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Preparation method of Ag/AgBr/Ag3PO4/AC composite photocatalyst with activated carbon as carrier

A composite photo-catalyst technology, applied in the field of photocatalysis, can solve the problems that are difficult to apply, and achieve the effect of promoting separation, strong specific surface area, and good electrical conductivity

Inactive Publication Date: 2021-12-17
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But due to AgBr and Ag 3 PO 4 Photocorrosion, making it difficult to apply in actual production

Method used

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  • Preparation method of Ag/AgBr/Ag3PO4/AC composite photocatalyst with activated carbon as carrier
  • Preparation method of Ag/AgBr/Ag3PO4/AC composite photocatalyst with activated carbon as carrier
  • Preparation method of Ag/AgBr/Ag3PO4/AC composite photocatalyst with activated carbon as carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) AgBr / Ag 3 PO 4 Preparation of / AC

[0033] Add 0.0021g of activated carbon into 10mL of deionized water, ultrasonically oscillate for 10min, and stir magnetically for 10min to disperse the activated carbon evenly to obtain a suspension, then add 10mL of AgNO 3 Solution (0.14mol / L) was added dropwise to the above suspension, and stirred in the dark for 30min; continue to add 10mL Na 3 C 6 h 5 o 7 2H 2 O solution (0.14mol / L) was added dropwise to it, and after the dropwise addition, continued to stir in the dark for 30min; then, under magnetic stirring, 10mL of KBr solution (0.14mol / L) was added dropwise to it, and then continued to stir in the dark for 10min ; Finally Na 2 HPO 4 The solution (0.035mol / L) was added dropwise to the above mixture, and after the dropwise addition, the stirring was continued for 30 min in the dark to ensure that there was enough time for all the reactions to proceed completely. The product was collected by centrifugation, washed ...

Embodiment 2

[0038] (1) AgBr / Ag 3 PO 4 Preparation of / AC

[0039] Add 0.0042g of activated carbon into 10mL of deionized water, ultrasonically oscillate for 10min, and magnetically stir for 10min to disperse the activated carbon evenly to obtain a suspension, then add 10mL of AgNO 3 Solution (0.14mol / L) was added dropwise to the above suspension, and stirred in the dark for 30min; continue to add 10mL Na 3 C 6 h 5 o 7 2H 2 O solution (0.14mol / L) was added dropwise to it, and after the dropwise addition, continued to stir in the dark for 30min; then, under magnetic stirring, 10mL of KBr solution (0.14mol / L) was added dropwise to it, and then continued to stir in the dark for 10min ; Finally Na 2 HPO 4 The solution (0.035mol / L) was added dropwise to the above mixture, and after the dropwise addition, the stirring was continued for 30 min in the dark to ensure that there was enough time for all the reactions to proceed completely. The product was collected by centrifugation, washed ...

Embodiment 3

[0044] (1) AgBr / Ag 3 PO 4 Preparation of / AC

[0045] Add 0.0084g of activated carbon into 10mL of deionized water, ultrasonically oscillate for 10min, and magnetically stir for 10min to disperse the activated carbon evenly to obtain a suspension, then add 10mL of AgNO 3 Solution (0.14mol / L) was added dropwise to the above suspension, and stirred in the dark for 30min; continue to add 10mL Na 3 C 6 h 5 o 7 2H 2 O solution (0.14mol / L) was added dropwise to it, and after the dropwise addition, continued to stir in the dark for 30min; then, under magnetic stirring, 10mL of KBr solution (0.14mol / L) was added dropwise to it, and then continued to stir in the dark for 10min ; Finally Na 2 HPO 4 The solution (0.035mol / L) was added dropwise to the above mixture, and after the dropwise addition, the stirring was continued for 30 min in the dark to ensure that there was enough time for all the reactions to proceed completely. The product was collected by centrifugation, washed ...

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Abstract

The invention provides a preparation method of an Ag / AgBr / Ag3PO4 / AC composite photocatalyst with activated carbon as a carrier. The method comprises the following steps: taking activated carbon as the carrier, synthesizing the AgBr / Ag3PO4 / AC composite catalyst by adopting a simple impregnation-precipitation method, successfully loading the composite catalyst in the activated carbon, and then performing irradiation by a xenon lamp to reduce Ag<+>, thereby synthesizing the final product Ag / AgBr / Ag3PO4 / AC composite photocatalyst. The synthesis method is novel and simple to operate, can effectively remove organic pollutants such as methyl orange and methylene blue, and meets the development requirements of green chemistry.

Description

technical field [0001] The invention provides a preparation method of a silver bromide composite photocatalyst with activated carbon as a carrier, belongs to the technical field of photocatalysis, and is a highly efficient composite photocatalyst. Background technique [0002] There are many types of traditional semiconductor photocatalysts, but there are few reports on composite photocatalysts loaded with simple silver-silver halide-silver phosphate on activated carbon. According to the literature, Ag has a plasmon resonance effect on the surface of silver halide (AgX, X=Cl, Br) and silver phosphate, and nano-Ag simple substance can improve the photoluminescence of the composite photocatalyst by inhibiting the recombination of photogenerated electrons and holes. Catalytic activity and stability. But due to AgBr and Ag 3 PO 4 The photocorrosivity makes it difficult to apply in actual production. The photocorrosion of materials can be effectively improved by loading. Amon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18C02F1/30C02F101/30C02F101/38
CPCB01J27/1817C02F1/30C02F2101/30C02F2305/10C02F2101/40C02F2101/38B01J35/39
Inventor 庞有勇姜峰刘博天伍亮义
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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