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Preparation method of copper-copper oxide composite electrode

A composite electrode, copper oxide technology, applied in the direction of electrochemical variables of materials, can solve the problems of complex and complicated preparation process, unsatisfactory detection performance, etc., and achieve the effects of low synthesis cost, simple operation, and fully efficient electrocatalytic reaction.

Inactive Publication Date: 2012-10-03
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Up to now, although there are many methods of making copper electrodes, they are generally complicated.
Chinese patent 200910146910.X provides a manufacturing method of copper electrode structure; Chinese patent CN200710029108.3 discloses a copper electrode slurry and its manufacturing method; Chinese patent CN01216465.8 provides a new copper / copper sulfate electrode synthesis method ; Chinese patent 200910050292.9 provides a method for forming a white assembled corrosion-inhibiting film on the surface of copper electrodes, etc., all related copper electrode preparations are only processing on bulk materials, and do not involve the field of nanotechnology, and the detection performance is far from satisfactory Due to actual needs, and its preparation process is more complicated

Method used

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  • Preparation method of copper-copper oxide composite electrode
  • Preparation method of copper-copper oxide composite electrode
  • Preparation method of copper-copper oxide composite electrode

Examples

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Effect test

Embodiment 1

[0039] Under room temperature and magnetic stirring conditions, dissolve 0.0858g copper nitrate hydrate in 20ml distilled water (two parts), dissolve 0.04g sodium hydroxide in 20ml distilled water, and mix the two solutions under magnetic stirring to make copper hydroxide turbid liquid. Then the cross-sectional area is 2.5mm 2 , the copper rod with a length of 4 cm was cleaned and treated, and immersed in the above cloudy solution for ultrasonication for 10 minutes.

[0040] Transfer a portion of the prepared sodium hydroxide solution to a 60mL reactor, and then transfer the copper rod sonicated in the turbid solution to the reactor. Tighten the lid of the kettle, and react in an oven at 80°C for 4 hours. After the reaction, the kettle was taken out and cooled to room temperature naturally, a layer of black copper oxide was covered on the copper rod, rinsed with distilled water, and the copper rod grown with copper oxide was naturally dried to obtain a copper-copper oxide co...

Embodiment 2

[0044] Under the condition of room temperature and magnetic stirring, dissolve 0.04g sodium hydroxide in 20ml distilled water, and then 2 , the length of the 4cm copper rod is cleaned and processed, and the copper rod is directly put into the sodium hydroxide solution and transferred into the reaction kettle together. Tighten the lid of the kettle, and react in an oven at 80°C for 4 hours. After the reaction, the kettle was taken out and cooled to room temperature naturally, a layer of black copper oxide was covered on the copper rod, rinsed with distilled water, and the copper rod with copper oxide was naturally dried to obtain a copper-copper oxide composite electrode. The surface of the resulting composite electrode is only slightly covered with a layer of copper oxide nanobelts.

Embodiment 3

[0046] Under room temperature and magnetic stirring conditions, dissolve 0.0858g copper nitrate hydrate in 20ml distilled water, dissolve 0.08g sodium hydroxide in 20ml distilled water, and mix the two solutions under magnetic stirring to prepare a copper hydroxide turbid solution. Then the cross-sectional area is 2.5mm 2 , the copper rod with a length of 4 cm was cleaned and treated, and immersed in the above cloudy solution for ultrasonication for 10 minutes.

[0047] Transfer a portion of the prepared sodium hydroxide solution to a 60mL reactor, and then transfer the copper rod sonicated in the turbid solution to the reactor. Tighten the lid of the kettle, and react in an oven at 80°C for 4 hours. After the reaction, the kettle was taken out and cooled to room temperature naturally, a layer of black copper oxide was covered on the copper rod, rinsed with distilled water, and the copper rod grown with copper oxide was naturally dried to obtain a copper-copper oxide composit...

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Abstract

The invention discloses a preparation method of a copper-copper oxide composite electrode, which comprises the following steps: a. cleaning of a copper rod; b. preparation of a cupric hydroxide suspension; and c. preparation of the composite electrode: adding a prepared alkali (b) solution in a reaction kettle, immersing the copper rod in the alkali (b) solution, closing the reaction kettle, reacting at 60-80 DEG C for 2-6 hours, cooling to room temperature, cleaning the electrode, and drying at room temperature, thereby obtaining the composite electrode. The mass / area ratio of the copper oxide-copper electrode is 0.0063-0.0134g / cm<2>. Compared with the prior art, the invention has the advantages of high reproducibility, low energy consumption, low minimum limit of detected ions (0.4 mu M), high response stability during ion monitoring and low synthesis cost, is simple to operate, and is suitable for industrial large-scale preparation; and the prepared copper oxide nano belt is uniformly coated on the copper electrode surface, and the electrode with high specific area can be used as a sensor material to sufficiently contact the measured object, so that the electrocatalytic reaction is sufficient and efficient.

Description

technical field [0001] The invention belongs to a preparation method of an electrode, in particular to a preparation method of a composite electrode. Background technique [0002] With the rapid development of science and technology, traditional electrodes as sensors cannot meet the needs of reality. Traditional sensor electrodes include glassy carbon electrodes, gold electrodes, etc., which have many defects during use. For example, such electrodes need to be polished, modified, dried and other processing steps before use, and these processing steps directly affect the electrochemical response. Therefore, when the same material is modified, the same electrode is treated twice with the same steps, but the results will be different. Furthermore, as a noble metal electrode, its price is relatively expensive. [0003] Nano sensor (Nano Sensor) is a new cutting-edge sensor technology, it has a wide range of applications in aerospace, machinery, instrumentation, automobile man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 张小俊于刘涛黄燕汪玲玲季蓉
Owner ANHUI NORMAL UNIV
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