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Method for modifying electrode by using nanometer copper oxide and method for analyzing nilvadipine by using modified electrode

A technology of nano-copper oxide and modified electrodes, which is applied in the field of nano-materials, can solve the problems of reproducibility and stability, and the cost cannot fully meet the requirements, and achieve the effect of good reproducibility and high stability

Active Publication Date: 2018-01-12
HUNAN INSTITUTE OF ENGINEERING
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Problems solved by technology

These methods cannot fully meet the requirements in terms of reproducibility, stability, cost, etc., so a new analytical method is needed to analyze and detect nilvadipine

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  • Method for modifying electrode by using nanometer copper oxide and method for analyzing nilvadipine by using modified electrode
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  • Method for modifying electrode by using nanometer copper oxide and method for analyzing nilvadipine by using modified electrode

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0033] In this embodiment, the method for modifying the electrode with nano-copper oxide includes three steps of preparing nano-copper oxide, preparing nano-copper oxide suspension, and modifying the glassy carbon electrode.

[0034] The method for preparing nano-copper oxide is as follows: adding PEG (polyethylene glycol) to copper acetate solution to form solution A; adding PEG (polyethylene glycol) to sodium carbonate solution to form solution B after dissolving. Then under the condition of ultrasound, solution B is evenly added dropwise to solution A, and then ultrasound for an appropriate time, and finally magnetically stirred at 78°C for 30 minutes to obtain a black precipitate, which is centrifuged, washed repeatedly, and vacuum After drying, copper oxide nanomaterials with a particle diameter of about 50-70 nm can be obtained. figure 1 It is the e...

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Abstract

The invention discloses a method for modifying an electrode by using nanometer copper oxide. The method comprises the following steps: preparing nanometer copper oxide, preparing a nanometer copper oxide suspension, modifying a glassy carbon electrode and the like. The invention further discloses a method for analyzing nilvadipine by using a modified electrode. The method comprises the following steps: preparing a nilvadipine mother solution, preparing a buffer solution, providing the nanometer copper oxide-modified electrode, adding the nilvadipine solution into the buffer solution, jointly forming a three-electrode system by using the nanometer copper oxide-modified electrode as a working electrode, a platinum electrode as an auxiliary electrode and a calomel electrode as a correspondingreference electrode, and detecting the content of the nilvadipine by a cyclic voltammetry. According to the invention, the nanometer copper oxide-modified electrode is obtained by the method for modifying the glassy carbon electrode by using the nanometer copper oxide, the modified electrode is used for analyzing the nilvadipine, and an analysis result is good in reproducibility and high in stability.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a method for modifying electrodes with nanometer copper oxide and the application of the modified electrodes in nilvadipine analysis. Background technique [0002] Nilvadipine is a yellow crystalline powder that can be dissolved in ethanol but not easily dissolved in water. At present, the main detection methods for nilvadipine are divided into high performance liquid chromatography, ultraviolet spectrophotometry, voltammetry, and nuclear magnetic resonance. These methods cannot fully meet the requirements in terms of reproducibility, stability, cost, etc., so a new analytical method is needed to analyze and detect nilvadipine. Contents of the invention [0003] The invention provides a method for modifying an electrode with nano-copper oxide with good reproducibility and high stability and a method for analyzing nilvadipine with the modified electrode. [0004] To achieve the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 陈立新
Owner HUNAN INSTITUTE OF ENGINEERING
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