Ce3+/Ce4+-Doped ZrO2/CuO Nanocomposite for Enhanced Photocatalytic Degradation of Methylene Blue under Visible Light

In recent years, photocatalysis has been used as an environmentally friendly method for the degradation of organic pigments in water. In this study, Ce3+/Ce4+-doped ZrO2/CuO as a mixed semiconductor oxide was successfully prepared by a one-step hydrothermal method. The Ce3+/Ce4+-doped ZrO2/CuO has s...

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Bibliographic Details
Published in:Toxics (Basel) 2022-08, Vol.10 (8), p.463
Main Authors: Chu, Manh Nhuong, Nguyen, Lan T. H., Truong, Mai Xuan, Do, Tra Huong, Duong, Thi Tu Anh, Nguyen, Loan T. T., Pham, Mai An, Tran, Thi Kim Ngan, Ngo, Thi Cam Quyen, Pham, Van Huan
Format: Article
Language:English
Subjects:
Catalytic activity
Ce3+/Ce4
Cerium
Charge transfer
Copper oxides
Decomposition
Degradation
Doping
Dyes
Efficiency
Electron microscopy
hydrothermal
Irradiation
Methylene blue
mixed semiconductor oxide
Morphology
Nanocomposites
Photocatalysis
Photodegradation
Pigments
Recombination
Scanning electron microscopy
Semiconductors
Spectroscopy
Spectrum analysis
Transmission electron microscopy
Ultraviolet radiation
Water pollution
X-ray diffraction
Zirconium dioxide
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Summary:In recent years, photocatalysis has been used as an environmentally friendly method for the degradation of organic pigments in water. In this study, Ce3+/Ce4+-doped ZrO2/CuO as a mixed semiconductor oxide was successfully prepared by a one-step hydrothermal method. The Ce3+/Ce4+-doped ZrO2/CuO has shown high degradation efficiency of methylene blue (MB), and the maximum degradation percentage was observed to be 94.5% at 180 min under irradiation visible light. The photocatalytic activity increases significantly by doping Ce3+/Ce4+ in ZrO2/CuO for MB degradation. Ce3+/Ce4+ doping is shown to reduce the (e-/h+) recombination rate and improve the charge transfer, leading to enhanced photocatalytic activity of materials. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), FTIR, EDS, BET and diffuse reflectance spectroscopy (DRS).
ISSN:2305-6304
2305-6304
DOI:10.3390/toxics10080463