Self-driven catalyst for degrading tetracycline based on photo-Fenton reaction as well as preparation and application of self-driven catalyst

A self-driven, catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems that the catalyst does not have self-driving characteristics, the treatment effect is not particularly ideal, and the catalyst is difficult to penetrate. Achieve green environmental protection and secondary pollution, overcome the limitation of mechanical stirring, and enhance the effect of mixing

Active Publication Date: 2021-07-30
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above-mentioned schemes can be used in the field of environmental governance, but the disadvantage of the scheme is that none of the disclosed catalysts has self-driving characteristics, and external devices need to be used to enhance the mass transfer effect of the catalyst in the solution during the reaction process, and the catalyst may be difficult to Extending into some narrow spaces for reaction, there is a reaction blind spot, and the governance effect is not particularly ideal

Method used

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  • Self-driven catalyst for degrading tetracycline based on photo-Fenton reaction as well as preparation and application of self-driven catalyst
  • Self-driven catalyst for degrading tetracycline based on photo-Fenton reaction as well as preparation and application of self-driven catalyst
  • Self-driven catalyst for degrading tetracycline based on photo-Fenton reaction as well as preparation and application of self-driven catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: CuS@Fe 3 o 4 / Pt self-driven catalyst preparation

[0039] (1) Preparation of CuS microspheres

[0040] 0.2g of CuCl 2 2H 2 O was ultrasonically dissolved in 40mL of ethylene glycol. After complete dissolution, 0.6g of thiourea was slowly added to the above solution. After stirring for 3 hours, the solution was transferred to a reaction kettle and heated to 120°C, kept for 12h, cooled to room temperature, and centrifuged. Dry to obtain lamellar CuS microsphere material;

[0041] (2)CuS@Fe 3 o 4 Preparation of composite materials

[0042] 0.3 g of CuS microspheres were ultrasonically dispersed in 30 mL of deionized water, 0.3 g of sodium citrate, 0.1 g of FeCl 3 ·6H 2 After O and 0.01g of urea are dissolved in the dispersion, slowly add 0.06g of sodium polyacrylate into the above dispersion, and stir continuously for 3h, then transfer the mixture to a reaction kettle, heat to 200°C, and keep it warm for 4h. Centrifuge, wash, and dry to obtain CuS@Fe ...

Embodiment 2

[0049] Example 2: CuS@Fe 3 o 4 / Pt self-driven catalyst preparation

[0050] The only difference between embodiment 2 and embodiment 1 is that in step (1) CuCl 2 2H 2 The quality of O is 0.4g, and the heating and holding time is 14h, and the other steps are all the same as in Example 1.

Embodiment 3

[0051] Example 3: CuS@Fe 3 o 4 / Pt self-driven catalyst preparation

[0052] The only difference between Example 3 and Example 1 is that the mass of CuS microspheres in step (2) is 0.6 g, and the heating and holding time is 2 h, and the other steps are the same as in Example 1.

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Abstract

The invention discloses a self-driven catalyst for degrading tetracycline based on photo-Fenton reaction as well as preparation and application of the self-driven catalyst. The self-driven catalyst is a compound with an asymmetric structure, wherein the compound is constructed by depositing a layer of metal platinum on the surface of a CuS-coated Fe3O4 composite material prepared by a hydrothermal synthesis method through a physical vapor deposition method. Due to the existence of the platinum layer, the synthesized composite material can generate bubbles by catalyzing decomposition of hydrogen peroxide, and the pushing force generated by the bubbles is utilized to push the composite material to move autonomously; the self-driven catalyst can also realize propulsion and guidance in various modes under dual stimulation response of a magnetic field and optical radiation; and the directional autonomous movement can enhance the mixing of surrounding fluids and accelerate the generation of active substances, so that pollutants in water can be efficiently degraded, and a brand new strategy is provided for the field of water purification.

Description

technical field [0001] The invention relates to the field of inorganic nanometer materials and the environment, in particular to a self-driven catalyst for degrading tetracycline based on photo-Fenton reaction and its preparation and application. Background technique [0002] In recent years, due to the rapid development of industrialization, the problem of excessive discharge of organic pollutants has become increasingly serious. Among them, water-soluble pollutants are the most direct cause of surface water and groundwater pollution in the environment. Moreover, many pollutants are difficult to be effectively treated by conventional chemical or biological methods, and water purification projects face great challenges. [0003] Antibiotics have been widely used for a long time as a class of drugs that can improve human health in the early years, but it is precisely because of the problem of overuse and their persistent and difficult to decompose in the water environment th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043C02F1/72C02F101/38
CPCB01J27/043C02F1/722C02F2101/38Y02W10/37
Inventor 王虹马恩慧
Owner CHINA UNIV OF MINING & TECH
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