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
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[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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