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Cs3Bi2Cl9 (PQDs) loaded nanosheet self-assembled bismuthyl carbonate microsphere visible-light-driven photocatalyst and preparation method thereof

A technology of bismuth oxycarbonate microspheres and self-assembly, which can be used in physical/chemical process catalysts, chemical instruments and methods, separation methods, etc., and can solve the problem of low catalytic activity under visible light

Active Publication Date: 2021-07-20
铜陵博雅渡业新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005]Aiming at the deficiencies in the prior art, the present invention provides a Cs3Bi2Cl 9(PQDs) supported nanosheet self-assembled bismuth oxycarbonate microspheres visible light catalyst and preparation method, which solves the problem of low visible light catalytic activity of existing photocatalysts existing in the prior art

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  • Cs3Bi2Cl9 (PQDs) loaded nanosheet self-assembled bismuthyl carbonate microsphere visible-light-driven photocatalyst and preparation method thereof
  • Cs3Bi2Cl9 (PQDs) loaded nanosheet self-assembled bismuthyl carbonate microsphere visible-light-driven photocatalyst and preparation method thereof
  • Cs3Bi2Cl9 (PQDs) loaded nanosheet self-assembled bismuthyl carbonate microsphere visible-light-driven photocatalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, weigh 75.75g of CsCl and 94.6g of BiCl 3 Add to 5ml of DMSO (dimethyl sulfoxide), and then ultrasonically disperse this solution. The solution that was completely ultrasonically dispersed was added to a stirred 250ml acetone solution, reacted for 1min, and then the reaction solution was directly centrifuged, and the obtained reaction product was dried at 60°C to obtain Cs 3 Bi 2 Cl 9 (PQDs); Dissolve 0.46g of anhydrous sodium carbonate in 65mL of deionized water, transfer to a 100mL autoclave and stir for 10min, then add 1.6g of bismuth citrate and stir for 30min, react at 160°C for 24h, and After the end, take out the reaction product, wash the reaction product by centrifugation, water and ethanol once each, and dry at 60°C to obtain the nanosheet self-assembly (BiO) 2 CO 3 microsphere powder; finally 0.004g of Cs 3 Bi 2 Cl 9 (PQDs) with 0.8g of (BiO) 2 CO 3 Move the microspheres into a beaker filled with 200ml of isopropanol, ultra...

Embodiment 2

[0035] Such as figure 1 As shown, weigh 75.75g of CsCl and 94.6g of BiCl 3 Add to 5ml of DMSO (dimethyl sulfoxide), and then ultrasonically disperse this solution. The ultrasonically dispersed solution was added to a stirring 250ml acetone solution, reacted for 1min, and then the reaction solution was directly centrifuged, and the obtained reaction product was dried at 60°C to obtain Cs 3 Bi 2 Cl 9 (PQDs); Dissolve 0.46g of anhydrous sodium carbonate in 65mL of deionized water, transfer to a 100mL autoclave and stir for 10min, then add 1.6g of bismuth citrate and stir for 30min, react at 160°C for 24h, and After the end, take out the reaction product, wash the reaction product by centrifugation, water and ethanol once each, and dry at 60°C to obtain the nanosheet self-assembly (BiO) 2 CO 3 microsphere powder; finally 0.008g of Cs 3 Bi 2 Cl 9 (PQDs) with 0.8g of (BiO) 2 CO 3 Move the microspheres into a beaker filled with 200ml of isopropanol, ultrasonicate for 20min,...

Embodiment 3

[0037] Such as figure 1 As shown, weigh 75.75g of CsCl and 94.6g of BiCl 3 Add to 5ml of DMSO (dimethyl sulfoxide), and then ultrasonically disperse this solution. The ultrasonically dispersed solution was added to a stirring 250ml acetone solution, reacted for 1min, and then the reaction solution was directly centrifuged, and the obtained reaction product was dried at 60°C to obtain Cs 3 Bi 2 Cl 9 (PQDs); Dissolve 0.46g of anhydrous sodium carbonate in 65mL of deionized water, transfer to a 100mL autoclave and stir for 10min, then add 1.6g of bismuth citrate and stir for 30min, react at 160°C for 24h, and After the end, take out the reaction product, wash the reaction product by centrifugation, water and ethanol once each, and dry at 60°C to obtain the nanosheet self-assembly (BiO) 2 CO 3 microsphere powder; finally 0.024g of Cs 3 Bi 2 Cl 9 (PQDs) with 0.8g of (BiO) 2 CO 3 Move the microspheres into a beaker containing 200ml of isopropanol, ultrasonicate for 20min, ...

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Abstract

The invention provides a Cs3Bi2Cl9 (PQDs) loaded nanosheet self-assembled (BiO) 2CO3 microsphere visible-light-driven photocatalyst, which comprises a carrier and a carried object, the carrier is Cs3Bi2Cl9 (PQDs), and the carried object is a nanosheet self-assembled (BiO) 2CO3 microsphere; the invention further provides a preparation method of the Cs3Bi2Cl9 (PQDs) loaded nanosheet self-assembled (BiO) 2CO3 microsphere visible-light-driven photocatalyst. The preparation method comprises the following steps: weighing CsCl and BiCl3, adding into DMSO, carrying out ultrasonic dispersion, adding into a reaction solvent, obtaining a reaction product through an anti-solvent recrystallization method, and directly carrying out centrifugal drying to obtain Cs3Bi2Cl9 (PQDs); weighing soluble carbonate, adding the soluble carbonate into an aqueous solution, and then transferring into a high-pressure hydrothermal kettle for stirring; adding a bismuth-containing precursor, stirring, heating through a hydrothermal reaction to obtain a reaction product, centrifugally washing, and drying to obtain nanosheet self-assembled (BiO) 2CO3 microsphere powder; and mixing the products, carrying out ultrasonic treatment, stirring, directly centrifuging, and drying to obtain the Cs3Bi2Cl9 (PQDs) loaded nanosheet self-assembled (BiO) 2CO3 microsphere powder. The product is high in catalytic activity, and the preparation method is mild in condition and simple to operate.

Description

technical field [0001] The invention relates to the technical field of photocatalyst preparation, in particular to Cs 3 Bi 2 Cl 9 (PQDs) supported nanosheet self-assembled bismuth oxycarbonate microsphere visible light catalyst and preparation method. Background technique [0002] Nitrogen oxide (NO) released from fossil fuel combustion is a key factor in the formation of smog, and also participates in the formation of acid rain, while endangering human health. Although there are some traditional technologies (SCR, absorption, adsorption) applied to deal with high concentrations of NO X emissions, but used to purify low concentrations of NO in the air X , is not economically viable. [0003] With the rapid development of the economy, people began to realize the importance of environmental protection. Facing the pressure and challenges brought by environmental problems in recent years, the development of a green and efficient chemical technology is the top priority. Phot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232B01J35/08B01D53/86B01D53/56
CPCB01J27/232B01D53/8628B01J35/51B01J35/39
Inventor 侯喜锋董帆张国盛剑平孙艳娟
Owner 铜陵博雅渡业新材料科技有限公司