CN/NCD/ZFL photocatalyst, application thereof and antibiotic wastewater treatment method

An antibiotic wastewater, photocatalyst technology, applied in water/sludge/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems that have not been reported in research, achieve high stability and enhance charge transfer ability , the effect of stable catalytic effect

Pending Publication Date: 2022-04-22
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] So far, there is no report on the degradation of tetracycline wastewater by nitrogen-doped carbon dot composite graphite-like carbon nitride / zinc-iron layered double metal hydroxide Z-type heterojunction photocatalyst

Method used

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  • CN/NCD/ZFL photocatalyst, application thereof and antibiotic wastewater treatment method
  • CN/NCD/ZFL photocatalyst, application thereof and antibiotic wastewater treatment method
  • CN/NCD/ZFL photocatalyst, application thereof and antibiotic wastewater treatment method

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Embodiment 1

[0038] A CN / NCD / ZFL photocatalyst in this embodiment is a nitrogen-doped carbon dot composite graphite-like carbon nitride / zinc-iron layered double metal hydroxide Z-type heterojunction photocatalyst, and its preparation method includes the following steps :

[0039] (1) Under magnetic stirring, add 3 g of citric acid and 1 g of urea to 15 mL of deionized water, mix well and transfer to a hydrothermal reaction kettle for hydrothermal reaction at 180 ° C for 5 h;

[0040] (2) The solution obtained in step (1) is centrifuged at high speed to remove contained impurities, and the supernatant is dried and dissolved in deionized water to prepare a nitrogen-doped carbon dot solution with a concentration of 1 mg / mL for subsequent use;

[0041] (3) Add 3 g of melamine to 50 mL of absolute ethanol and stir for 2 h, then dropwise add the nitrogen-doped carbon dot solution obtained in step (2), continue stirring for 2 h, and continue stirring in a 70° C. water bath until the solvent evapo...

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Abstract

The invention discloses a CN / NCD / ZFL photocatalyst, application thereof and an antibiotic wastewater treatment method. The CN / NCD / ZFL photocatalyst is prepared through an in-situ deposition-calcination method, the charge carrier transfer capacity of the catalyst is enhanced by forming a Z-type graphite-like carbon nitride / zinc-iron layered double-metal hydroxide heterojunction, the light response range is widened, and the visible light utilization rate and the charge transfer capacity are further improved through nitrogen-doped carbon dots. The nitrogen-doped carbon dot composite graphite-like carbon nitride / zinc-iron layered double hydroxide Z-type heterojunction photocatalyst prepared by the invention can effectively respond to visible light and generate related active species, and tetracycline in water is efficiently degraded.

Description

technical field [0001] The invention belongs to the technical field of composite catalysts, and in particular relates to a CN / NCD / ZFL photocatalyst, an application thereof, and an antibiotic wastewater treatment method. Background technique [0002] Advanced oxidation technology (Advanced Oxidation Process, AOPs) to produce active species with strong oxidizing ability (h + ,·OH,·O 2 - ) is characterized by high temperature and high pressure, electricity, sound, light irradiation, catalyst and other reaction conditions to oxidize refractory organic matter into low-toxic or non-toxic small molecular substances, thereby degrading pollutants. Semiconductor photocatalysis does not cause secondary pollution and can completely degrade pollutants (generating CO 2 、H 2 O), which is considered to be the most feasible method to solve environmental pollutants in sewage. [0003] A large number of studies have found that a single semiconductor photocatalyst has the disadvantages of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30C02F1/72C02F1/74C02F101/34C02F101/38
CPCB01J27/24B01J35/004C02F1/30C02F1/725C02F1/74C02F2101/34C02F2101/345C02F2101/38C02F2305/10
Inventor 薛秀玲陈小奕张宗玉马婷婷
Owner HUAQIAO UNIVERSITY
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