Bi2O2CO3/PPy/g-C3N4 compound photocatalyst and preparation method and application thereof

A composite light and catalyst technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Composite, low utilization rate of sunlight and other problems, achieve good degradation effect, good light and heat stability, and improve the effect of response range

Inactive Publication Date: 2017-07-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current photocatalysts have two disadvantages: (1) the utilization rate of sunlight is not high; (2) photogenerated electrons and holes are easily recombined
So far, the preparation of Bi 2 o 2 CO 3 / PPy / g-C 3 N 4 The work of composite photocatalysts has not been reported yet, and there are no patents and literature reports about Bi 2 o 2 CO 3 / PPy / g-C 3 N 4 Preparation and Properties of Composite Photocatalyst

Method used

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  • Bi2O2CO3/PPy/g-C3N4 compound photocatalyst and preparation method and application thereof
  • Bi2O2CO3/PPy/g-C3N4 compound photocatalyst and preparation method and application thereof
  • Bi2O2CO3/PPy/g-C3N4 compound photocatalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] bismuth subcarbonate Bi 2 o 2 CO 3 (200 mg) and polypyrrole PPy (2 mg) were ultrasonically dispersed (2 hours) in the polar organic solvent tetrahydrofuran (20 mL), and after uniform dispersion, reflux reaction was carried out at 66° C. for 24 hours. After the reaction, after the reaction solution was cooled to room temperature, the reaction solution was filtered with a 0.45 μm nylon membrane, washed with deionized water and ethanol respectively, and then dried under vacuum at room temperature for 12 hours to obtain a gray powder product, namely Bi 2 o 2 CO 3 / PPy(BP) composite photocatalyst.

[0035] Among them, bismuth subcarbonate Bi 2 o 2 CO 3 The mass ratio to polypyrrole PPy is 100:1.

Embodiment 2

[0037] The BP composite material (80 mg) prepared in Example 1 was ultrasonically dispersed in the polar organic solvent tetrahydrofuran (20 mL), and the ultrasonic time was 1 hour. Then add g-C 3 N 4 (0.08 mg) was sonicated for 1 hour to disperse evenly, and reflux reaction was carried out at 66° C. for 12 hours. After the reaction, after the reaction solution was cooled to room temperature, the reaction solution was filtered with a 0.45 μm nylon membrane, washed with deionized water and ethanol respectively, and then dried under vacuum at room temperature for 12 hours to obtain a gray powder product, namely BP / C0.1 composite photocatalyst.

[0038] Among them, BP and g-C 3 N 4 The mass ratio is 1000:1.

Embodiment 3

[0040] The BP composite material (80 mg) prepared in Example 1 was ultrasonically dispersed in the polar organic solvent tetrahydrofuran (20 mL), and the ultrasonic time was 1 hour. Then add g-C 3 N 4 (0.2 mg) was sonicated for 1 hour to disperse evenly, and reflux reaction was carried out at 66° C. for 12 hours. After the reaction, after the reaction solution was cooled to room temperature, the reaction solution was filtered with a 0.45 μm nylon membrane, washed with deionized water and ethanol respectively, and then dried under vacuum at room temperature for 12 hours to obtain a gray powder product, namely BP / C0.25 composite photocatalyst.

[0041] Among them, BP and g-C 3 N 4 The mass ratio is 1000:2.5.

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Abstract

The invention belongs to the technical field of photocatalyst materials for degrading wastewater pollutants and discloses a preparation method of a Bi2O2CO3/PPy/g-C3N4 compound photocatalyst and application of the Bi2O2CO3/PPy/g-C3N4 compound photocatalyst to Rhodamine B degradation under simulated sunlight. The preparation method includes: mixing a polypyrrole (PPy) doped bismuth subcarbonate (Bi2O2CO3) composite material with graphite-phase carbon nitride (g-C3N4) in an organic solvent according to the proportion, performing heating reflux, washing obtained products for several times, and performing vacuum drying to obtain the Bi2O2CO3/PPy/g-C3N4 compound photocatalyst material. The preparation method has the advantages that the preparation method is simple and easy to achieve large-scale industrial production, the prepared compound material is stable in property and high in photocatalytic activity, the spectral response range of Bi2O2CO3 is expanded, sunlight utilization rate is increased, and the prepared compound material has a good degrading effect on organic dye Rhodamine B of certain concentration and is applicable to dye wastewater treatment.

Description

technical field [0001] The invention belongs to the field of photocatalysts, in particular to a series of ternary systems Bi with simulated sunlight activity 2 o 2 CO 3 / PPy / g-C 3 N 4 Preparation and application of composite photocatalysts. Background technique [0002] With the rapid development of industry and increasing population, environmental pollution and shortage of key energy sources have become two major problems restricting the development of human society. Solar energy is an abundant, clean and sustainable energy source, and photocatalysis is an effective way to utilize solar energy resourcefully. Photocatalytic technology can use abundant solar energy to degrade organic pollutants, which is of great significance to solve the environmental crisis, especially the application of semiconductor photocatalytic technology. However, the current photocatalysts have two disadvantages: (1) the utilization rate of sunlight is not high; (2) photogenerated electrons and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C02F1/30C02F101/38C02F101/30C02F101/34
CPCB01J31/06B01J35/004C02F1/30C02F2101/308C02F2101/34C02F2101/38C02F2305/10Y02W10/37
Inventor 赵炜王允王爱健窦生平吴里程王谦
Owner JIANGSU UNIV
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