Method for manufacturing carbon nano tube-based electrochemical transducer for simultaneously detecting methyldopa and hydrodiuril

A technology of carbon nanotubes and methyldopa, applied in the field of preparation of new electrodes

Inactive Publication Date: 2013-11-20
WUXI BAILING SENSING TECH
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  • Abstract
  • Description
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Problems solved by technology

Some methods, such as fluorescence spectroscopy and chromatographic analysis, have been used to detect MD, but the simplicity, rapidity, high sensitivity, and no cumbersome pretreatment make electrochemical methods attract great interest from researchers in MD detection.

Method used

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Embodiment Construction

[0012] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with implementation.

[0013] A method for preparing an electrochemical sensor for simultaneous detection of methyldopa and dihydrochlorothiazium based on carbon nanotubes, the steps are as follows:

[0014] (1) Preparation of 5-amino-2'-ethyl-biphenyl alcohol (5AEB): 4.36g (40mmol) 4-aminophenol, 7.40g (40mmol) 1-bromo-2-ethylbenzene and 9.24g Pb ( PPh 3 ) 4 Put into a conical flask and then add 40mL of dimethylacetamide (DMA); place the conical flask in a water condenser; heat at 80°C for at least 14h; the progress of the reaction is monitored by real-time liquid chromatography (TLC) . After the reaction, the resulting mixture was cooled for several minutes to remove Pd(PPh 3 ) 4 . Chloroform was then added to the reaction mixture and filtered to recover the catalyst. The obtained product was recrystallized in isopropanol and chlor...

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Abstract

The invention relates to a manufacturing method for an electrochemical transducer, and particularly relates to the manufacturing method for a novel carbon nano tube-based electrode. Compared with non-modified electrodes, the modified electrode of the transducer prepared by the method has obviously enhanced volt-ampere response of MD (methyldopa) on the surface and is successfully used for simultaneously detecting the MD and HCT (hydrodiuril) for the first time, and the oxidation potential of the MD is below 220mV. The transducer has high stability, high sensitivity, long-term use stability, and remarkable volt-ampere repeatability. The detection result to practical samples shows that the prepared transducer has very good practicability.

Description

Technical field: [0001] The invention relates to the preparation of an electrochemical sensor, in particular to a preparation method of a novel electrode based on carbon nanotubes. Background technique: [0002] Excellent electrical, chemical, and structural properties make carbon nanotubes (CNTs) very popular as a viable nanomaterial in the field of electrochemistry. Carbon nanotubes are classified into multi-walled carbon nanotubes (MWCNTs) and single-walled carbon nanotubes (SWCNTs). These two forms of carbon nanotubes differ greatly in their structural characteristics. Modification of functional functional groups or metal ions on the surface of carbon nanotubes or structure-dependent metallicity enables them to facilitate electron transfer. Carbon nanotubes can be modified in many ways making them ideal candidates for bio-chemical sensor systems. [0003] The simplicity, accuracy, low cost, and rapidity of electrochemical techniques have led to continuous development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/30
Inventor 孙京华潘正海
Owner WUXI BAILING SENSING TECH
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