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Preparation method and application of double-function micro-nano hierarchical structural zinc oxide power

A hierarchical structure, zinc oxide powder technology, applied in chemical instruments and methods, zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problems of complex experimental operation, high reaction temperature, difficult to obtain performance, etc., and achieve cheap and easy raw materials. It has the advantages of simple preparation process and narrow particle size distribution.

Inactive Publication Date: 2011-06-22
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention is to avoid the shortcomings of the above-mentioned prior art, and to provide a method for preparing zinc oxide powder with a dual-functional micro-nano hierarchical structure that can be synthesized in large quantities in a low-temperature solution phase and Its application is to overcome the shortcomings of high reaction temperature, complicated experimental operation and difficulty in obtaining nano-zinc oxide with excellent performance in the existing method

Method used

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  • Preparation method and application of double-function micro-nano hierarchical structural zinc oxide power
  • Preparation method and application of double-function micro-nano hierarchical structural zinc oxide power
  • Preparation method and application of double-function micro-nano hierarchical structural zinc oxide power

Examples

Experimental program
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Effect test

Embodiment 1

[0028] 2 mmol of anhydrous zinc chloride ZnCl 2 and 10 mmol of sodium hydroxide NaOH were dissolved in 30 mL of deionized water. Put the solution in a 60mL capped glass bottle and keep the temperature at 80°C for 12 hours; the obtained white precipitate was centrifuged with a centrifuge, washed 4 times with deionized water, and then dried in a drying oven at 80°C for 12 hours to obtain high photocatalysis Active ZnO powder with micro-nano hierarchical structure.

[0029] Disperse 0.2090g of the prepared ZnO powder and 0.0595g of stearic acid in 20mL of ethanol at a molar ratio of 100:8, mix them uniformly by ultrasonic treatment, and evaporate the absolute ethanol to dryness at 50°C to obtain superhydrophobic Sexual ZnO nano powder coating.

Embodiment 2

[0031] Weigh 2mmol of ZnCl 2And the NaOH of 8mmol; Operating procedure is the same as embodiment 1, reacts at 100 ℃ of constant temperature 8 hours, can obtain the ZnO nano-powder of the micro-nano hierarchical structure of high photocatalytic activity equally; The same method as in Example 1 was modified to prepare the coating, so that the molar content of stearic acid in the coating was 7%, to obtain a superhydrophobic ZnO nano-powder coating.

Embodiment 3

[0033] ZnSO 4 ·7H 2 O replaces ZnCl in Example 1 2 As zinc source, take ZnSO 4 ·7H 2 The mol ratio of O and NaOH is 1: 5, and operating procedure is identical with embodiment 1, reacts at 100 ℃ of constant temperature 8 hours, obtains the ZnO nano-powder of the micro-nano hierarchical structure of high photocatalytic activity; Then use gained ZnO nano-powder with Stearic acid is modified by the method in Example 1, so that the molar content of stearic acid in the coating is 8%, to obtain a superhydrophobic ZnO nanometer powder coating.

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Abstract

The invention discloses a preparation method and application of double-function micro-nano hierarchical structural zinc oxide power. The preparation method is characterized by comprising the following steps of: dissolving water-soluble zinc salt and sodium hydroxide into an aqueous solvent according to the mole ratio of 1:4-1:7 to obtain a solution; reacting the obtained solution at 80-100 DEG C under a sealed condition to generate white precipitates; and separating, washing and drying the white precipitates to obtain the micro-nano hierarchical structural zinc oxide power. The preparation method has a simple process and a low cost; and in addition, prepared nano-structural zinc oxide has higher photocatalytic activity and superhydrophobic property and good stability.

Description

technical field [0001] The invention belongs to the technical field of preparation of oxide semiconductor nanomaterials, and in particular relates to a preparation method and application of dual-functional micro-nano hierarchical structure zinc oxide powder with high catalytic activity and superhydrophobicity. Background technique [0002] As an important semiconductor material, nano-zinc oxide ZnO has a wide range of applications in nano-lasers, piezoelectric sensors, solar cells, gas sensors, photocatalysis and other fields. How to realize the preparation method with simple process, low cost, high yield, good performance and mass production is the first problem to be faced. Among the currently developed nano-ZnO material synthesis methods, the vapor phase deposition method is widely used. This type of method can prepare nano-ZnO materials with good crystallinity and high quality, but the process is complicated, the synthesis temperature is high, and the cost is high. Dispo...

Claims

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Application Information

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IPC IPC(8): C01G9/02C09D1/00C09D7/12B01J23/06B01J35/02B82Y40/00
Inventor 李本侠王艳芬刘同宣
Owner ANHUI UNIV OF SCI & TECH
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