Composite catalyst for degrading antibiotics by visible light

A technology of composite catalysts and antibiotics, applied in the field of environmental chemistry, can solve the problem of difficult recovery of catalysts, and achieve the effects of good physical and chemical properties, improved catalytic efficiency, and excellent photocatalytic performance.

Inactive Publication Date: 2018-10-16
上海泽铭环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a novel composite nano-catalyst preparation method to obtain a novel composite nano-catalyst with excellent catalytic pe...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Measure 20mL 0.1mol / L AgNO 3 Aqueous solution, 10mL 0.1mol / L Na 2 MoO 4 Add 0.02 g of polyethylene glycol to the aqueous solution, place the two solutions on both sides of the casing, let stand for 10 hours to react until the system fully reacts, take the precipitates on both sides of the casing, wash and dry to obtain graphene powder; Put 1 g of graphene powder and 0.5 g of the nano-silver deposited silver molybdate catalyst obtained by repeating the above steps several times into a beaker, use absolute ethanol as the medium, and ultrasonically disperse for 1 hour, then suction filter the dispersed system, and then Dried in oven, obtains graphene / silver molybdate nanocomposite catalyst; Graphene / silver molybdate nanocomposite catalyst is irradiated for 10 minutes under the ultraviolet light of 20W power, obtains graphene / nanometer silver deposition silver molybdate nanocomposite catalyst . Add 0.1 g of composite catalyst, use it to degrade 50 mL of tetracycline hydr...

Embodiment 2

[0015] Measure 20mL 0.1mol / L AgNO 3 Aqueous solution, 10mL 0.1mol / L Na 2 MoO 4 Add 0.02g of Triton x-100 to the aqueous solution, place the two solutions on both sides of the casing, let it stand for 10 hours to react until the system fully reacts, take the precipitates on both sides of the swim bladder, wash and dry to obtain graphene powder body; 1 g of graphene powder and 1 g of the nano-silver deposited silver molybdate catalyst obtained by repeating the above-mentioned steps are put into a beaker, and with absolute ethanol as the medium, after ultrasonic dispersion for 1 hour, the dispersed system is suction-filtered, Dry in oven again, obtain graphene / silver molybdate nanocomposite catalyst; Graphene / silver molybdate nanocomposite catalyst irradiates 10 minutes under the ultraviolet light of 20W power, obtains graphene / nanometer silver deposition silver molybdate nanocomposite catalyst. Add 0.1 g of composite catalyst, use it to degrade 50 mL of tetracycline hydrochlo...

Embodiment 3

[0017] Measure 20mL 0.1mol / L AgNO 3 Aqueous solution, 10mL 0.1mol / L Na 2 MoO 4 Add 0.02 g of polyethylene glycol to the aqueous solution, place the two solutions on both sides of the casing, let stand for 10 hours to react until the system fully reacts, take the precipitates on both sides of the casing, wash and dry to obtain graphene powder; Put 2 g of graphene powder and 0.5 g of the nano-silver deposited silver molybdate catalyst obtained by repeating the above steps several times into a beaker, use absolute ethanol as the medium, and ultrasonically disperse for 1 hour, then suction filter the dispersed system, and then Dried in an oven to obtain a graphene / silver molybdate nanocomposite catalyst; the graphene / silver molybdate nanocomposite catalyst was irradiated for 8 minutes under the ultraviolet light of 20W power to obtain a graphene / nanometer silver deposition silver molybdate nanocomposite catalyst . Add 0.1 g of composite catalyst, use it to degrade 50 mL of tetr...

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PUM

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Abstract

The invention belongs to the technical field of environmental chemistry and particularly relates to a composite catalyst for degrading antibiotics by visible light, a preparation method of the composite catalyst and application of the composite catalyst in the field of environment. Due to characteristics including large specific surface area and high surface activity of millimeter graphene servingas a carrier, a nanosilver deposited silver molybdate catalyst is loaded on the graphene to obtain the composite catalyst for degrading antibiotics by visible light. The nano composite catalyst is high in catalytic activity and chemical stability and can be widely applied to the environment field of treatment of harmful organics in water and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental chemistry, and in particular relates to a composite catalyst for degrading antibiotics by using visible light, a preparation method and its application in the environmental field. Background technique [0002] Water pollution and air pollution in life are always threatening people's health. How to reduce pollution and protect the environment has become an issue of increasing concern. The preparation of photocatalysts capable of degrading harmful organic substances has become one of the scientific research hotspots in the field of material chemistry. Nano-silver deposited silver molybdate catalysts have attracted much attention due to their safety, non-toxicity and outstanding photocatalytic properties. [0003] The present invention tries to load the nano silver deposited silver molybdate catalyst on the graphene carrier, and prepares the graphene / nano silver deposited silver molybdate compo...

Claims

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Application Information

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IPC IPC(8): B01J23/68B01J35/02B01J37/34C02F1/30C02F101/38
CPCB01J23/686B01J35/004B01J35/023B01J37/345C02F1/30C02F2101/38C02F2305/10
Inventor 占明军刘金库王凤蕊
Owner 上海泽铭环境科技有限公司
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