Preparation method and application of a rod-shaped zinc oxide gas-sensitive material

A gas-sensitive material, zinc oxide technology, applied in zinc oxide/zinc hydroxide, material resistance, analytical materials, etc., can solve the problems of cumbersome operation, time-consuming, unfavorable real-time monitoring by regulatory authorities, etc., to achieve simple and time-consuming operation. short, the effect of preventing illegal drugs from entering the market

Active Publication Date: 2020-06-23
HEILONGJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the existing problems of sample pretreatment, cumbersome operation, long time consumption, and unfavorable real-time monitoring by regulatory authorities in the detection process of drug analogues and drugs of abuse. Preparation method and application of zinc oxide gas sensitive material

Method used

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  • Preparation method and application of a rod-shaped zinc oxide gas-sensitive material
  • Preparation method and application of a rod-shaped zinc oxide gas-sensitive material
  • Preparation method and application of a rod-shaped zinc oxide gas-sensitive material

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specific Embodiment approach 1

[0025] Specific embodiment one: the preparation method of a kind of rod-shaped zinc oxide gas-sensitive material in this embodiment is carried out according to the following steps:

[0026] 1. After mixing urea and zinc acetylacetonate in a molar ratio of 2 to 6:1, dissolve it in a mixed solvent with a volume ratio of water and methanol of 1 to 10:1, so that the concentration of zinc acetylacetonate solution is 0.01 to 0.12 mol / L, magnetic stirring to obtain a clear solution, transfer the solution to a hydrothermal reaction kettle, and react at 120-220°C for 2-20 hours to obtain a white precursor;

[0027] 2. Centrifuge the precursor obtained in step 1, wash it with deionized water and absolute ethanol respectively, dry it at 60-120°C for 6-24h, and then heat-treat it in air at 500-600°C for 2-4h , to obtain white ZnO nanorod bundle powder.

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that in step 1, urea and zinc acetylacetonate are mixed in a molar ratio of 3:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the volume ratio of water and methanol in the mixed solvent described in step 1 is 5:1. Others are the same as those in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a rod-bundle-shaped zinc-oxide gas-sensitive material and application thereof and relates to the rod-bundle-shaped zinc-oxide gas-sensitive material fordetecting narcotic analogues. The invention aims at solving the problems of necessary sample pretreatment, tedious operation, longer consumed time and inconvenience in real-time monitoring of supervision departments in the existing process for detection of the narcotic analogues and abused drugs. The rod-bundle-shaped zinc-oxide gas-sensitive material is prepared by the following steps of: mixingurea and zinc acetylacetonate, dissolving in a mixed solvent, transferring into a hydrothermal reaction kettle, and reacting to obtain a precursor; (2) centrifugally separating the precursor, respectively using deionized water and absolute ethyl alcohol to wash, drying, then carrying out heat treatment to obtain the rod-bundle-shaped zinc-oxide gas-sensitive material. The rod-bundle-shaped zinc-oxide gas-sensitive material is used for preparing a gas-sensitive element to detect the narcotic analogues. The method for detecting the narcotic analogues and the abused drugs is simple in operation,shorter in consumed time and convenient in real-time monitoring of the supervision departments. The invention belongs to the field of detection of the narcotic analogues.

Description

technical field [0001] The invention relates to a rod-shaped zinc oxide gas-sensitive material for detecting drug analogues. Background technique [0002] The abuse of controlled drugs has become the focus of attention all over the world. A small amount of stimulant drugs taken by organisms will have a great impact on the central nervous system, which can cause symptoms such as increased blood pressure, increased heart rate, insomnia, and memory loss in a short period of time. , Excessive use can also produce dependence and cause drug addiction, so taking drugs has caused serious harm to human health and social security. Therefore, real-time monitoring of drugs of abuse has become a top priority. At present, there are many reports on the detection and research of drugs and their analogues, but almost all of them use instrumental analysis methods. For example: high performance liquid chromatography, gas chromatography-mass spectrometry, gas chromatography, capillary electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y40/00G01N27/12
CPCB82Y40/00C01G9/02C01P2002/72C01P2004/03C01P2004/16G01N27/125G01N27/127
Inventor 霍丽华高蕊徐英明程晓丽张现发
Owner HEILONGJIANG UNIV
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