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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 14/2020

31.05.2020

Enhanced photoactivity of cerium tungstate-modified graphitic carbon nitride heterojunction photocatalyst for the photodegradation of moxifloxacin

verfasst von: S. Lakshmi Prabavathi, K. Saravanakumar, T. T. I. Nkambule, V. Muthuraj, G. Mamba

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 14/2020

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Abstract

Design and optimization of visible-light-driven photocatalysts for degradation of organic pollutants is an important step towards environmental decontamination. In this study, wolframite cerium tungstate (Ce2(WO4)3, (CW)) hybridized with g-C3N4 (CN) nanosheets was synthesized via a simple hydrothermal route followed by an ultrasound-assisted synthesis method. The prepared Ce2(WO4)3@ g-C3N4 (CW@CN) heterojunction was investigated for photocatalytic degradation of the antibiotic moxifloxacin (MXF) under visible light irradiation. Structural, morphological, and optical properties as well as chemical composition of the as-synthesized heterojunction were investigated by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), UV–Vis diffuse reflectance spectroscopy (UV–Vis DRS) and photoluminescence (PL). MXF photocatalytic degradation by the binary nanostructure (Ce2(WO4)3@ g-C3N4) (94.1%) was the highest compared to g-C3N4 (53.6%) and Ce2(WO4)3 (46.4%). Such enhanced activity could be ascribed to efficient suppression of the charge carriers’ recombination, leading to adequate formation of the reactive species responsible for MXF degradation. Furthermore, the Ce2(WO4)3@ g-C3N4 heterojunction showed remarkable stability over five consecutive cycles, with only 11.5% reduction after the 5th cycle. This work established the potential applicability of Ce2(WO4)3@ g-C3N4 nanostructures towards photocatalytic removal of MXF.
Vorheriger Artikel Branched heterostructures of nickel–copper phosphides as an efficient electrocatalyst for the hydrogen evolution reaction
Nächster Artikel Effect of annealing conditions on the superconducting properties of nano-sized metallic Au-added Bi1.8Sr2Au0.2Ca1.1Cu2.1Oy (Bi-2212) ceramics

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Metadaten
Titel
Enhanced photoactivity of cerium tungstate-modified graphitic carbon nitride heterojunction photocatalyst for the photodegradation of moxifloxacin
verfasst von
S. Lakshmi Prabavathi
K. Saravanakumar
T. T. I. Nkambule
V. Muthuraj
G. Mamba
Publikationsdatum
31.05.2020
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 14/2020
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-020-03692-1

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