Preparation method of porous WO3/C nanosheet mesoporous composite photocatalyst

A technology of nanosheets and composite light, which is applied in the field of photocatalysis and photoelectrochemical materials, can solve the problems of insufficient photoelectric performance and low photocatalytic efficiency, and achieve the effect of good light absorption performance

Inactive Publication Date: 2020-03-27
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a porous WO 3 / C nanosheet mesoporous composite photocatalyst preparation method to solve the existing WO 3 The technical problems of insufficient photoelectric performance and low photocatalytic efficiency of nanosheet array materials

Method used

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  • Preparation method of porous WO3/C nanosheet mesoporous composite photocatalyst
  • Preparation method of porous WO3/C nanosheet mesoporous composite photocatalyst
  • Preparation method of porous WO3/C nanosheet mesoporous composite photocatalyst

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Embodiment 1

[0021] A kind of porous WO 3 The preparation method of / C nanosheet mesoporous composite photocatalyst comprises the following steps:

[0022] 0.1gWO 3 2H 2 O / n-propylamine inorganic / organic layered hybrids are added into the porcelain boat, and then the porcelain boat is put into the tube furnace and nitrogen gas is introduced. Set the heating rate to 10°C / min, the heating time to 40min, heat to 400°C, and the holding time to 2h. After the reaction, let it cool down to room temperature naturally, and take out the porous WO 3 / C nanosheet mesoporous composite photocatalyst material.

[0023] Porous WO in this embodiment 3 / C nanosheet mesoporous composite photocatalyst material XRD patterns, such as figure 1 Shown; Porous WO 3 / C nanosheet mesoporous composite photocatalyst material TEM images, such as figure 2 Shown; Porous WO 3 SEM images of / C nanosheet mesoporous composite photocatalyst materials at different magnifications, such as image 3 Shown, among them (a...

Embodiment 2

[0025] A kind of porous WO 3 The preparation method of / C nanosheet mesoporous composite photocatalyst comprises the following steps:

[0026] 0.5gWO 3 2H 2 O / n-butylamine inorganic / organic layered hybrids are added into the porcelain boat, and then the porcelain boat is put into the tube furnace and nitrogen gas is introduced. Set the heating rate to 25°C / min, the heating time to 40min, heat to 600°C, and the holding time to 4h. After the reaction, let it cool down to room temperature naturally, and take out the porous WO 3 / C nanosheet mesoporous composite photocatalyst material.

Embodiment 3

[0028] A kind of porous WO 3 The preparation method of / C nanosheet mesoporous composite photocatalyst comprises the following steps:

[0029] 0.2gWO 3 2H 2 O / n-octylamine inorganic / organic layered hybrids are added to the porcelain boat, and then the porcelain boat is put into the tube furnace and nitrogen gas is introduced. Set the heating rate to 15°C / min, the heating time to 40min, heat to 500°C, and the holding time to 3h. After the reaction, let it cool down to room temperature naturally, and take out the porous WO 3 / C nanosheet mesoporous composite photocatalyst material.

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Abstract

The invention provides a preparation method of a porous WO3/C nanosheet mesoporous composite photocatalyst. The preparation method comprises the following steps: adding an organic amine intercalated WO3.2H2O hybrid into a porcelain boat, putting the porcelain boat into a tubular furnace, introducing nitrogen, raising the temperature, keeping the temperature to react, and naturally cooling the obtained reaction product to room temperature after the reaction is finished in order to obtain the porous WO3/C nanosheet mesoporous composite photocatalyst material. The porous WO3/C nanosheet mesoporous composite photocatalyst prepared by the method is a mesoporous structure composite material formed by C and porous WO3 nanosheets, has a good light absorption performance and a large specific surface area, can efficiently convert nitrogen into nitrate radicals under illumination, and has good photocatalytic oxidation activity.

Description

technical field [0001] The technical field of the present invention is the technical field of photocatalysis and photoelectrochemical materials, particularly porous WO 3 / C nanosheet mesoporous composite photocatalyst preparation method. Background technique [0002] Tungsten trioxide is an n-type semiconductor material with a wide band gap. The band gap at room temperature is 2.63eV. It can absorb visible light and ultraviolet light below 500nm. It is used in electrochromic, gas sensor, photocatalysis and photoelectric conversion fields. It has important application value. Compared with traditional semiconductor materials, nano-tungsten trioxide has a narrower band gap, good photoelectric response performance under visible light conditions, low price, stable performance, harmless and non-toxic, and can be used as a photocatalyst to utilize sunlight Degrade organic pollutants in water and waste gas in the air, high efficiency, energy saving, clean and pollution-free. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01J35/10B01J37/08
CPCB01J23/30B01J35/004B01J35/1009B01J37/084B01J35/1052
Inventor 吕慧丹陈丹杨刘勇平米喜红李时庆班如静
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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