Method for preparing cupric oxide nano-hollow ball with forerunner reaction

A precursor, copper oxide technology, applied in the field of nanomaterials, can solve problems such as blank hollow spheres, and achieve the effects of low price, avoiding the introduction of impurities, and good retention

Inactive Publication Date: 2008-12-10
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are a few reports on the research of hollow copper oxide nanospheres, there is almost no new mechanism for...

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  • Method for preparing cupric oxide nano-hollow ball with forerunner reaction
  • Method for preparing cupric oxide nano-hollow ball with forerunner reaction
  • Method for preparing cupric oxide nano-hollow ball with forerunner reaction

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Embodiment 1

[0035] First prepare solution A: 3.41g CuCl 2 2H 2 O was dissolved in 100 mL of deionized water and dissolved under stirring at 300-500 rpm. At the same time, solution B: 5M concentrated ammonia solution was prepared. CuCl in A solution 2 After stable dissolution and complete transparency, add solution B dropwise under magnetic stirring at 300-600 rpm until PH=10-14. Due to the addition of ammonia water, solution A immediately produces a blue precipitate. With the gradual addition of ammonia water under magnetic stirring, the blue precipitate dissolves rapidly, forming a stable blue Cu(NH 3 ) 4 2+ of ammonia solution. Cu(NH 3 ) 4 2+8 mL of the solution was added to 75 mL of absolute ethanol, and transferred to a 100 mL Teflon tube with a volume ratio of 82%. React at 180°C for 12h to get green Cu 2 (OH) 3 Precipitation of Cl nanohollow spheres. Repeat washing with deionized water and absolute ethanol 5 times each, and dry under vacuum at 50°C for 4 hours. The pel...

Embodiment 2

[0037] First prepare solution A: 3.41g CuCl 2 2H 2 O was dissolved in 100 mL of deionized water and dissolved under stirring at 300-500 rpm. At the same time, solution B: 5M concentrated ammonia solution was prepared. CuCl in A solution 2 After stable dissolution and complete transparency, add solution B dropwise under magnetic stirring at 300-600 rpm until PH=9.5. Due to the addition of ammonia water, solution A immediately produces a blue precipitate. With the gradual addition of ammonia water under magnetic stirring, the blue precipitate dissolves rapidly, forming a stable blue Cu(NH 3 ) 4 2+ of ammonia solution. Cu(NH 3 ) 4 2+ Add 8mL of the solution to 75mL of absolute ethanol, transfer to a 100mL Teflon tube, and react at 180°C for 12h to obtain green Cu 2 (OH) 3 Cl precipitates. Repeat washing with deionized water and absolute ethanol 5 times each, and dry under vacuum at 50°C for 4 hours. The pellet was then annealed at 400°C for 2 hours. Figure 5 It is ...

Embodiment 3

[0039] First prepare solution A: 3.41g CuCl 2 2H 2 O was dissolved in 100 mL of deionized water and dissolved under stirring at 300-500 rpm. At the same time, solution B: 5M concentrated ammonia solution was prepared. CuCl in A solution 2 After stable dissolution and complete transparency, add solution B dropwise under magnetic stirring at 300-600 rpm until PH=12. Due to the addition of ammonia water, solution A immediately produces a blue precipitate. With the gradual addition of ammonia water under magnetic stirring, the blue precipitate dissolves rapidly, forming a stable blue Cu(NH 3 ) 4 2+ of ammonia solution. Cu(NH 3 ) 4 2+ Add 3mL of the solution to 77mL of absolute ethanol, transfer to a 100mL Teflon tube, and react at 180°C for 12h to obtain green Cu 2 (OH) 3 Cl precipitates. Repeat washing with deionized water and absolute ethanol 5 times each, and dry under vacuum at 50°C for 4 hours. The pellet was then annealed at 400°C for 2 hours. Figure 6 It is t...

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Abstract

The invention provides a method for preparing a copper oxide nano hollow ball through precursor reaction, which is characterized in that: firstly, a CuCl2 solution is taken as an initial reactant and added with ammonia to be adjusted until the pH is equal to between 10 and 14; secondly, ethanol is taken as a solvent, and Cu(NH3)4<2+> and excessive ammonia generate hydrothermal reaction at a high temperature, and then alkali Cu2(OH)3Cl precursor is obtained; and thirdly, after annealing for 2 hours at a temperature of between 300 and 500 DEG C, the copper oxide nano hollow ball is formed. The copper oxide nano hollow ball prepared has an outside diameter between 400 and 600 nanometers and a thickness between 100 and 300 nanometers, and has narrow size distribution and good dispersity. The method removes the agglomeration phenomenon brought by a curing mechanism, complex operational steps of synthesis through a template method, and pollution and interference on target materials - copper oxide. Moreover, the method has the obvious characteristics of high yield, quickness and simpleness, convenient operation, low cost, friendly environment and so on.

Description

technical field [0001] The invention relates to a preparation method of nano copper oxide hollow spheres, which can be used for preparing biomedical release, gas-sensing and electrode materials. It belongs to the field of nanomaterials. Background technique [0002] Copper oxide is a multifunctional fine inorganic material with a wide range of uses, and is widely used in important fields such as catalysis, sensors, ceramics, and superconductivity. The basis of the application of copper oxide material lies in its unique physical and chemical properties in terms of magnetism, light absorption, chemical activity, thermal resistance, catalyst and melting point. CuO can also be used as an electrode material for batteries and has attracted attention due to its excellent performance. It is also an excellent inorganic binder. The physical properties of copper oxide are affected by the shape, size and structure. In recent years, a lot of research has focused on the preparation of ...

Claims

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Application Information

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IPC IPC(8): C01G3/02
Inventor 高濂陈志涛
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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