Preparing method for copper oxide spherical hierarchical structure material

A hierarchical structure, copper oxide technology, applied in copper oxide/copper hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., to achieve the effect of large specific surface area, good photocatalytic performance, and low preparation cost

Inactive Publication Date: 2016-11-16
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many conventional chemical preparation methods of nano-copper oxide, such as hydrothermal method, co-precipitation method, sol-gel method, etc., but these conventional preparations have their corresponding shortcomings and limit the application of nano-copper oxide materials

Method used

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  • Preparing method for copper oxide spherical hierarchical structure material
  • Preparing method for copper oxide spherical hierarchical structure material
  • Preparing method for copper oxide spherical hierarchical structure material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add the mineralizer ferric nitrate to the oxalic acid aqueous solution to form a transparent mixed solution. Under the conditions of a constant temperature of 30 °C and a stirring speed of 150 rpm, the copper nitrate aqueous solution is added dropwise to the above transparent mixed solution. The molar concentration of copper nitrate aqueous solution is 0.1 mol / L, and the molar concentration of oxalic acid aqueous solution is 0.5 mol / L. The molar ratio of ferric nitrate and oxalic acid is 1:50; the molar ratio of copper nitrate and oxalic acid is 1:10. The rate of dripping the copper nitrate solution was 120 drops / min, and the stirring reaction time was 30 minutes. After the reaction, it was filtered and washed. The washing liquid was a methanol-water mixed solution (volume ratio was 1:1), and the washing frequency was 10 times. Then post-drying, the drying time is 3 hours, the drying temperature is 100°C, and the heating rate is 10°C / min. The calcination is continued in...

Embodiment 2

[0037] Add the mineralizer ferric chloride to the oxalic acid aqueous solution to form a transparent mixed solution. Under the conditions of a constant temperature of 30 °C and a stirring speed of 150 rpm, the copper chloride aqueous solution is added dropwise to the above transparent mixed solution. The molar concentration of the copper chloride aqueous solution is 0.1 mol / L, and the molar concentration of the oxalic acid aqueous solution is 0.5 mol / L. The molar ratio of ferric chloride and oxalic acid is 1:50; the molar ratio of copper chloride and oxalic acid is 1:10. The dripping rate of the copper chloride solution is 120 drops / min, and the stirring reaction time is 30 minutes. After the reaction is over, filter and wash. The washing liquid is a methanol-water mixed solution (volume ratio is 1:1), and the number of washes is 10 times . Then post-drying, the drying time is 3 hours, the drying temperature is 100°C, and the heating rate is 10°C / min. The calcination is conti...

Embodiment 3

[0040] Add the mineralizer ferric nitrate to the oxalic acid aqueous solution to form a transparent mixed solution. Under the conditions of a constant temperature of 30 °C and a stirring speed of 150 rpm, the copper nitrate aqueous solution is added dropwise to the above transparent mixed solution. The molar concentration of copper nitrate aqueous solution is 0.1 mol / L, and the molar concentration of oxalic acid aqueous solution is 0.5 mol / L. The molar ratio of ferric nitrate and oxalic acid is 1:10; the molar ratio of copper nitrate and oxalic acid is 1:50. The rate of dripping the copper nitrate solution was 120 drops / min, and the stirring reaction time was 30 minutes. After the reaction, it was filtered and washed. The washing liquid was a methanol-water mixed solution (volume ratio was 1:1), and the washing frequency was 10 times. Then post-drying, the drying time is 3 hours, the drying temperature is 100°C, and the heating rate is 10°C / min. The calcination is continued in...

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Abstract

The invention belongs to the technical field of functional material preparation and relates to a preparing method for a copper oxide spherical hierarchical structure material. A mineralizing agent is added into an oxalic acid aqueous solution, then a soluble copper salt aqueous solution is dropwise added, and a reaction is carried out under the constant temperature and stirring conditions until precursor precipitate is generated; filtering, washing, drying and roasting are carried out, and the copper oxide spherical hierarchical structure material is obtained. The copper oxide spherical hierarchical structure material is formed through assembling of a large quantity of copper oxide nanoparticles. The dimension of spheres ranges from 1 mm to 2 mm, the dimension of the copper oxide nanoparticles ranges from 40 nm to 60 nm, and the dimension of pore canals of the copper oxide nanoparticles ranges from 10 nm to 30 nm. The technology is low in preparing cost, operation is easy to control, high production efficiency is achieved, and industrial mass production can be achieved. The copper oxide spherical hierarchical structure material prepared with the method has high catalytic activity when serving as a visible light catalytic material and has wide application prospects in the fields such as dye wastewater and indoor harmful gas degradation and photocatalystic disinfection.

Description

Technical field [0001] The invention belongs to the technical field of preparation of functional materials, and specifically relates to a preparation method of a copper oxide spherical grade structural material. Background technique [0002] The controlled synthesis of the morphology and particle size of functional materials at the micro-nano scale has become a very active research field. The preparation method of micro-nano materials is an important research content of materials science and technology. The improvement of preparation methods promotes the generation of new materials, which is more useful for understanding the nucleation and growth process of crystals at the atomic and molecular level, which is helpful for further discussion The influence of the crystalline structure morphology of the material on the physical and chemical properties of the material. The hierarchical structure form is an important type of structure (hierarchical architecture). The hierarchical stru...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y30/00B82Y40/00
CPCC01G3/02C01P2002/72C01P2004/03C01P2004/50C01P2004/64C01P2006/80
Inventor 张杰许家胜
Owner BOHAI UNIV
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