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Cuprous oxide fifty-surface crystallite as well as preparation method and application thereof

A cuprous oxide and hexahedral technology is applied in the field of cuprous oxide icosahedral crystallites and their preparation, which can solve the problems of restricting subsequent research and wider application, and achieves excellent visible light catalytic activity, cheap and easy-to-obtain raw materials, and low cost. low effect

Active Publication Date: 2012-09-05
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crystal surface is adsorbed by these organic additives, which greatly limits the follow-up research and wider application of its various properties.

Method used

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  • Cuprous oxide fifty-surface crystallite as well as preparation method and application thereof
  • Cuprous oxide fifty-surface crystallite as well as preparation method and application thereof
  • Cuprous oxide fifty-surface crystallite as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Dissolve the copper source compound copper acetate monohydrate in 5ml deionized water to form an aqueous solution of transparent copper acetate monohydrate with a concentration of 0.2mol / L, then be warming up to 70°C, add 6mol / L precipitating agent sodium hydroxide 2ml of the aqueous solution was reacted for 5 minutes to obtain a suspension;

[0034]2) Add 0.75mol / L of reducing agent glucose aqueous solution 1ml in step 1) to the obtained suspension and react at 70°C for 5 minutes, the reaction is completed to obtain precipitation, the resulting precipitate is separated from the solution by natural sedimentation, and washed with water After 7 times, it was dried in a vacuum drying oven at 60°C and a vacuum degree of 100Pa, and finally cuprous oxide icosahedral crystallites with clear edges and corners, regular shapes, uniform sizes and good dispersibility were obtained.

[0035] The scanning electron microscope photo of the product is as follows figure 1 shown, comp...

Embodiment 2

[0037] 1) Dissolve the copper source compound copper acetate monohydrate in 5ml deionized water to form an aqueous solution of transparent copper acetate monohydrate with a concentration of 0.2mol / L, then be warming up to 50°C, add 6mol / L precipitating agent sodium hydroxide 2ml of the aqueous solution was reacted for 5 minutes to obtain a suspension;

[0038] 2) Add 0.65mol / L of reducing agent glucose aqueous solution 1ml in step 1) to the obtained suspension and react at 50°C for 20 minutes. After the reaction is completed, precipitation is obtained, and the resulting precipitate is separated from the solution by natural sedimentation and washed with water. After 7 times, it was dried in a vacuum drying oven at 60°C and a vacuum degree of 100Pa, and finally cuprous oxide icosahedral crystallites with clear edges and corners, regular shapes, uniform sizes and good dispersibility were obtained.

[0039] Compared with Example 1, the cuprous oxide icosahedral crystallites obtain...

Embodiment 3

[0041] 1) Dissolve the copper source compound copper acetate monohydrate in 5ml deionized water to form a solution of transparent copper acetate monohydrate with a concentration of 0.3mol / L, then be warming up to 70°C, add 10mol / L precipitant sodium hydroxide 2ml of the aqueous solution was reacted for 5 minutes to obtain a suspension;

[0042] 2) Add 1 ml of reducing agent glucose solution of 0.8mol / L in step 1) to the obtained suspension and react at 70°C for 5 minutes. After the reaction is completed, precipitation is obtained, and the resulting precipitate is separated from the solution by natural sedimentation and washed with water. After 3 times, drying was performed in a vacuum drying oven at 60° C. and a vacuum degree of 100 Pa to finally obtain cuprous oxide icosahedral crystallites.

[0043] Compared with Example 1, the {211} high-index crystal planes of the cuprous oxide icosahedral crystallites obtained in this example are significantly increased, while the other e...

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Abstract

The invention discloses a cuprous oxide fifty-surface crystallite as well as a preparation method and application thereof. According to the preparation method, copper acetate monohydrate is used as a copper source, water, strong base and glucose are respectively used as a solvent, a precipitator and a reducing agent, the reaction temperature is 50-80 DEGC, and the cuprous oxide fifty-surface crystallite is obtained through an oxidation-reduction reaction. The cuprous oxide fifty-surface crystallite prepared according to the invention is formed by closing 24 high-index crystal faces ({211} crystal face or {311} crystal face), 12 {110} crystal faces, 8 {111} crystal faces and 6 {100} crystal faces, and comprises 120 ridges and 72 vertexes. The method has the advantages of gentle reaction condition, simple equipment, convenient operation, low cost, high yield, environment protection, suitability for large-scale industrial production and the like. The crystallite has excellent visible light catalytic activity, and has wide application prospect in aspects of solar batteries, hydrogen production, lithium ion batteries, biosensors and the like.

Description

technical field [0001] The invention belongs to the category of solution chemical preparation methods, and relates to a cuprous oxide icosahedral crystallite and a preparation method and application thereof. Background technique [0002] In recent years, the research and preparation technology of nanomaterials has attracted widespread attention from all over the world. Effective and precise regulation of the composition, size, shape, and exposed crystal planes of nanomaterials can improve their optical, electrical, and magnetic properties. The synthesis of micro-nano functional materials with a high proportion of exposed high-index crystal planes is gradually becoming one of the research hotspots in the preparation technology of micro-nano materials. The high-index crystal face usually contains a high density of atomic steps and dangling bonds, and has an open surface structure. Compared with the low-index crystal face, it has more excellent reactivity, especially catalytic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B01J23/72B82Y40/00B82Y30/00
Inventor 张铁锐梁运辉吴骊珠佟振合
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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