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Method for nanometer cupric oxide through two-step solid phase synthesis

A nano-copper oxide, solid-phase synthesis technology, applied in the field of nano-materials, can solve the problems of nano-copper oxide dispersion, difficult to disperse soft aggregate nanoparticles, etc., achieve the effects of no three wastes discharge, improve stability, and reduce synthesis costs

Inactive Publication Date: 2009-09-30
SHANDONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adding an inert carrier, the prepared nano-copper oxide mixture is dispersed, which solves the problem of nano-copper oxide dispersion and improves the stability of nano-copper oxide
The final by-products of the two-step solid-phase synthesis are non-toxic to humans and animals, and the mixture does not need to be washed and separated, which solves the problem of soft aggregates that are difficult to disperse due to the attraction of van der Waals force and liquid bridge force in the liquid phase and the drying process. Nanoparticles form hard aggregates due to the surface tension of the liquid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of nano-copper oxide mixture

[0017] Copper sulfate pentahydrate, sodium chloride, and kaolin were pulverized by a universal pulverizer and sieved with a 325-mesh sieve, and mixed with a forced mixer in a molar ratio of 1:2:2, and the reaction was completed. The first step is the preparation of the precursor .

[0018] Reaction chemical equation:

[0019] CuSO 4 ·5H 2 O+2NaCl=CuCl 2 +Na 2 SO 4 +5H 2 o

[0020] Crush the sodium hydroxide with a universal pulverizer and sieve it with a 325-mesh sieve, add sodium hydroxide according to the molar ratio of cupric chloride and sodium hydroxide at a ratio of 1:2, mix with a forced mixer, and the reaction is completed. Preparation of two-step nano-copper oxide.

[0021] Reaction chemical equation:

[0022] CuCl 2 +2NaOH=CuO+2NaCl+H 2 o

[0023] The mixture was dried at 50° C. for 2 hours to obtain the nano-copper oxide mixture feed additive.

Embodiment 2

[0025] Preparation of pure nano-copper oxide

[0026] Copper sulfate pentahydrate and sodium chloride were pulverized by a universal pulverizer and sieved with a 325-mesh sieve, mixed with a forced stirring mixer at a molar ratio of 1:3-4, and the reaction completed the first step of precursor preparation. Crush the sodium hydroxide with a universal pulverizer and sieve it with a 325-mesh sieve. After adding sodium hydroxide in the ratio of 1:2, the molar ratio of cupric chloride and sodium hydroxide is mixed with a forced mixer, and the reaction is completed. The second step is the preparation of nano-copper oxide. After the mixture was heat-treated at 200° C. for 2 hours, it was washed and centrifuged. Dry at 105°C for 2 hours to obtain pure nano-copper oxide.

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Abstract

The invention relates to a method for nanometer cupric oxide through two-step solid phase synthesis, which belongs to the technical field of nano materials and comprises the following steps: obtaining a nanometer cupric chloride precursor by a first step solid phase reaction; decreasing activation energy of a second step solid phase reaction; controlling nucleation rate; and realizing the control of the size of grain diameter of the nanometer cupric oxide, wherein the grain diameter of the nanometer cupric oxide is controlled to be below 30 nm; and the nanometer cupric oxide is dispersed uniformly. The synthetic process of the process has the advantages of environmental protection, less energy consumption, no discharge of three wastes, and no pollution; and by adding an inert carrier, the stability of the nanometer cupric oxide is improved, and the nanometer cupric oxide is dispersed uniformly. A final byproduct of the two-step solid phase synthesis is non-hazardous to human and animals, and a mixture needs not washing and separating so as to solve the problems of dispersion and aggressiveness of the nano materials in the process of washing and drying. The method provides technical support for fundamental research for promoting the nanometer cupric oxide as a feed additive, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a two-step solid-phase synthesis method of nanometer copper oxide, which belongs to the technical field of nanomaterials. Background technique [0002] Copper is one of the essential trace elements for animals. It has the functions of hematopoiesis, metabolism, growth and reproduction, maintenance of production performance, and enhancement of body resistance. High copper also plays an antibacterial role, promotes the secretion of growth hormone, increases feed intake and improves Production performance and other aspects have an immeasurable role. In the feeding standards of pigs and chickens, it is generally stipulated that 6-8mg of copper per kilogram of ration is added, and the addition of high-dose copper is 20-40 times the normal amount. Many domestic and foreign experiments have shown that 150-250mg of copper is added to rations / kg (using copper sulfate as a copper source) has the effect of promoting piglet growth and im...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82B3/00
Inventor 孙金全朱连勤崔洪芝王积森陈蕴博
Owner SHANDONG UNIV OF SCI & TECH
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