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Method for preparing nano copper protoxide material by metal copper anodic oxidation method

A nano-cuprous oxide, anodizing technology, applied in copper oxide/copper hydroxide, electrolysis process, electrolysis components, etc., can solve problems such as slow speed and slow electrolysis

Inactive Publication Date: 2005-06-29
HUAZHONG NORMAL UNIV
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  • Abstract
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Problems solved by technology

But this method requires slow electrolysis, resulting in very slow preparation

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: use 1dm 2 The copper plate is the anode, titanium or nickel is the cathode, and there is a diaphragm between the cathode and the anode to prevent the hydrogen bubbles generated by the cathode from contacting the generated Cu. 2 O. Place 3.5MNaCl-0.01MNaOH in the electrolytic cell as the electrolyte. Suspended into 1g of carrier carbon nanotubes containing monovalent copper crystal centers, at 80°C and 0.5A / dm 2 Under the electrolysis conditions of the current density, the electrolysis was carried out for 60 minutes. After the electrolysis is completed, the carbon nanotube-containing Cu 2 O electrolyte, centrifuged or filtered to remove the electrolyte, the precipitate was washed, stabilized and vacuum dried.

[0021] The obtained Cu was observed by transmission electron microscope 2 O-carbon nanotube composites, found Cu 2 O is in the form of dark particles grown on light gray carbon nanotubes. Cu 2 O particles are between 20-80nm. Cu 2 The O par...

Embodiment 2

[0022] Example 2: In the chloride solution of the electrolytic cell described in Example 1, add 0.001M benzotriazole, control the electrolysis power to 5A h / L, stir the electrolyte solution vigorously during the electrolysis process, and use it after washing and drying The product observed by the electron microscope is octahedral Cu 2 O is crystalline, and its average particle size is 60-80nm.

Embodiment 3

[0023] Embodiment 3: introduce trace copper element on commercial graphite powder by vapor deposition, the graphite powder containing copper crystal center is suspended in the electrolytic solution shown in embodiment one, with the condition electrolysis of embodiment one and washing, drying, Get Cu 2 O-activated carbon composite, electron microscope observation shows that Cu 2 O is attached to the activated carbon in the form of 10-80nm particles.

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Abstract

In the chloride electrolyte said invention adds crystal growth inhibitor of Cu2O or / and crystal centre of Cu2O or carrier containing crystal centre or / and another nano material and controls the concentration of chloride salt in the electrolytic liquor, concentration of alkali, electric energy consumption and electrolytic temperature so as to can obtain the Cu2O powder body whose grain size is less than 100 nm or nano Cu2O with carrier or nano composite materials, such as nano Cu2O2, carbon nano tube and Cu2O-nano titanium dioxide.

Description

technical field [0001] The invention belongs to a method for preparing nano-cuprous oxide with photocatalysis Background technique [0002] Cuprous oxide (Cu 2 O) is a visible light catalyst that can be widely used in solar cells, wastewater treatment, gas purification, sterilization, deodorization, pesticides and ship antifouling coatings, etc. It is also a commonly used catalyst in the petrochemical industry. As a photocatalyst, its advantage is that it can use the visible light in sunlight, and its disadvantage is that the recombination rate of electrons and holes generated is high, so it is better than titanium dioxide (TiO 2 ) has a low utilization rate of light energy. To overcome the shortcoming of low efficiency, it is necessary to increase the surface area of ​​the photocatalyst, one of the ways is to use Cu 2 O is deposited on glass fibers or porous materials (Appl.Surf.Sci.174:177(2001); J.Elecrochem.Soc.147(2):486(2000)), and the most thorough method should be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02C25B1/00
Inventor 李家麟李奂轮李阊轮余颖
Owner HUAZHONG NORMAL UNIV
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