A method for preparing superfine cuprous oxide with high yield

An ultra-fine cuprous oxide, high-yield technology, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems of low cuprous oxide yield, harsh system process, and uneasy control, and achieve excellent electrochemical performance, Less environmental pollution, good shape and structure

Active Publication Date: 2020-09-11
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Studies have shown that the properties of oxide composite capacitor electrode materials obtained by different preparation methods are quite different, and the above-mentioned various methods also have low productivity, high cost, harsh system process, or poor particle dispersion caused by precipitation method and other shortcomings
[0005] The literature "Study on the Yield of Optimizing the Preparation of Cuprous Oxide by Response Surface Method" (Contemporary Chemical Industry, 2016, Vol. The influence of temperature and sample concentration on the final product, but this method cannot be easily controlled in the actual operation process, and the yield of cuprous oxide is not high

Method used

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  • A method for preparing superfine cuprous oxide with high yield
  • A method for preparing superfine cuprous oxide with high yield

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Experimental program
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Effect test

Embodiment 1

[0029] (1) Prepare the solution

[0030] Mix anhydrous copper sulfate with water to make 40mL copper sulfate solution with a concentration of 1.0mol / L; mix anhydrous glucose with water to make 40mL glucose solution with a concentration of 0.5mol / L; mix sodium hydroxide with water to make into 20 mL of sodium hydroxide solution with a concentration of 5.3 mol / L.

[0031] (2) Preparation of ultrafine cuprous oxide by low temperature method

[0032] At room temperature (20°C), add 40mL of 1.0mol / L copper sulfate solution to 20mL of 5.3mol / L sodium hydroxide solution in the reaction vessel, and stir (540 rpm) while adding to generate copper hydroxide Precipitation; then at room temperature (20°C), add 40mL of 0.5mol / L glucose solution, and stir (540 rpm) while adding, the pH value of the hydrothermal reaction system is about 13.4; then seal the reaction vessel; then use Heat the water bath to 60°C, in a subcritical state, stir (540 rpm) and react for 6 hours, filter 3 times, pla...

Embodiment 2

[0035] (1) Prepare the solution

[0036] Mix anhydrous copper sulfate with water to make 100mL copper sulfate solution with a concentration of 1.1mol / L, mix anhydrous glucose with water to make 100mL glucose solution with a concentration of 0.5mol / L, mix sodium hydroxide with water to make into 50 mL of sodium hydroxide solution with a concentration of 5.2 mol / L.

[0037] (2) Preparation of ultrafine cuprous oxide by low temperature method

[0038] At room temperature (20°C), add 100mL of 1.1mol / L copper sulfate solution to 50mL of 5.2mol / L sodium hydroxide solution in the reaction vessel, and stir (540 rpm) while adding to form copper hydroxide precipitate; Then at room temperature (20°C), add 100mL of 0.5mol / L glucose solution, and stir while adding (540 rpm), the pH value of the hydrothermal reaction system is about 13.3; then seal the reaction vessel; then heat with a water bath To 60°C, under supercritical state, stir (540 rpm) for 6 hours, filter 4 times, and place the...

Embodiment 3

[0040] (1) Prepare the solution

[0041] Mix anhydrous copper sulfate with water to make 400mL copper sulfate solution with a concentration of 1.0mol / L, mix anhydrous glucose with water to make 400mL glucose solution with a concentration of 0.5mol / L, mix sodium hydroxide with water to prepare into 200 mL of sodium hydroxide solution with a concentration of 5.2 mol / L.

[0042] (2) Preparation of ultrafine cuprous oxide by low temperature method

[0043]At room temperature (20°C), add 400mL of 1.0mol / L copper sulfate solution to 200mL of 5.2mol / L sodium hydroxide solution in the reaction vessel, and stir (540 rpm) while adding to form copper hydroxide precipitate; Then at room temperature (20°C), add 400mL of 0.5mol / L glucose solution, and stir while adding (540 rpm), the pH value of the hydrothermal reaction system is about 13.4; then seal the reaction vessel; then heat it with a water bath To 60 ℃, under the subcritical state, stirring (540 rpm) reaction for 6 hours, filtere...

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Abstract

The invention belongs to the field of organic materials and particularly relates to a method for preparing ultrafine cuprous oxide with high yield. Freshly-prepared alkaline copper salt or copper hydroxide and glucose are subjected to hydrothermal reaction in a subcritical state in an alkali-containing aqueous solution to produce the ultrafine cuprous oxide. The method for preparing the ultrafinecuprous oxide, provided by the invention, has the benefits that by taking the glucose as a reducing agent, the low-temperature hydrothermal reaction is performed under alkaline conditions; any additive is not added, the post-treatment process is simple, the operation is easy, the environmental pollution is small, and the overall preparation process is simplified; and the yield of the cuprous oxideis up to 94.7-96.5 percent and is kept stable in an amplification test, and therefore, the industrial application prospect is broad.

Description

technical field [0001] The invention belongs to the field of inorganic materials, and in particular relates to a method for preparing ultrafine cuprous oxide with high yield. Background technique [0002] As a very important inorganic material, cuprous oxide is widely used in many fields. It is a catalyst for organic synthesis, and it also has many new properties and is widely used, such as: as an agricultural fungicide, as a feed additive, as a special colorant in the field of technology, and as a rectifier in the field of electronic devices. Nanoscale cuprous oxide has a good application in the field of optoelectronics because of its corresponding quantum size effect, and it has been used and developed in the field of environmental protection because it is beneficial to the degradation of organic pollutants. It can also be used as an intermediate in various ceramic capacitors. body. As a nanoscale material, nanoscale cuprous oxide has corresponding quantum effects, small...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02
CPCC01G3/02C01P2002/72C01P2004/03
Inventor 邹坤李文尧胡鹤鸣顾起帆王锦波常帅帅周旭余东洋
Owner SHANGHAI UNIV OF ENG SCI
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