Visible Light Response Photocatalytic Performance of Z-Scheme Ag3PO4/GO/UiO–66–NH2 Photocatalysts for the Levofloxacin Hydrochloride
| Autor: | Jinru Lin, Dandan Chen, Ming Duan, Yongting Wu, Pengfei Zhu, Lisi Xie, Dan Luo |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Diffuse reflectance infrared fourier transform Surfaces and Interfaces Condensed Matter Physics Dielectric spectroscopy X-ray photoelectron spectroscopy Electrochemistry Photocatalysis General Materials Science Fourier transform infrared spectroscopy Spectroscopy Photodegradation Nuclear chemistry Visible spectrum |
| Zdroj: | Langmuir. 37:13309-13321 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/acs.langmuir.1c01901 |
| Popis: | A Ag3PO4/GO/UiO-66-NH2(AGU) composite photocatalyst was prepared by an ultrasonic-assisted in situ precipitation method. The optical property, structure, composition, and morphology of photocatalysts were investigated using UV-vis diffuse reflectance spectroscopy, photoluminescence spectroscopy, electrochemical impedance spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, energy-dispersive spectrometry, transmission electron microscopy, Fourier transform infrared spectroscopy, and charge flow tracking by photodeposition of Pt and PbO2 nanoparticles. In comparison with Ag3PO4 and Ag3PO4/UiO-66-NH2(AU), the AGU composite photocatalyst showed heightened photocatalytic performance for the degradation of levofloxacin hydrochloride (LVF). The AGU photocatalyst (dosage: 0.8 g/L) with 1% mass content of graphene oxide (GO), the mass ratio of Ag3PO4 and UiO-66-NH2(U66N) reached 2:1, showed the highest photodegradation rate of 94.97% for 25 mg/L LVF after 60 min of visible light irradiation at pH = 6. The formation of a heterojunction and the addition of GO synergistically promote faster separation of electron-hole pairs, retain more active substances, and enhance the performance of the photocatalyst. Furthermore, the mechanism of the Z-scheme of the AGU composite photocatalytic is proposed. |
| Databáze: | OpenAIRE |
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