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Method for preparing zinc oxide micro-nano tooth-shaped rods and zinc oxide micro-nano pine cones

A zinc oxide, micro-nano technology, applied in the field of preparation of micro-nano zinc oxide, can solve the problems of high cost, high reaction temperature, complex equipment, etc., and achieve the effects of pure crystallization, simple operation and good reproducibility

Inactive Publication Date: 2014-05-07
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention solves the technical problems of complex equipment, high cost and high reaction temperature in the existing preparation method for preparing zinc oxide micro-nano structure, and provides a method for preparing zinc oxide micro-nano tooth-shaped rods and zinc oxide micro-nano pine cones

Method used

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  • Method for preparing zinc oxide micro-nano tooth-shaped rods and zinc oxide micro-nano pine cones
  • Method for preparing zinc oxide micro-nano tooth-shaped rods and zinc oxide micro-nano pine cones
  • Method for preparing zinc oxide micro-nano tooth-shaped rods and zinc oxide micro-nano pine cones

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specific Embodiment approach 1

[0019] Specific embodiment one: the method for preparing zinc oxide micro-nano toothed rods in this embodiment is as follows:

[0020] Step 1: Slowly add 25ml of an aqueous solution of zinc nitrate hexahydrate with a concentration of 0.06mol / L to 25ml of an aqueous solution of hexamethylenetetramine with a concentration of 0.06mol / L, stir while adding, and then add 25ml of a concentration of Be the sodium hydroxide aqueous solution of 1.5mol / L, obtain mixed solution;

[0021] Step 2: Stir the mixed solution on a magnetic stirrer at a speed of 300 rpm for 3 to 5 minutes to obtain a transparent and clear solution;

[0022] Step 3: Pour the clarified solution into a stainless steel reaction kettle lined with polytetrafluoroethylene, then place the reaction kettle in a vacuum drying oven at 120°C, keep it warm for 14-18 hours, then take out the reaction kettle and air-cool it at room temperature for 1 hour , take out the clear solution, add distilled water to dilute according to ...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that the holding time in step 3 is 15 hours. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: This embodiment is different from Embodiment 1 in that the holding time in step 3 is 16 hours. Others are the same as in the first embodiment.

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Abstract

The invention discloses a method for preparing zinc oxide micro-nano tooth-shaped rods and zinc oxide micro-nano pine cones and relates to a method for preparing micro-nano zinc oxide. The invention provides a method for preparing a ZnO micro-nano material with a new morphology by a simple low temperature hydrothermal synthesis process. The method comprises the following steps of: dropwise adding aqueous solution of zinc nitrate hexahydrate into aqueous solution of hexamethylenetetramine; dropwise adding aqueous solution of sodium hydroxide; stirring; then pouring the mixture into a reaction kettle to carry out heat preservation; diluting; separating; and then drying centrifuged white precipitates and uniformly grinding the dried white precipitates to obtain the zinc oxide micro-nano tooth-shaped rods and the zinc oxide micro-nano pine cones. According to the invention, the micro-nano tooth-shaped rods have the average diameter of 1 to 2mum and the length of 5 to 6mum; the micro-nano pine cones have the average diameter of 1.5mum and the average length of 2mum; and the micro-nano tooth-shaped rods and the micro-nano pine cones are purely crystallized, have uniform and consistent morphology and close sizes and can be used in the fields of photocatalysis, a gas sensitive sensor, a humidity sensitive sensor, a piezoresistor and a transparent electrode.

Description

technical field [0001] The invention relates to a preparation method of micronano zinc oxide. Background technique [0002] The structure and morphology of micro-nano materials have a great influence on the properties and applications of micro-nano materials. The preparation of micro-nano materials with specific structures has important academic significance and application value for the development of new fields of properties of micro-nano materials. Among numerous micro-nano materials, the micro-nano structure of ZnO has received extensive attention. Zinc oxide with micro-nano structure has attracted much attention due to its large specific surface area and good magnetic, optical, and electrical properties. It is expected to be used in many fields such as photocatalysis, gas sensors, humidity sensors, piezoresistors, and transparent electrodes. with broadly application foreground. [0003] At present, the preparation methods of ZnO micro-nanostructure mainly include che...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y40/00
Inventor 郭二军张建交王丽萍姜文勇岳红彦
Owner HARBIN UNIV OF SCI & TECH
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