1. Comparative study of KF, KCl and KBr doped with graphitic carbon nitride for superior photocatalytic degradation of methylene blue under visible light
- Author
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M. Molefe, Kriveshini Pillay, Tarisai Velempini, and E. Prabakaran
- Subjects
Materials science ,Photoluminescence ,Methylene blue ,Mining engineering. Metallurgy ,Visible light irradiation ,Potassium ,Doping ,Metals and Alloys ,Graphitic carbon nitride ,Photocatalyst ,TN1-997 ,chemistry.chemical_element ,Surfaces, Coatings and Films ,KX-g-C3N4 ,Biomaterials ,symbols.namesake ,chemistry.chemical_compound ,chemistry ,Ceramics and Composites ,symbols ,Zeta potential ,Raman spectroscopy ,Visible spectrum ,Nuclear chemistry - Abstract
In this study potassium salts such as KF, KCl and KBr were doped onto g-C3N4 to form KX-g-C3N4 (X = F, Cl and Br) via a thermal method. The KX-g-C3N4 was characterized by various instrumentation techniques such as UV-visible, FT-IR, XRD, Photoluminescence, TGA, BET, Raman, SEM, EDAX, HR-TEM, and Zeta potential. KX-g-C3N4 was explored for the photocatalytic degradation of methylene blue (MB) under visible light irradiation. Among them, KF-g-C3N4 showed excellent photocatalytic degradation of methylene blue (MB) under visible light irradiation. The KF-g-C3N4 significantly reduced the electrons-holes recombination rate when compared to KCl-g-C3N4, KBr-g-C3N4 and g-C3N4. The photocatalytic degradation mechanism was also studied with KF-g-C3N4.
- Published
- 2021