Method for preparing ZnO/ZnFe2O4 compound nano hollow sphere

A technology of znfe2o4 and hollow spheres, which is applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of complex process and high operation requirements, and achieve the effect of simple process requirements and easy operation

Inactive Publication Date: 2010-06-30
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Germany's "European Chemistry" (Chemistry-A European Journal, 2006, Volume 12, Page 2039-2047) reported the use of carbon nanospheres to adsorb metal ions on the surface layer, and at the same time synthesized a series of nano-hollow oxides as hard templates. Ball, this method is complex and

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  • Method for preparing ZnO/ZnFe2O4 compound nano hollow sphere
  • Method for preparing ZnO/ZnFe2O4 compound nano hollow sphere
  • Method for preparing ZnO/ZnFe2O4 compound nano hollow sphere

Examples

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Effect test

Embodiment 1

[0029] A kind of preparation ZnO / ZnFe 2 o 4 The method for composite nano hollow spheres, the steps are:

[0030] (1) Disperse 0.6 g of sucrose in 24 ml of water, stir and dissolve to form an aqueous solution of carbohydrate compounds;

[0031] (2) The prepared saccharide compound aqueous solution is put into a 30ml inner liner made of polytetrafluoroethylene, and the outer shell is made of steel;

[0032] (3) After sealing the reaction kettle, place it in an oven at 160°C for 20 hours, cool naturally, and centrifuge to obtain the product, wash the product three times with distilled water and absolute ethanol, and dry to obtain carbon nanospheres;

[0033] (4) Take 0.02 grams of the above-mentioned carbon nanospheres, disperse them in 20ml of ethanol, add 0.25 zinc acetate, 2mg ferric chloride and 0.25g sodium bicarbonate successively, and obtain an alcoholic solution containing carbon spheres after ultrasonic dispersion;

[0034] (5) reacting the above prepared alcohol sol...

Embodiment 2

[0043] A kind of preparation ZnO / ZnFe 2 o 4 The method for composite nano hollow spheres, the steps are:

[0044] (1) Disperse 0.12 g of starch in 24 ml of water, stir and dissolve to form an aqueous solution of carbohydrate compounds;

[0045] (2) The prepared saccharide compound aqueous solution is put into a 30ml inner liner made of polytetrafluoroethylene, and the outer shell is made of steel;

[0046] (3) After sealing the reaction kettle, place it in an oven at 180°C for 10 hours, cool naturally, and centrifuge to obtain the product, wash the product three times with distilled water and absolute ethanol, and dry to obtain carbon nanospheres;

[0047] (4) Get above-mentioned carbon nanosphere 0.5 gram, be dispersed in the methanol of 20ml, add 2g zinc chloride successively, 0.05g ferric nitrate and 4g urea, obtain the alcoholic solution containing carbon sphere after ultrasonic dispersion;

[0048] (5) reacting the above prepared alcohol solution containing carbon sphe...

Embodiment 3

[0057] A kind of preparation ZnO / ZnFe 2 o 4 The method for composite nano hollow spheres, the steps are:

[0058] (1) Disperse 0.72 g of β-cyclodextrin in 24 ml of water, stir and dissolve to form an aqueous solution of carbohydrate compounds;

[0059] (2) The prepared saccharide compound aqueous solution is put into a 30ml inner liner made of polytetrafluoroethylene, and the outer shell is made of steel;

[0060] (3) After sealing the reaction kettle, place it in an oven at 200°C for 4 hours, cool naturally, and centrifuge to obtain the product, wash the product three times with distilled water and absolute ethanol, and dry to obtain carbon nanospheres;

[0061] (4) Take 0.1 g of the above-mentioned carbon nanospheres, disperse them in 20 ml of methanol, add 1 g of zinc nitrate, 0.1 g of ferric acetate and 1 g of ammonia water in turn, and obtain an alcoholic solution containing carbon spheres after ultrasonic dispersion;

[0062] (5) reacting the alcohol solution containi...

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Abstract

The invention relates to the technical field of nano material preparation, in particular to a method for preparing ZnO/ZnFe2O4 compound nano hollow spheres. The method comprises the following steps of: (1) preparing a water solution of glucide compound; (2) placing the prepared water solution of glucide compound into a reaction container; (3) sealing the reaction container containing the prepared water solution of a glucide compound, after the heating, the reaction and the cooling of the sealed container, conduct centrifugal separation to obtain a product, washing the product with distilled water and absolute ethyl alcohol, and drying the washed product to obtain carbon spheres with the diameter of 200 nm to 4 mu m; (4) preparing an alcoholic solution containing the carbon spheres; (5) after the reaction of the prepared alcoholic solution containing the carbon spheres, conducting cooling and centrifugal separation to obtain carbon nano spheres cladded with metal hydroxides; (6) calcining the obtained arbon nano spheres clad with metal hydroxides to obtain the ZnO/ZnFe2O4 compound nano hollow spheres. The invention has the characteristics of simple operation and low technological requirements.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing ZnO / ZnFe 2 o 4 A method for compounding hollow nanospheres. Background technique [0002] Since hollow nanosphere materials are a large class of important nanostructure materials, they have many important applications in the fields of nanomedicine, drug release, and gas sensing, especially ZnO / ZnFe with fluorescent and magnetic properties. 2 o 4 Composite hollow sphere nanomaterials have high application value in many fields such as nanomedicine and optoelectronic devices. In addition, ZnFe 2 o 4 It is also a novel gas sensitive material, as a gas sensor, it can be used for the detection of chlorine gas and ethanol gas. At present, there are reports on the preparation of nano-hollow sphere materials, especially on the preparation of ZnO / ZnFe 2 o 4 There are few reports on composite hollow nanospheres. The United States "Materials Ch...

Claims

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Application Information

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IPC IPC(8): B82B3/00
Inventor 钱海生
Owner ZHEJIANG NORMAL UNIVERSITY
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