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FeCo reticular structure nano material constructed by nanowires and preparation method and application of FeCo reticular structure nano material

A network structure, nanomaterial technology, applied in the analysis of materials, material electrochemical variables, material analysis by electromagnetic means, etc., can solve the problems of high cost, complex preparation, high energy consumption, and achieve low cost, high sensitivity, Strong anti-interference effect

Active Publication Date: 2020-06-12
HENGYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The primary technical problem to be solved by the present invention is, in order to overcome the existence of complex preparation, high cost and To solve the problem of high energy consumption, provide a method for preparing FeCo network structure nanomaterials with simple preparation and low price

Method used

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  • FeCo reticular structure nano material constructed by nanowires and preparation method and application of FeCo reticular structure nano material
  • FeCo reticular structure nano material constructed by nanowires and preparation method and application of FeCo reticular structure nano material
  • FeCo reticular structure nano material constructed by nanowires and preparation method and application of FeCo reticular structure nano material

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Experimental program
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Embodiment 1

[0038] Preparation of FeCo network structure nanomaterials constructed by embodiment 1 nanowires

[0039] Add 0.016g of potassium ferricyanide and 0.023g of cobalt chloride hexahydrate into a mixed solution consisting of 5mL of water and 12.5mL of ethylenediamine, and dissolve after magnetic stirring for 1 minute;

[0040] Transfer the dissolved mixed solution to a polytetrafluoroethylene stainless steel reaction kettle, conduct a hydrothermal reaction at 80°C for 24 hours, centrifuge after natural cooling, wash with water and ethanol for several times, and dry under vacuum at 60°C FeCo network structure nanomaterials constructed by nanowires were obtained.

[0041] In order to illustrate the application performance of the FeCo network nanomaterials constructed by the nanowires prepared in the present invention, four other FeCo materials with different shapes were synthesized by a similar synthesis method for comparison of application performance. The shapes of the four materi...

Embodiment 2

[0058] Example 2 Preparation of FeCo Network Structure Nanomaterial Modified Electrode Constructed by Nanowires

[0059] (1) Take a glassy carbon electrode with a diameter of 3 mm, wash the glassy carbon electrode with clear water, and in the presence of an appropriate amount of Al with a particle size of 0.05 μm 2 o 3 The powder is ground in the way of drawing 8, polished 60 times, washed with deionized water, then ultrasonically washed with dilute nitric acid, acetone and deionized water, and dried under infrared light to obtain the pretreated glassy carbon electrode;

[0060] (2) Take 1.2 mg of the FeCo network structure nanomaterial constructed by the nanowires described in Example 1 and disperse it in 1 mL of N,N-dimethylformamide solvent for 20 minutes by ultrasonic to obtain an electrode material modification solution;

[0061] (3) Take 3 μL of the electrode material dispersion liquid and apply it on the surface of the pretreated glassy carbon electrode, and after dry...

Embodiment 3

[0063] The detection performance of the FeCo network nanomaterial modified electrode constructed by the embodiment 3 nanowires

[0064] In this example, each modified electrode prepared in Example 2 was used as the experimental object, and a three-electrode system was formed with a platinum auxiliary electrode and a saturated calomel reference electrode, and the electrochemical performance was performed by connecting to an electrochemical workstation (Shanghai Chenhua CHI660D). detection.

[0065] (1) Comparison of electrocatalytic reduction performance of different electrodes for hydrogen peroxide

[0066] In order to more intuitively reflect the electrocatalytic reduction performance of the FeCo network structure nanomaterial modified electrode constructed by the nanowires prepared by the present invention to hydrogen peroxide, each modified electrode was placed in the blank bottom solution (a) and the solution containing 8mmol / In L hydrogen peroxide bottom solution (b) me...

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Abstract

The invention relates to the technical field of material preparation and electrochemical detection, and particularly discloses a FeCo reticular structure nano material constructed by nanowires and apreparation method and application of the FeCo reticular structure nano material. The preparation method of the FeCo reticular structure nano material constructed by the nanowires comprises the following steps: (1) adding 0.014-0.18 g of potassium ferricyanide and 0.020-0.025 g of cobalt chloride hexahydrate into a mixed solution composed of 4-6 mL of water and 10-15 mL of ethylenediamine, and dissolving to obtain a mixed solution; and (2) carrying out hydrothermal reaction on the mixed solution at 75-85 DEG C for 20-30 hours, and separating the product to obtain the FeCo reticular structure nano material constructed by the nanowires. A modified electrode prepared from the FeCo reticular structure nano material constructed by the nanowires provided by the invention has high sensitivity andselectivity and a wide detection range for detection of hydrogen peroxide.

Description

technical field [0001] The invention relates to the technical field of material preparation and electrochemical detection, in particular to a FeCo network structure nanomaterial constructed of nanowires and a preparation method and application thereof. Background technique [0002] Hydrogen peroxide, its aqueous solution is also known as hydrogen peroxide, and its molecular formula is H 2 o 2 , Generally used for surface disinfection and sterilization. h 2 o 2 In the chemical industry, it is a good oxidizing agent, bleaching agent and neutralizing agent, and is widely used in the fields of textile, papermaking and sewage treatment. In vivo, H 2 o 2 As one of the important biological small molecules, the change of its content plays a huge role in the life process and various biochemical reactions, such as the transmission of life signals, gene expression and cell metabolism. At the same time, H 2 o 2 It is a representative of active oxygen and is also a by-product of...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/327
CPCG01N27/308G01N27/327
Inventor 李俊华高希雅刘兴盛良兵崔莺贺灵芝
Owner HENGYANG NORMAL UNIV
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