ZnO nano powder in sheet uniform porous structure as well as preparation method and applications thereof

A porous structure and nano-powder technology, which is applied in the direction of nanotechnology, structural parts, zinc oxide/zinc hydroxide, etc., can solve the problems that the equipment cannot achieve large-scale production, long production cycle, and promotion restrictions, and achieve low equipment requirements , Good product quality, uniform distribution of holes

Inactive Publication Date: 2011-06-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Although these methods have synthesized nano-ZnO powders with a porous structure, they have the characteristics of high energy consumption, long production cycle, or the inability of equipment to achieve large-scale production, which limits their promotion.

Method used

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  • ZnO nano powder in sheet uniform porous structure as well as preparation method and applications thereof
  • ZnO nano powder in sheet uniform porous structure as well as preparation method and applications thereof
  • ZnO nano powder in sheet uniform porous structure as well as preparation method and applications thereof

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Embodiment 1

[0031] (1) Dissolve the sodium carbonate raw material in water, prepare 0.2M sodium carbonate solution, put 25mL of the sodium carbonate solution in a flask, stir it magnetically under a constant temperature water bath condition of 90°C, and continuously apply a 50KV external electric field to the reaction vessel at the same time, Add 0.1M zinc nitrate hexahydrate solution dropwise to the reaction vessel, and after 2 hours of reaction, a milky white suspension is obtained;

[0032] (2) the milky white suspension obtained in step (1) is washed 5 times with deionized water, centrifuged, and dried to obtain the basic zinc carbonate precursor;

[0033] (3) Calcining the basic zinc carbonate precursor obtained in step (2) at 400° C. for 3 h to obtain ZnO nano-powder with sheet-like uniform porous structure.

Embodiment 2

[0035] (1) Sodium carbonate raw material is dissolved in water, the sodium carbonate solution of preparation 0.4M, get this sodium carbonate solution 25mL in the flask, under the constant temperature water-bath condition of 90 ℃, magnetic force stirs, and continuously applies 10KV external electric field to reaction container simultaneously, Add 0.3M zinc nitrate hexahydrate solution dropwise to the reaction vessel, and after 2 hours of reaction, a milky white suspension is obtained;

[0036] (2) the milky white suspension obtained in step (1) is washed 5 times with ethanol, centrifuged, and dried to obtain the basic zinc carbonate precursor;

[0037] (3) Calcining the basic zinc carbonate precursor obtained in step (2) at 350° C. for 3 hours to obtain ZnO nanopowder with sheet-like uniform porous structure.

Embodiment 3

[0039] (1) Sodium carbonate raw material is dissolved in water, the sodium carbonate solution of preparation 0.6M, get this sodium carbonate solution 25mL in the flask, under the constant temperature water-bath condition of 80 ℃, magnetic force stirs, and continuously applies 50KV external electric field to reaction container simultaneously, Add 0.5M zinc nitrate hexahydrate solution dropwise to the reaction vessel, and after reacting for 2 hours, a milky white suspension is obtained;

[0040] (2) the milky white suspension obtained in step (1) is washed 5 times with deionized water and ethanol, centrifuged, and dried to obtain the basic zinc carbonate precursor;

[0041] (3) Calcining the basic zinc carbonate precursor obtained in the step (2) at 300° C. for 3 hours to obtain ZnO nano powders with sheet-like uniform porous structure.

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Abstract

The invention discloses ZnO nano powder in a sheet uniform porous structure as well as a preparation method and applications thereof. The preparation method comprises the following steps of: adding a sodium carbonate solution to a reaction container in a thermostatic water bath, dripping a zinc nitrate solution in the sodium carbonate solution, continuously applying an external electric field of 50kv to the reaction container and stirring at a reaction temperature of 80-90 DEG C; and keeping the solution water bath temperature for 2h after dripping, separating, washing and drying the muddy solution obtained after the temperature preservation is finished to obtain a basic zinc carbonate precursor and roasting at 300-400 DEG C for 2-3h to obtain ZnO nano powder in the sheet uniform porous structure. The invention belongs to a hexagonal system, has the advantages of great specific surface area, high purity, good product quality without ZnO in other shapes, stable performance, constant performance when being arranged in air for a long time, simple process, low manufacture cost, low equipment requirement, rapidness of operation and mass production suitability.

Description

technical field [0001] The invention relates to the field of inorganic nanometer materials and preparation techniques, in particular to ZnO nanometer powder with sheet-like uniform porous structure and its preparation method and application. Background technique [0002] Nano zinc oxide (ZnO) particle size is between 1-100nm. It is a new type of high-function fine inorganic product facing the 21st century. It exhibits many special properties, such as non-migration, fluorescence, piezoelectricity, absorption and the ability to scatter ultraviolet rays. Utilizing its wonderful properties in light, electricity, magnetism, sensitivity, etc., it can be used to manufacture gas sensors, phosphors, varistors, ultraviolet shielding materials, image recording materials, piezoelectric materials, piezoresistors, high-efficiency catalysts, magnetic materials and plastic films Wait. At room temperature, its forbidden band width is 3.37eV, and the exciton binding energy is as high as 60m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02H01M4/48B82Y40/00
CPCY02E60/12Y02E60/10
Inventor 梁秀娟胡小芳翁星星胡大为嵇海旭
Owner SOUTH CHINA UNIV OF TECH
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