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Nano cuprous oxide and preparation method and application thereof

A technology of nano-cuprous oxide and reaction, applied in botany equipment and methods, copper oxide/copper hydroxide, application, etc., can solve problems such as poor antibacterial performance, and achieve convenient industrial production, excellent antibacterial and kill Influenza virus, the effect of simple and easy-to-control preparation process

Inactive Publication Date: 2021-08-27
THE GBA NAT INST FOR NANOTECHNOLOGY INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Based on the problem of poor antibacterial performance of traditional micron-sized cuprous oxide, it is necessary to provide a nano cuprous oxide with better antibacterial performance and its preparation method and application

Method used

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  • Nano cuprous oxide and preparation method and application thereof
  • Nano cuprous oxide and preparation method and application thereof
  • Nano cuprous oxide and preparation method and application thereof

Examples

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preparation example Construction

[0037] The nano cuprous oxide of the present invention will be described in detail below in combination with the preparation method of the nano cuprous oxide of the present invention.

[0038] One embodiment of the present invention provides a method for preparing nano-cuprous oxide, comprising the following steps S10-S20:

[0039] S10: the divalent copper salt and the alkaline substance undergo a metathesis reaction in a solvent to obtain a precipitate. Wherein, the condition of the metathesis reaction is 10° C. to 37° C. for 0.5 h to 4 h.

[0040] Step S10 is carried out under milder conditions by controlling the metathesis reaction of the divalent copper salt and the alkaline substance in the solvent, which is conducive to obtaining a precipitate with a smaller particle size, so as to obtain nanometer-sized cuprous oxide.

[0041] In some of these embodiments, the condition of the metathesis reaction is preferably 10°C-37°C for 0.5h-4h. Within this preferred range, it is ...

Embodiment 1～9

[0083] Step 1. Take 9 parts of 100mL 0.1mol / L copper sulfate solution, add 15mL of 1mol / L potassium hydroxide solution respectively, and stir at 10°C under normal pressure for 0.5h, 1h and 4h respectively; or 25°C Stirring under normal pressure, the reaction duration is 0.5h, 1h and 4h respectively; The obtained substrate was centrifuged at 7500r / min, and the resulting precipitate was washed three times with deionized water, all of which were blue in color.

[0084] Step 2: Add 9 parts of the substrate obtained in Step 1 to 100 mL of water and stir to disperse evenly, then gradually add 20 mL of 0.02 mol / L sodium borohydride aqueous solution, respectively, stir at 10°C under normal pressure, and the reaction duration is 0.5 h , 1h and 4h; or stir under normal pressure at 25°C, the reaction duration is 0.5h, 1h and 4h respectively; or stir at 37°C under normal pressure, the reaction duration is 0.5h, 1h and 4h respectively, 7500r / min Nine parts of products were obtained by cen...

Embodiment 10～12

[0090] The preparation technology of embodiment 10~12 is basically the same as embodiment 5, and difference only is:

[0091] In step 1, the dosage of 1 mol / L potassium hydroxide solution was 20 mL, 25 mL and 35 mL respectively, and the mixture was stirred for 1 h at 25°C under normal pressure, and the obtained precipitates were all blue; the products obtained in step 2 were all yellow-green cuprous oxide nanoparticles.

[0092] Examples 1-12 show that controlling the ratio of the amount of copper salt, alkali and reducing agent to 1:(1.5-3.5):0.04, the products obtained are all yellow-green cuprous oxide nanoparticles.

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Abstract

The invention provides nano cuprous oxide as well as a preparation method and application thereof. The preparation method of the nano cuprous oxide comprises the following steps: carrying out double decomposition reaction on a bivalent copper salt and an alkaline substance in a solvent to obtain a precipitate; and dispersing the precipitate in a dispersing agent, adding a reducing agent to carry out reduction reaction, taking a solid, and drying to obtain nano cuprous oxide; wherein the conditions of the double decomposition reaction and the reduction reaction are both 0.5-4 hours at the temperature of 10-37 DEG C; the molar ratio of copper ions to the alkaline substance to the reducing agent in the cupric salt is 1: (1.5-3.5): (0.01-1.0); and the alkaline substance is at least one of ammonia water and alkali metal hydroxide. According to the preparation method of the nano cuprous oxide, through a two-step method, the raw materials are regulated and controlled in a specific proportion range, and the double decomposition reaction and the reduction reaction are controlled to be carried out under specific conditions, so that the nano-sized cuprous oxide with antibacterial and antiviral properties can be prepared.

Description

technical field [0001] The invention relates to the technical field of antibacterial material synthesis, in particular to a nano cuprous oxide and its preparation method and application. Background technique [0002] Antibacterial materials refer to a new class of functional materials that have the function of killing or inhibiting microorganisms. Cuprous oxide is an oxide of positive monovalent copper, and it is also a p-type semiconductor with a band gap of 2.17eV. Cuprous oxide is widely used in marine antifouling coatings, textiles, building materials, plastics, air conditioning filters, animal feed, agricultural fungicides, ceramics, glass and photocatalysis due to its high cost performance, acceptable cost and unique physical and chemical properties and other fields. Cuprous oxide also has certain antibacterial properties, but its antibacterial properties have a lot to do with its existing state. Usually micron or submicron-sized cuprous oxide has only weak antibact...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y40/00A01N59/20A01P1/00A01P3/00
CPCC01G3/02B82Y40/00A01N59/20C01P2004/16C01P2004/30C01P2004/03C01P2002/72
Inventor 郑文富付金龙
Owner THE GBA NAT INST FOR NANOTECHNOLOGY INNOVATION
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