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

A technology of cuprous oxide and hedrons, which is applied in the field of cuprous oxide pentahedral microcrystals and its preparation, can solve problems that limit follow-up research and wider application, and achieve excellent visible light catalytic activity, mild reaction temperature, and convenient operation Effect

Active Publication Date: 2014-09-17
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • 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 a transparent aqueous solution of copper acetate monohydrate with a concentration of 0.2mol / L, then raise the temperature to 70°C, and add 6mol / L precipitant sodium hydroxide 2ml of the aqueous solution was reacted for 5 minutes to obtain a suspension;

[0034]2) Add 1ml of 0.75mol / L reducing agent glucose aqueous solution to the suspension obtained in step 1) and react at 70°C for 5 minutes. After the reaction is completed, a precipitate is obtained, and the formed 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 of 100 Pa, and finally obtained cuprous oxide pentahedral microcrystals with clear edges, regular shapes, uniform sizes, and good dispersion.

[0035] The scanning electron microscope photograph of the product is as follows figure 1 , compared with th...

Embodiment 2

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

[0038] 2) Add 1ml of 0.65mol / L reducing agent glucose aqueous solution to the suspension obtained in step 1) and react at 50°C for 20 minutes. After the reaction is completed, a precipitate is obtained, and the formed 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 of 100 Pa, and finally obtained cuprous oxide pentahedral microcrystals with clear edges, regular shapes, uniform sizes, and good dispersion.

[0039] Compared with Example 1, the cuprous oxide pentahedral crystallites obtained in this example have a...

Embodiment 3

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

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

[0043] Compared with Example 1, the {211} high-index crystal face of the cuprous oxide pentahedral crystallites obtained in this embodiment is obviously increased, and other exposed c...

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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 method, and relates to a cuprous oxide pentahedral microcrystal and its preparation method and application. 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 control of parameters such as 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 faces is gradually becoming one of the research hotspots in the preparation technology of micro-nano materials. High-index crystal planes usually contain high-density atomic steps and dangling bonds, and have an open surface structure. Compared with low-index crystal planes, they have better reactivity, especially catalytic reactivi...

Claims

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Application Information

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Patent Type & Authority Patents(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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