Method for preparing ZnO/rectorite/carbon nano tube composite material

A technology of nanocomposite materials and carbon nanotubes, which is applied in the direction of catalyst activation/preparation, nanotechnology, chemical instruments and methods, etc., can solve the problems of separation and recovery difficulties, and achieve the solution of separation and recovery difficulties, simple preparation process and low price Effect

Inactive Publication Date: 2012-02-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of ZnO / rectorite / carbon nanotube nanocomposite material, the preparation process is simple, the process parameters are easy to control, the price is low, the composite material has good crystallinity and high purity, and realizes nano ZnO particle loading, which solves the problem of difficult separation and recovery in the application process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of ZnO / rectorite / carbon nanotube nanocomposite material, the steps are:

[0022] A. Preparation of zinc oxide sol: obtained by reacting hydrazine hydrate and zinc acetate with xylene and ethylene glycol as a mixed solvent at room temperature.

[0023] Weigh 2.1950 g of zinc acetate hydrate with a precision balance, and add it to 100 ml of xylene and 0.04 mol of ethylene glycol mixed solvent. After stirring rapidly, add an appropriate amount of 0.04mol hydrazine hydrate ethanol solution dropwise, and continue stirring for 1 h after the dropwise addition, the solution becomes milky white, and ZnO sol is obtained;

[0024] B. Weigh 0.4050g of pretreated rectorite powder and 0.0405g of purified carbon nanotubes into the ZnO sol, stir rapidly for 5h, let stand at room temperature for 3 or 4 or 5h and then centrifuge to remove the solid precipitate from the solution separated from

[0025] C. Wash the precipitate three times with absolute ethanol and de...

Embodiment 2

[0027] A preparation method of ZnO / rectorite / carbon nanotube nanocomposite material, the steps are:

[0028] 1. Preparation of zinc oxide sol: obtained by reacting hydrazine hydrate and zinc acetate at room temperature with xylene and ethylene glycol as a mixed solvent.

[0029] Weigh 4.3902g of zinc acetate hydrate with a precision balance, and add it to 100ml of xylene and 2.23ml of ethylene glycol mixed solvent. After rapid stirring, 1.94ml of hydrazine hydrate in ethanol (100ml) was added dropwise. After the addition was completed, stirring was continued for 1 h, and the solution turned milky white to obtain ZnO sol.

[0030] 2. Weigh 0.8139g of pretreated rectorite powder and 0.0814g of purified carbon nanotubes into the ZnO sol, stir rapidly for 5h, let stand at room temperature for 3 or 4 or 5h and then centrifuge to remove the solid precipitate from the solution separated out.

[0031] 3. Wash the precipitate three times with absolute ethanol and deionized water resp...

Embodiment 3

[0033] A preparation method of ZnO / rectorite / carbon nanotube nanocomposite material, the steps are:

[0034] 1. Preparation of zinc oxide sol: obtained by reacting hydrazine hydrate and zinc acetate at room temperature with xylene and ethylene glycol as a mixed solvent.

[0035] Weigh 6.6003g of zinc acetate hydrate with a precision balance, and add it to 100ml of xylene and 4.46ml of ethylene glycol (EG) mixed solvent. After rapid stirring, add an appropriate amount of 3.88ml of hydrazine hydrate in ethanol (100ml) dropwise, and continue stirring for 1 h after the addition, the solution becomes milky white, and ZnO sol is obtained.

[0036] 2. Weigh 1.2237g of pretreated rectorite powder and 0.1224g of purified carbon nanotubes into the ZnO sol, stir rapidly for 5h, let stand at room temperature for 3 or 4 or 5h and then centrifuge to remove the solid precipitate from the solution separated out.

[0037] 3. Wash the precipitate three times with absolute ethanol and deionize...

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Abstract

The invention discloses a method for preparing a ZnO/rectorite/carbon nano tube composite material. The method comprises the following steps of: A, preparing zinc oxide sol, namely reacting hydrazine hydrate and zinc acetate at room temperature by taking dimethylbenzene and ethylene glycol as a mixed solvent to prepare ZnO sol; B, loading ZnO by a carbon nano tube and rectorite, namely adding thepreprocessed rectorite and the purified carbon nano tube into the ZnO sol, stirring, standing at the room temperature, centrifuging, and separating solid precipitates from a solution; and C, standing, separating, washing and grinding, namely standing at the room temperature, centrifuging, separating the solid precipitates from the solution, washing the precipitates by using absolute ethanol and deionized water, calcining at the temperature of 500 DEG C in a muffle furnace, and grinding uniformly to obtain the composite material. The method has a simple process and is low in cost, process parameters are easy to control, the composite material is high in crystallinity and purity, the loading of nanometer ZnO granules is realized, and the problem of difficulty in separation and recovery in the application process is solved.

Description

technical field [0001] The invention relates to adsorption and photocatalytic composite materials, more specifically to a preparation method of ZnO / rectorite / carbon nanotube nanocomposite photocatalytic material, which can be used for adsorption and photocatalytic degradation to remove organic pollutants such as dyes in water, and is expected to For the treatment of actual wastewater. Background technique [0002] As an important photocatalyst, nano-zinc oxide has obvious surface effect and size quantization effect, and it has been confirmed that it has better photocatalytic properties than TiO under certain experimental conditions. 2 Higher catalytic performance has attracted widespread attention in recent years. Compared with TiO 2 The preparation cost is high, and nano-ZnO shows better application prospects in the photocatalytic removal of pollutants. In view of the low catalytic efficiency of a single photocatalytic semiconductor, the low utilization efficiency of visi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J37/02B82Y40/00B01J20/20B01J20/30C02F1/28C02F1/30C02F101/30
Inventor 周培疆张萌李世迁
Owner WUHAN UNIV
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