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Method for preparing ethylene diamine tetraacetic acid (EDTA) modified carbon paste carbon nano tube membrane electrode

A carbon nanotube film and carbon paste electrode technology is applied in the field of preparation of carbon nanotube film electrodes, and can solve the problems of unstable electrode tube decoration layer and difficult control of copper wire propulsion.

Active Publication Date: 2013-02-13
HARBIN NORMAL UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems that the electrode tube modification layer is not fixed and the propulsion amount of the copper wire is not easy to control in the existing method for preparing carbon nanotube membrane electrodes, thereby providing an EDTA-modified carbon nanotube membrane electrode with carbon paste Preparation

Method used

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  • Method for preparing ethylene diamine tetraacetic acid (EDTA) modified carbon paste carbon nano tube membrane electrode
  • Method for preparing ethylene diamine tetraacetic acid (EDTA) modified carbon paste carbon nano tube membrane electrode

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specific Embodiment approach 1

[0018] Specific embodiment one: the preparation method of a kind of EDTA modified carbon paste carbon nanotube film electrode in the present embodiment is carried out according to the following steps:

[0019] 1. Preparation of the electrode tube: Take an insulating tube with an inner diameter of 2-4 mm and a length of 4-5 cm as the electrode shell, clean it by ultrasonic waves, and insert a diameter of 1-3 mm and a length of 5 cm into one end of the electrode shell nozzle. ~7cm copper wire, so that 1~2cm copper wire is exposed outside the electrode shell as a lead wire, and then inserted into the copper wire insertion end of the electrode shell with an inner diameter of 1-3mm, an outer diameter of 2-4mm, and a length of 3-4cm The polytetrafluoroethylene tube, so that the polytetrafluoroethylene tube is exposed by 1.5 ~ 2cm, and the surface of the exposed polytetrafluoroethylene tube is marked with a scale along the direction of the tube length;

[0020] 2. Preparation of EDTA...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the insulating tube is a glass tube, a polytetrafluoroethylene tube or a plastic tube. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, the inner diameter of the electrode tube is 3 mm, and the length is 5 cm. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a method for preparing an ethylene diamine tetraacetic acid (EDTA) modified carbon paste carbon nano tube membrane electrode, relates to a method for preparing a carbon nano tube membrane electrode, and aims to solve the technical problems that in the conventional method for preparing the carbon nano tube membrane electrode, the modifying layer of the electrode tube is not fixed, and the advancing amount of the copper wires is difficult to control. The method comprises the following steps of: 1, preparation of an electrode tube; 2, preparation of an EDTA modified carbon paste electrode: grinding graphite powder and EDTA in a mortar, adding a hydrophobic adhesive, uniformly stirring the mixture to obtain the carbon paste, and filling the carbon paste in an electrode tube shell by extrusion; and 3, preparation of an EDTA modified carbon paste carbon nano tube membrane electrode. According to the method, the EDTA modified carbon paste carbon nano tube membrane electrode has high anti-interference capability and high electrode stability, and is quite suitable for analyzing and monitoring copper ions in water-steam systems of thermal equipment of power plants, refinery plants and chemical enterprises, and moreover, the advancing amount of the copper wires can be accurately controlled.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube film electrode. Background technique [0002] Copper (Cu) is one of the indispensable trace elements for human health. It mainly participates in the process of hematopoiesis, promotes the formation of red blood cells together with iron ions, and participates in the catalytic synthesis of many enzymes in the human body. If copper deficiency can cause anemia or osteoporosis, However, excessive intake of copper can cause damage to cells and lead to brain disorders and other diseases. Therefore, the precise determination of copper ions in food or the human body, and the testing of drinking water in the residential environment are of great significance in reflecting the health of a person and evaluating environmental safety. At the same time, the analysis of copper ions in the steam water system of power plant equipment can reduce the corrosion inside the steam water system. Therefore, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 朱春城伍华段景峰
Owner HARBIN NORMAL UNIVERSITY
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