Back to Search
Start Over
Visible Light Response Photocatalytic Performance of Z-Scheme Ag3PO4/GO/UiO–66–NH2Photocatalysts for the Levofloxacin Hydrochloride
- Source :
- Langmuir; November 2021, Vol. 37 Issue: 45 p13309-13321, 13p
- Publication Year :
- 2021
-
Abstract
- 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 PbO2nanoparticles. In comparison with Ag3PO4and 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 Ag3PO4and 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.
Details
- Language :
- English
- ISSN :
- 07437463 and 15205827
- Volume :
- 37
- Issue :
- 45
- Database :
- Supplemental Index
- Journal :
- Langmuir
- Publication Type :
- Periodical
- Accession number :
- ejs58210281
- Full Text :
- https://doi.org/10.1021/acs.langmuir.1c01901