Method for simultaneously detecting three isomers of benzenediol on basis of sensor of thionine functionalized carbon nanotube

A technology of isomers and carbon nanotubes, which is applied in the field of carbon nanotube sensors, can solve the problems of large consumption of reagents, high processing requirements, expensive instruments, etc., and achieves less sample consumption, simple detection process and low cost. Effect

Inactive Publication Date: 2013-08-21
NORTHWEST NORMAL UNIVERSITY
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But its disadvantage is that it is easy to agglomerate in water and most organic solvents
Although there are some methods for the simultaneous quantitative determination of quinone isomers, such as chromatography and spectrometry, due to the...

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  • Method for simultaneously detecting three isomers of benzenediol on basis of sensor of thionine functionalized carbon nanotube
  • Method for simultaneously detecting three isomers of benzenediol on basis of sensor of thionine functionalized carbon nanotube
  • Method for simultaneously detecting three isomers of benzenediol on basis of sensor of thionine functionalized carbon nanotube

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[0026] In order to illustrate the content of the present invention more clearly, the present invention will be described in detail below in conjunction with the accompanying drawings and specific experimental procedures. The water used in the implementation of the present invention is twice distilled water, and the reagents are analytically pure;

[0027] Use instrument and reagent in the implementation process of the present invention:

[0028] CHI 660c electrochemical workstation (Shanghai Chenhua Instrument Co., Ltd.) was used for cyclic voltammetry experiments, and a quartz tube heating automatic double pure water still (1810B, Shanghai Asia Pacific Technology Glass Co., Ltd.) was used for distilling double distilled water. Electronic balance (Shanghai Liangping Instrument Co., Ltd.), used for weighing medicines. Ultrasonic cleaner (Kunshan Ultrasonic Instrument Co., Ltd.). Aluminum oxide grinding powder (0.30 mu m, 0.05 mu m, Shanghai Chenhua Instrument Reagent Co., L...

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Abstract

The invention discloses a method for simultaneously detecting three isomers of benzenediol on basis of a sensor of a thionine functionalized carbon nanotube. The method comprises the following steps of: carrying out chemical reaction on a carboxylated multiwalled carbon nanotube and thionine with amino to form an amidated carbon nanotube, and modifying the amidated carbon nanotube on a glassy carbon electrode to form a modification layer so as to simultaneously detecting the three isomers of the benzenediol. Researches show that by modifying the electrode through the multiwalled carbon nanotube/thionine, the electrochemical response of the isomers of the benzenediol is greatly increased, and a feasible method is provided for simultaneously detecting the three isomers of the benzenediol.

Description

[0001] technical field [0002] The invention relates to a sensor based on thionine functionalized carbon nanotubes for simultaneously detecting three isomers of quinone. Background technique [0003] Due to their large specific surface area, ultra-lightweight and high mechanical toughness, adsorption performance, electrical properties, thermal stability and other properties, carbon nanotubes have become a hot research topic in the fields of physics, chemistry, materials and biology. The unique atomic structure of carbon nanotubes makes them exhibit metal or semiconductor properties. Using this unique electronic property, carbon nanotubes can be used as modified electrodes. But its disadvantage is that it is easy to agglomerate in water and most organic solvents. [0004] Thionine is a biological dye, which can be used as an electron transfer medium in enzyme-based electrochemical sensors. It has good water solubility and electrical conductivity. The water solubility of th...

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Application Information

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IPC IPC(8): G01N27/48G01N27/30B82Y15/00
Inventor 刘秀辉刘元香李晓艳郑李纯
Owner NORTHWEST NORMAL UNIVERSITY
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