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Method for preparing nano cuprous oxide powder based on ion exchange process

A technology of nano-cuprous oxide and ion exchange, which is applied in the field of chemical industry and nano-functional materials, can solve the problems of high preparation process requirements and easy agglomeration of cuprous oxide powder, and achieve wide source of raw materials, good photocatalytic degradation performance, reaction The effect of low temperature

Pending Publication Date: 2021-06-25
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing nano-cuprous oxide powder based on ion exchange technology. This method for preparing nano-cuprous oxide powder based on ion-exchange technology is used to solve the problem of high requirements for the existing cuprous oxide preparation process or preparation process. The problem that cuprous oxide powder is easy to agglomerate

Method used

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  • Method for preparing nano cuprous oxide powder based on ion exchange process
  • Method for preparing nano cuprous oxide powder based on ion exchange process
  • Method for preparing nano cuprous oxide powder based on ion exchange process

Examples

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Embodiment 1

[0023] Take 100 mL of copper chloride solution with a concentration of 0.25 mol / L and react with 200 mL of cation exchange resin in a pneumatic stirring device for 1 hour to obtain copper hydroxide gel. Transfer it to another reactor, add glucose, the molar ratio of glucose and copper ions is added at 1:2, the reaction temperature is controlled at 70°C, the pH of the system is adjusted to 10 with sodium hydroxide, and the reaction is carried out for 1h. The cuprous precipitate was suction-filtered, washed three times with absolute ethanol, and vacuum-dried at 30°C for 20 hours to obtain nano-cuprous oxide powder. Pneumatic stirring device see figure 1 , the pneumatic stirring device includes a vacuum pump 1, a buffer bottle 2, an ion exchange column 3, and an open container. In the present embodiment, the open container is a beaker 4, and the ion exchange column 3 is fixed directly above the beaker 4 by an iron stand 5, and the ion exchange The air tube at the bottom of the c...

Embodiment 2

[0025] Take 100 mL of copper sulfate solution with a concentration of 0.5 mol / L and react with 200 mL of cation exchange resin in a pneumatic stirring device for 2 hours to obtain copper hydroxide gel. And transfer it to the reactor, add glucose, the molar ratio of glucose copper ion is added at 1:2.5, the reaction temperature is controlled at 75°C, the pH of the system is adjusted to 11 with sodium hydroxide, and the reaction is 1.5h, and the obtained oxynitride The copper precipitate was suction-filtered, washed three times with absolute ethanol, and vacuum-dried at 40° C. for 15 hours to obtain nano-cuprous oxide powder.

Embodiment 3

[0027] Take 200mL copper nitrate solution with a concentration of 1mol / L and react with 300mL cation exchange resin in a pneumatic stirring device for 1.5h to obtain copper hydroxide gel. And transfer it to the reactor, add glucose, glucose copper ion molar ratio is added at 1:3, the reaction temperature is controlled at 80 ° C, the pH of the system is adjusted to 10 with sodium hydroxide, the reaction is 2h, and the obtained cuprous oxide The precipitate was suction-filtered, washed three times with absolute ethanol, and vacuum-dried at 50° C. for 15 hours to obtain nano-cuprous oxide powder.

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Abstract

The invention relates to a method for preparing nano cuprous oxide powder based on an ion exchange process. The method comprises the following steps: respectively reacting copper salt solutions with different concentrations with cation exchange resin in a pneumatic stirring device for 0.5-3 hours, obtaining a copper-based precursor through an ion exchange path, preparing uniformly dispersed copper hydroxide gel, adding 10-300mL of the gel into a reactor, and reacting with a reducing agent glucose for 0.5-2 hours at the reaction temperature of 70-90 DEG C and the pH value of a reaction system of 10-11; and taking out the product after the reaction is completed, centrifuging, filtering, cleaning with absolute ethyl alcohol, and drying in vacuum to obtain the cuprous oxide nanoparticles. With application of the ion exchange technology, generated copper hydroxide gel can be effectively dispersed in a pneumatic stirring mode, the copper-based precursor is effectively modified through the mechanochemical effect, and agglomeration in the follow-up nano-cuprous oxide preparation process is prevented; operation is simple, conditions are mild and the process is short.

Description

Technical field: [0001] The invention belongs to the fields of chemical engineering and nano functional materials, and in particular relates to a method for preparing cuprous oxide nanomaterials based on an ion exchange process. Background technique: [0002] Cuprous oxide is a P-type semiconductor material with a bandgap width of 2.17 eV and has strong photocatalytic performance under visible light conditions. It is mainly used in antibacterial, photocatalytic, gas sensing, carbon monoxide oxidation, lithium battery cathode materials and many other fields, and has broad application prospects. The common preparation methods of cuprous oxide include liquid phase reduction method, electrochemical deposition method, template method, sol-gel method and sputtering method. Although these methods can prepare cuprous oxide nanomaterials, there are also problems to a certain extent, such as the poor biocompatibility of the reducing agent in the liquid phase reduction method, the hig...

Claims

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Application Information

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IPC IPC(8): C01G3/02
CPCC01G3/02C01P2002/72C01P2004/03
Inventor 刘相尧齐宇鑫杜朝鹏曲欣阁张丹瀛荆国林张海丽姜珊张钦颖
Owner NORTHEAST GASOLINEEUM UNIV
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