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Fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, and preparation method thereof

A photocatalyst and fluorine-doped technology, which is applied in the field of environmental purification and green energy utilization, can solve the problems of low near-infrared photocatalytic efficiency and narrow photocatalyst spectral utilization range, and achieve excellent ultraviolet-visible-near-infrared light Photocatalytic performance, the effect of improving photocatalytic performance and broadening the spectrum utilization range

Inactive Publication Date: 2020-02-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a fluorine-doped ammonium tungsten bronze photocatalyst with a simple synthesis process and a full-spectrum response and its preparation method, which solves the problems of narrow photocatalyst spectral utilization range and low near-infrared photocatalytic efficiency

Method used

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  • Fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, and preparation method thereof
  • Fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, and preparation method thereof
  • Fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, and preparation method thereof

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Embodiment 1

[0037] A method for preparing a fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, comprising the following steps:

[0038] 1) Measure 60mL of n-propanol solution into a 100mL beaker, weigh 0.1166g of ammonium acetate and 0.6g of tungsten chloride into the n-propanol solution, and sonicate until dissolved to obtain a yellow solution;

[0039] 2) Then transfer the yellow solution to the lining of a 100mL p-polyphenylene reactor, and then add 0.75mL of hydrofluoric acid solution dropwise to the solution.

[0040] 3) Seal the reactor and place it in an oven for 24 hours at 190°C, cool naturally, wash the sample three times with deionized water and ethanol, centrifuge, and dry at 60°C to prepare fluorine-doped ammonium with full spectral response Tungsten bronze photocatalyst. The resulting product is (NH 4 ) 0.33 WO 2.26 f 0.74 .

Embodiment 2

[0045] A method for preparing a fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, comprising the following steps:

[0046] (1) Measure 60mL of n-propanol solution into a 100mL beaker, weigh 0.1166g of ammonium acetate and 0.6g of tungsten chloride into the n-propanol solution, sonicate until dissolved to obtain a yellow solution, and then dissolve the yellow solution Transfer to a 100mL p-polyphenylene reactor lining, and then add 0.25mL of hydrofluoric acid solution dropwise to the solution. Seal the reactor and place it in an oven for 24 hours at 190°C, cool naturally, wash the sample three times with deionized water and ethanol, centrifuge, and dry at 60°C to prepare a fluorine-doped ammonium tungsten bronze light with full spectral response. catalyst. The resulting product is (NH 4 ) 0.33 WO 2.46 f 0.54 .

Embodiment 3

[0048] A method for preparing a fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, comprising the following steps:

[0049] (1) Measure 60mL of n-propanol solution into a 100mL beaker, weigh 0.1166g of ammonium acetate and 0.6g of tungsten chloride into the n-propanol solution, sonicate until dissolved to obtain a yellow solution, and then dissolve the yellow solution Transfer to a 100mL p-polyphenylene reactor lining, and then add 1mL of hydrofluoric acid solution dropwise to the solution. Seal the reactor and place it in an oven for 24 hours at 190°C, cool naturally, wash the sample three times with deionized water and ethanol, centrifuge, and dry at 60°C to prepare a fluorine-doped ammonium tungsten bronze light with full spectral response. catalyst. The resulting product is (NH 4 ) 0.33 WO 2.2 f 0.8 .

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Abstract

The invention discloses a fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response, and a preparation method thereof. The method comprises: adding tungsten chloride and ammonium acetate into an n-propanol solution, and ultrasonically dissolving to obtain a solution A; adding a hydrofluoric acid solution into the solution A to obtain a solution B, and reacting at 180-220 DEG C for 12-72 h; and naturally cooling the reaction product, washing, and drying to obtain the fluorine-doped ammonium tungsten bronze photocatalyst with full-spectrum response. According to the invention, the rhodamine B degradation rate of the catalyst is greater than 35% after ultraviolet light irradiation for 180 min, the rhodamine B degradation rate of the catalyst is greater than 90% after visible light irradiation for 120 min, the rhodamine B degradation rate of the catalyst is greater than 80% after near-infrared light irradiation for 180 min, and the photocatalyst still has high degradation rate and stable activity after a photocatalysis experiment is cycled five times, and can be stably used for a long time; and the method is simple to operate, wide in raw material source, low incost and high in pollutant degradation rate.

Description

technical field [0001] The invention belongs to the fields of environmental purification and green energy utilization, and relates to a full-spectrum corresponding fluorine-doped ammonium tungsten bronze photocatalyst and a preparation method thereof. Background technique [0002] With the rapid development of human society in the 21st century, great progress has been made in both science and technology and humanities. However, the problems of contemporary resource depletion and ecological environment deterioration have become increasingly prominent, posing severe challenges to human beings. Sustainable development has become the path that contemporary society must choose, and the two major challenges facing sustainable development are energy issues and environmental issues. A photocatalyst is a chemical substance that can change the rate of a chemical reaction under the radiation of light, but does not itself participate in the reaction. Photocatalysts can not only make fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/39
Inventor 高强吴笑梅康毅
Owner SOUTH CHINA UNIV OF TECH
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