Method for preparing highly ordered tungsten trioxide nano-rod

A tungsten trioxide and nanorod technology, applied in tungsten oxide/tungsten hydroxide and other directions, can solve the problems of difficult growth, high cost, unfavorable tungsten trioxide nanorod material, etc., and achieve good repeatability.

Inactive Publication Date: 2010-08-11
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, it is quite difficult to synthesize high-purity tungsten trioxide nanorods, especially on conductive glass.
Moreover, the synthesis of high-purity tungsten trioxide nanorods generally adopts chemical vapor deposition in industrialization, but this process has high costs and is not conducive to large-scale synthesis of tungsten trioxide nanorods.

Method used

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Examples

Experimental program
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Embodiment 1

[0011] Mix 25 milliliters of deionized water and 25 milliliters of commercially available concentrated hydrochloric acid with a weight percentage of 36.5% to achieve a mixed solution with a total volume of 50 milliliters; after stirring at room temperature for 5 minutes, add 0.2 grams of tungsten hexachloride; continue After stirring for 5 minutes, transfer to a 100 ml high-temperature reaction kettle (lined with tetrafluoroethylene); put the high-temperature reaction kettle in a constant temperature drying oven, and cool it naturally after hydrothermal reaction at a constant temperature of 120°C for 10 hours; Take it out from the high-temperature reaction kettle, wash it with deionized water, and then dry it in a drying oven. The obtained nanorods have a diameter of 80-90 nanometers and a length of 3-4 microns.

Embodiment 2

[0013] Mix 25 milliliters of deionized water and 25 milliliters of commercially available concentrated hydrochloric acid with a weight percentage of 38% to achieve a mixed solution with a total volume of 50 milliliters; after stirring at room temperature for 5 minutes, add 0.39 grams of tungsten hexachloride; continue After stirring for 5 minutes, transfer to a 100 ml high-temperature reaction kettle (lined with tetrafluoroethylene); place the high-temperature reaction kettle in a constant temperature drying oven, and cool it naturally after hydrothermal reaction at a constant temperature of 150°C for 20 hours; Take it out from the high-temperature reaction kettle, wash it with deionized water, and then dry it in a drying oven. The obtained nanorods have a diameter of 90-100 nanometers and a length of 5-6 microns. The XRD pattern of the prepared tungsten trioxide nanorods is shown in figure 1 , the SEM image of the side of the prepared tungsten trioxide nanorods is shown in ...

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Abstract

The invention discloses a method for preparing a highly ordered tungsten trioxide nano-rod. The method comprises the following steps: mixing 0 to 50ml of deionized water and 0 to 50ml of 36.5-38 percent commercial concentrated hydrochloric acid to obtain mixed solution with total volume of 50ml; adding 0.2 to 4g of tungsten hexachloride into the mixed solution after the mixed solution is stirred for 5 minutes at normal temperature; moving the mixed solution to a 100ml high-temperature reaction kettle after the mixed solution is continuously stirred for 5 minutes; placing the conductive surface of clean conductive glass upwards in the high-temperature reaction kettle; placing the high-temperature reaction kettle in a thermostatic drying oven to perform a hydro-thermal reaction for 4 to 20 hours at constant temperature between 100 and 180 DEG C, naturally cooling the high-temperature reaction kettle; and taking the conductive glass out of the high-temperature reaction kettle, and drying the conductive glass in the drying oven after the conductive glass is washed by the deionized water. The method has the advantages of simple process and good repeatability, and the prepared tungsten trioxide nano-rod has the diameter between 80 and 100 nanometers and the length between 3 and 6 microns.

Description

technical field [0001] The invention relates to a preparation method of highly ordered tungsten trioxide nanorods. Background technique [0002] Semiconductor photocatalysis is closely related to many current problems related to environment and energy. Semiconductor photocatalysis In addition to being used in photocatalytic water to provide clean and recyclable hydrogen energy, some semiconductor materials can also degrade polluting organic and inorganic substances in air and water by using solar energy. Titanium dioxide has become a widely used high-efficiency photocatalytic material because of its stable performance and low price. However, because of the wide bandgap of TiO2, in practice TiO2 utilizes only a fraction of 3-5% of the entire spectrum of solar UV light when used as a photocatalyst. Therefore, the development of new and efficient photocatalytic materials has become an urgent and challenging issue. Compared with titanium dioxide, tungsten trioxide has a small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/02
Inventor 王海李惠敏
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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