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Preparation method and application of bismuth oxychloride photocatalyst

A bismuth oxychloride and photocatalyst technology, applied in the field of photocatalytic materials, can solve the problems of complex preparation process, difficulty in batch production and application, high energy consumption, etc., and achieve the effect of green and simple preparation process, mass production and stable chemical properties

Pending Publication Date: 2022-07-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problems existing in the existing technology are that the preparation process is complicated, the energy consumption is high, and it is difficult to achieve mass production and application.

Method used

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  • Preparation method and application of bismuth oxychloride photocatalyst
  • Preparation method and application of bismuth oxychloride photocatalyst
  • Preparation method and application of bismuth oxychloride photocatalyst

Examples

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Effect test

Embodiment 1

[0029] A method for preparing a bismuth oxychloride photocatalyst according to an embodiment of the present invention includes the following steps: weighing 4 mmol of bismuth nitrate pentahydrate and 4 mmol of sodium chloride in a beaker, adding 80 mL of deionized water, and fully stirring at room temperature for 20 min; The mixed solution was transferred to a 100 mL polytetrafluoroethylene reactor for thermal reaction, and the reaction conditions were 150 °C for 12 h; after the reaction was completed, it was cooled to room temperature for suction filtration; after suction filtration, the filter residue was washed three times with ethanol and deionized water, respectively, and the sample Place at 60°C and dry for 12h to obtain bismuth oxychloride powder; irradiate the obtained bismuth oxychloride powder under a 6W UV lamp for 2h to obtain a bismuth oxychloride photocatalyst with surface defects, denoted as OVs-BOC-1.

Embodiment 2

[0031] A method for preparing a bismuth oxychloride photocatalyst according to an embodiment of the present invention includes the following steps: weighing 4 mmol of bismuth nitrate pentahydrate and 4 mmol of sodium chloride in a beaker, adding 80 mL of deionized water, and fully stirring at room temperature for 20 min; The mixed solution was transferred to a 100 mL polytetrafluoroethylene reaction kettle for thermal reaction, and the reaction conditions were 150 °C for 12 h; after the reaction was completed, it was cooled to room temperature for suction filtration; Dry at 60°C for 12 hours to obtain bismuth oxychloride powder; irradiate the obtained bismuth oxychloride powder under a 6W UV lamp for 4 hours to obtain a bismuth oxychloride photocatalyst with surface defects, denoted as OVs-BOC-2.

Embodiment 3

[0033] A method for preparing a bismuth oxychloride photocatalyst according to an embodiment of the present invention includes the following steps: weighing 4 mmol of bismuth nitrate pentahydrate and 4 mmol of sodium chloride in a beaker, adding 80 mL of deionized water, and fully stirring at room temperature for 20 min; The mixed solution was transferred to a 100 mL polytetrafluoroethylene reaction kettle for thermal reaction, and the reaction conditions were 150 °C for 12 h; after the reaction was completed, it was cooled to room temperature for suction filtration; Dry at 60°C for 12 hours to obtain bismuth oxychloride powder; irradiate the obtained bismuth oxychloride powder under a 6W UV lamp for 6 hours to obtain a bismuth oxychloride photocatalyst with surface defects, which is denoted as OVs-BOC-3.

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Abstract

The invention discloses a preparation method and application of a bismuth oxychloride photocatalyst, and belongs to the technical field of photocatalytic materials. The invention provides specific steps of the preparation method of the bismuth oxychloride photocatalyst. The bismuth oxychloride photocatalyst prepared by the invention has high visible light activity, and the problems that the visible light absorption capacity of the photocatalyst is weak and photon-generated carriers are easy to compound can be obviously improved; the bismuth oxychloride photocatalyst prepared by the invention is stable in chemical property and has good reusability; compared with catalysts of the same type obtained by other preparation methods, the preparation method of the bismuth oxychloride photocatalyst does not use an organic solvent and other auxiliary raw materials, and the preparation process is green, simple, convenient and easy to regulate and control, so that the cost of the photocatalyst is lower, and batch production can be realized.

Description

technical field [0001] The invention relates to a preparation method and application of a bismuth oxychloride photocatalyst, and belongs to the technical field of photocatalytic materials. Background technique [0002] In recent years, relevant departments have successively issued policies to strengthen the supervision of volatile fugitive emission pollutants ("The Law of the People's Republic of China on the Prevention and Control of Air Pollution", "Volatile Organic Compound Emission Control Standards"). The treatment of fugitive exhaust gas, especially the low-concentration fugitive exhaust gas in the factory workshop, is a big problem. The existing technologies (such as absorption method, adsorption method, condensation method and membrane separation method) are difficult to apply due to the limitation of application scenarios. And photocatalysis is one of the most promising technologies to solve this problem. [0003] Photocatalytic technology is a new type of environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G29/00B01J27/06B01D53/86B01D53/72
CPCC01G29/00B01J27/06B01D53/8668B01D53/007C01P2004/03C01P2002/72C01P2002/84C01P2004/61B01D2255/802B01D2257/7027B01J35/39
Inventor 杜长明郑希哲
Owner SUN YAT SEN UNIV
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