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Magnetic composite photocatalyst Ppy@CdS/ZnFe2O4 and preparation method and application thereof

A znfe2o4, composite light technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of inability to selectively degrade single and other targets, long degradation time and other problems, to achieve the effects of improving separation efficiency and light absorption utilization, improving catalytic activity, and inhibiting photocorrosion.

Inactive Publication Date: 2017-08-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But ordinary CdS / ZnFe 2 o 4 Photocatalysts have the disadvantage of being unable to selectively degrade a single target among multiple target pollutants. At the same time, the long degradation time has also become an obstacle for photocatalysts to degrade pollutants.

Method used

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  • Magnetic composite photocatalyst Ppy@CdS/ZnFe2O4 and preparation method and application thereof
  • Magnetic composite photocatalyst Ppy@CdS/ZnFe2O4 and preparation method and application thereof
  • Magnetic composite photocatalyst Ppy@CdS/ZnFe2O4 and preparation method and application thereof

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preparation example Construction

[0028] Step 1. ZnFe 2 o 4 Preparation of: FeCl 3 ·6H 2 O was added to ethylene glycol and stirred until FeCl 3 ·6H 2 O is completely dissolved, add anhydrous sodium acetate, then add ZnCl 2 Continue to stir until the solution becomes clear, then transfer the obtained mixed solution A to a high-pressure reactor and put it in an oven for solvothermal reaction for a period of time; after the oven is naturally cooled to room temperature, take out the reactor and wash the inside of the reactor. The solid sample, which is then dried for later use, is denoted as ZnFe 2 o 4 ;

[0029] Step 2. CdS / ZnFe 2 o 4 Preparation: ZnFe 2 o 4 Disperse in deionized water, then add cadmium sulfate and sulfur urine, stir until uniformly dispersed, then react the obtained dispersion B in a constant temperature water bath and inert gas protection conditions, and wash the solid after the reaction is completed and naturally cooled to room temperature The product, dried for future use, is rec...

Embodiment 1

[0032] In step 1, the FeCl 3 ·6H 2 O and ZnCl 2 The consumption is 2mmol and 1mmol, the consumption of anhydrous sodium acetate is 20mmol, the consumption of ethylene glycol is 40mL, the hydrothermal temperature in the stainless steel autoclave is 210 ℃, and described time is 24h.

[0033] In step 2, the ZnFe 2 o 4 , cadmium sulfate, thiourea, deionized water, and ammonia water are used in the order of 0.1g, 10mL, 0.05g, 0.03g, 50mL, and 5mL.

[0034] In step 3, the CdS / ZnFe 2 o 4 , chloroform, pyrrole, TRIM, AIBN, and the consumption of tetracycline are successively 0.1g, 10mL, 0.2mL, 0.05mL, 0.002mL, 0.002g; the microwave reaction bottle is put into a microwave reactor, and the setting condition is 40 ℃, 600W power, 800 rotation speed, react for 1h, and finally get imprinted Ppy@CdS / ZnFe 2 o 4 catalyst of light.

Embodiment 2

[0036] In step 1, the FeCl 3 ·6H 2 O and ZnCl 2 The consumption of sodium acetate is 4mmol and 2mmol, the consumption of anhydrous sodium acetate is 40mmol, the consumption of ethylene glycol is 100mL, and the hydrothermal temperature in stainless steel autoclave is 210 ℃, and described time is 72h.

[0037] In step 2, the ZnFe 2 o 4 , cadmium sulfate, thiourea, deionized water, and ammonia water are used in the order of 0.4g, 30mL, 0.15g, 0.09g, 150mL, and 15mL.

[0038] In step 3, the CdS / ZnFe 2 o 4 , chloroform, pyrrole, TRIM, AIBN, and the consumption of tetracycline are 0.3g, 20mL, 0.6mL, 0.15mL, 0.08mL, 0.08g; ℃, 600W power, 800 rotation speed, react for 1h, and finally get imprinted Ppy@CdS / ZnFe 2 o 4 catalyst of light.

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Abstract

The invention provides a magnetic composite photocatalyst Ppy@CdS / ZnFe2O4 and a preparation method and application thereof. The preparation method comprises the following steps of ZnFe2O4 preparation, CdS / ZnFe2O4 preparation and Ppy@CdS / ZnFe2O4 preparation. The composite photocatalyst Ppy@CdS / ZnFe2O4 established through a molecular imprinting technology can form a Z-type heterojunction due to printing layer selectivity and CdS and ZnFe2O4 matching, so that a composite photocatalytic material prepared by the magnetic composite photocatalyst has certain selectivity and catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, in particular to a functionalized magnetic composite photocatalyst Ppy@CdS / ZnFe 2 o 4 Preparation method and application of composite photocatalyst. Background technique [0002] Tetracycline is a class of antibiotics commonly used to inhibit and kill various germs in adjacent beds. Due to the extensive use of tetracycline antibiotics, it is ubiquitous in the environment, resulting in bacterial drug resistance. On the other hand, the residual tetracycline It will have a great impact on the environment. It can exist in soil, surface water, ground water, etc., and cause great harm to the human body. Therefore, it is particularly important to effectively remove tetracyclines. In recent years, many experts and scholars have used many methods to solve the above problems, but these methods are low in efficiency and easy to cause secondary pollution. People have discovered a...

Claims

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Application Information

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IPC IPC(8): B01J31/06C02F1/30C02F101/38
CPCC02F1/30B01J31/06C02F2101/38C02F2305/10B01J35/39Y02W10/37
Inventor 朱志于洋唐旭高乃玲逯子扬霍鹏伟闫永胜李春香
Owner JIANGSU UNIV
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