, so it has good thermal stability, chemical stability and unique photoelectric properties, and this type of derivative is a typical n-type Semiconductor materials have the advantages of fast response and recovery speed, can work at room temperature or close to room temperature, low cost and easy to industrialize, and are widely used in many fields such as gas sensors, organic light-emitting diodes, dyeing lasers, optical switches and other optoelectronic devices

Method used

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  • Organic-inorganic doped micron material and gas-sensitive sensor for detecting trimethylamine
  • Organic-inorganic doped micron material and gas-sensitive sensor for detecting trimethylamine
  • Organic-inorganic doped micron material and gas-sensitive sensor for detecting trimethylamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 The preparation method of organic and inorganic doped semiconductor microribbon TC-PDI / CdS

[0042] (1) Add 50mg of N-hexyl-N'-(amino-1-ethanol)-1,6,7,12-tetrachloro-3,4:9,10-perylenediimide TC-PDI to In a 50mL volumetric flask, add chloroform to the mark to make a 1mg / mL TC-PDI chloroform solution;

[0043] (2) Take 10mL of the TC-PDI chloroform solution prepared in step 1 and slowly add it dropwise into a 50mL jar (cleaned and dried), and slowly inject 30mL of saturated CdCl along the bottle wall. 2 methanol solution (the volume ratio of chloroform and methanol is 1:3), cover the jar with a bottle cap, and let it stand for 4 days to obtain the organic-inorganic doped micron material TC-PDI / Cd 2+ ;

[0044] (3) The organic and inorganic doped micron material TC-PDI / Cd 2+ Transfer to an Erlenmeyer flask filled with methanol, and pass H into it 2 S gas 7 hours, you can get organic and inorganic doped micro-belt TC-PDI / CdS.

Embodiment 2

[0045] Embodiment 2 The preparation method of organic and inorganic doped semiconductor microribbons TC-PDI / CdS

[0046] (1) Add 50mg of N-hexyl-N'-(amino-1-ethanol)-1,6,7,12-tetrachloro-3,4:9,10-perylenediimide TC-PDI to In a 50mL volumetric flask, add chloroform to the mark to make a 1mg / mL TC-PDI chloroform solution;

[0047] (2) Take 10mL of the TC-PDI chloroform solution prepared in step 1 and slowly add it dropwise into a 50mL jar (cleaned and dried), and slowly inject 30mL of saturated CdCl along the bottle wall. 2 methanol solution (the volume ratio of chloroform and methanol is 1:5), cover the jar with a bottle cap, and let it stand for 4 days to obtain the organic-inorganic doped micron material TC-PDI / Cd 2+ ;

[0048] (3) The organic and inorganic doped micron material TC-PDI / Cd 2+ Transfer to an Erlenmeyer flask filled with methanol, and pass H into it 2 S gas 7 hours, you can get organic and inorganic doped micro-belt TC-PDI / CdS.

Embodiment 3

[0049] Embodiment 3 The preparation method of organic and inorganic doped semiconductor microribbons TC-PDI / CdS

[0050] (1) Add 100mg N-hexyl-N'-(amino-1-ethanol)-1,6,7,12-tetrachloro-3,4:9,10-perylenediimide TC-PDI to In a 50mL volumetric flask, add chloroform to the mark to make a 2mg / mL TC-PDI chloroform solution;

[0051] (2) Take 20mL of the TC-PDI chloroform solution prepared in step 1 and slowly add it dropwise into a 100mL jar (cleaned and dried), and slowly inject 60mL of saturated CdCl along the bottle wall. 2 methanol solution (the volume ratio of chloroform and methanol is 1:3), cover the jar with a bottle cap, and let it stand for 4 days to obtain the organic-inorganic doped micron material TC-PDI / Cd 2+ ;

[0052] (3) The organic and inorganic doped micron material TC-PDI / Cd 2+ Transfer to an Erlenmeyer flask filled with methanol, and pass H into it 2 S gas 7 hours, you can get organic and inorganic doped micro-belt TC-PDI / CdS.

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Abstract

The invention belongs to the field of organic-inorganic doped micron materials, relates to an organic-inorganic doped micron material, and a preparation method and use thereof, and also relates to a trimethylamine gas-sensitive sensor comprising the organic-inorganic doped micron material. A method for preparing the organic-inorganic doped micron material through a phase-transfer method is provided. A gas-sensitive material is uniformly dispersed onto an ITO conductive glass interdigital electrode, so that a trimethylamine gas-sensitive sensor is prepared. The sensor having excellent gas-sensitive property is obtained in the invention, and has the advantages of being good in responsiveness, high in sensitivity, rapid in response and recovery time, good in reproducibility and high in selectivity on trimethylamine in different concentrations; and furthermore, the sensor is simple to prepare, low in production cost, green and environment-friendly, and can be used for detecting low-concentration trimethylamine in an environment and the fish freshness.

Description

technical field [0001] The invention relates to an organic and inorganic doped micron material and a gas sensor for detecting trimethylamine, and belongs to the technical field of organic and inorganic doped micron material. Background technique [0002] With the improvement of people's living standards, as one of the indispensable sources of protein, fat and fat-soluble vitamins with biological value, fish products are popular all over the country. However, eating spoiled fish products can lead to serious health problems such as sepsis and ailments such as gastroenteritis. Therefore, it is very necessary to test the freshness of fish products in the food industry. Trimethylamine is a gaseous organic amine mainly produced in spoiled dead fish. Since its concentration increases with the degree of deterioration of fish products, trimethylamine is considered to be one of the effective indicators for evaluating the freshness of fish products. In the evaluation system of fish ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/125
Inventor 李珊珊朱沛华王榆成
Owner UNIV OF JINAN
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