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Tungsten trioxide nano-sheet prepared by hydrothermal method and application of tungsten trioxide nano-sheet

A technology of tungsten trioxide and nanosheets, applied in tungsten oxide/tungsten hydroxide, nanotechnology, nanotechnology, etc., to achieve good reproducibility, convenient mass production, and good chemical stability

Inactive Publication Date: 2013-04-10
江苏海能动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many studies on the electrical properties, gas-sensing properties and photocatalytic properties of tungsten trioxide nanoparticles, but the treatment of tetracycline antibiotic wastewater with nano-tungsten trioxide has not been reported.

Method used

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  • Tungsten trioxide nano-sheet prepared by hydrothermal method and application of tungsten trioxide nano-sheet
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  • Tungsten trioxide nano-sheet prepared by hydrothermal method and application of tungsten trioxide nano-sheet

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Experimental program
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Effect test

Embodiment 1

[0029] A kind of tungsten trioxide (WO 3 ) The preparation method of nanosheets is carried out according to the following steps:

[0030] A. Dilute concentrated nitric acid with a concentration of 65% into 30 mL of dilute nitric acid with a concentration of 10%;

[0031] B. Weigh 0.5 g Na 2 WO 4 2H 2 O, add 5 mL of deionized water and stir to mix well to form Na 2 WO 4 2H 2 O transparent solution;

[0032] C, the Na 2 WO 4 2H 2 O transparent solution was added in the 30 mL dilute nitric acid solution described in step A, stirred for 30 min, accompanied by the color of the precipitate turning from white to light yellow;

[0033] D. Transfer the mixed system obtained in step C to a polytetrafluoroethylene-lined reactor, raise the temperature to 140° C. for 18 h, and cool naturally to obtain a hydrothermal product;

[0034] E, centrifuging the hydrothermal product obtained in step D, washing with deionized water and ethanol three times respectively;

[0035] F. Dry th...

Embodiment 2

[0043] A kind of tungsten trioxide (WO 3 ) The preparation method of nanosheets is carried out according to the following steps:

[0044] A. Dilute concentrated nitric acid with a concentration of 65% into 30 mL of dilute nitric acid with a concentration of 10%;

[0045] B. Weigh 0.6 g Na 2 WO 4 2H 2 O, add 10 mL of deionized water, stir to mix evenly, and form Na 2 WO 4 2H 2 O transparent solution;

[0046] C, the Na 2 WO 4 2H 2 O solution was added in the 30 mL dilute nitric acid solution described in step A, stirred for 30 min, and the color of the precipitate changed from white to light yellow;

[0047] D. Transfer the mixed system obtained in step C to a polytetrafluoroethylene-lined reaction kettle, raise the temperature to 200° C. for 30 h, and cool naturally to obtain a hydrothermal product;

[0048] E, centrifuging the hydrothermal product obtained in step D, washing with deionized water and ethanol three times respectively;

[0049] F. Dry the centrifuged...

Embodiment 3

[0051] A kind of tungsten trioxide (WO 3 ) The preparation method of nanosheets is carried out according to the following steps:

[0052] A. Dilute concentrated nitric acid with a concentration of 65% into 30 mL of dilute nitric acid with a concentration of 12%;

[0053] B. Weigh 0.5 g Na 2 WO 4 2H 2 O, add 5 mL of deionized water and stir to mix well to form Na 2 WO 4 2H 2 O transparent solution;

[0054] C, the Na 2 WO 4 2H 2 O solution was added in the 30 mL dilute nitric acid solution described in step A, stirred for 30 min, and the color of the precipitate changed from white to light yellow;

[0055] D. Transfer the mixed system obtained in step C to a polytetrafluoroethylene-lined reactor, raise the temperature to 140° C. for 30 h, and cool naturally to obtain a hydrothermal product;

[0056] E, centrifuging the hydrothermal product obtained in step D, washing with deionized water and ethanol three times respectively;

[0057] F. Dry the centrifuged product i...

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Abstract

The invention belongs to the technical field of preparation of inorganic nano-materials and environmental materials, relates to a preparation method of tungsten trioxide nano-sheets,, in particular to a tungsten trioxide nano-sheet prepared by hydrothermal method and application of the tungsten trioxide nano-sheet. The invention aims to provide a preparation method of tungsten trioxide nano-sheets, which has a simple process and reduces the synthesis temperature. The preparation of tungsten trioxide nano-sheets with relatively homogeneous patterns through liquid-phase hydrothermal reaction at a low temperature is implemented by stirring mixing a dilute nitric acid solution and a sodium tungstate solution to form tungstic acid precipitates and then performing hydrothermal method. Tungsten trioxide (WO3) prepared throughsimple hydrothermal synthesis reaction has a sheet-like nano-scale structure pattern and is advantageous in good chemical stability. The method has a simple process and good reproducibility. All used raw materials are inorganic compounds which are cheap and abundant and conform to the requirement for environmental friendliness. The method does not need calcination and other pretreatment processes at high temperatures and reduces the synthesis temperature, so as to reduce the energy consumption and reaction cost and to facilitate the mass production.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanometer materials and environmental materials, and relates to a preparation method of tungsten trioxide nanosheets, in particular to a hydrothermal method for preparing tungsten trioxide nanosheets and its application. Background technique [0002] With the development of economy and society, environmental pollution, especially water pollution, has become a major challenge for human beings. Antibiotic wastewater accounts for a large proportion of current water pollution. Because it is difficult to degrade and easy to accumulate in the environment, it is harmful to biological It is highly toxic to humans and seriously threatens the ecological environment and human health. Traditional methods for removing antibiotics are greatly limited in practical applications due to high operating costs, low efficiency, harsh treatment conditions, and even secondary treatment difficulties. [...

Claims

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Application Information

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IPC IPC(8): C01G41/02B82Y30/00B01J23/30
Inventor 施伟东张格红关卫省蒋金辉卢昶雨张坤
Owner 江苏海能动力科技有限公司
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