Synthesis of new photocatalyst based on g-C3N4/N,P CQD/ZIF-67 nanocomposite for ciprofloxacin degradation under visible light irradiation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY(2023)
摘要
Ciprofloxacin (CIP) is one of the most important antibiotics in pharmaceutical companies' industrial drains and causes environmental pollution. In this work, a new photocatalyst based on g-C3N4/N, P CQD/ZIF-67 was synthesized for CIP photocatalytic degradation. The synthesized sample was characterized by field emission scanning electron microscopy, Fourier transform infrared spectrometer, and X-ray powder diffraction. Synthesized photocatalytic can degrade CIP as 98%. This degradation occurred in 90 mins. The results showed OH & DEG; and & DEG;O2 & DBLBOND; radicals have an important role in CIP degradation in pH = 6. Moreover, the bandgap evaluated for g-C3N4/N, P-CQD/ZIF-67 nanocomposite (1.3 eV) is less than gC3N4 and g-C3N4/N,P CQD, which indicates the faster movement of electrons in the synthesized nanocomposite, so g-C3N4/N,P CQD/ZIF-67 nanocomposite has good application in CIP degradation. The products of CIP degradation were analyzed by LC/MS-MS.& COPY; 2023 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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关键词
Ciprofloxacin,g-C3N4,N,P CQD,ZIF-67,Photocatalytic degradation
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