Copper-Doped ZnO Thin Films Deposited by Spray Pyrolysis: Effect of Water Content in Starting Solution on Methylene Blue Degradation by Photocatalysis

2021 ◽  
Author(s):  
T. V. K. Karthik ◽  
A. Maldonado ◽  
M. de la L. Olvera ◽  
A. G. Hernández ◽  
J. Vega-Pérez ◽  
...  
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Water Content ◽  
Spray Pyrolysis ◽  
Zno Thin Films ◽  
Methylene Blue Degradation ◽  
Effect Of Water ◽  
Starting Solution ◽  
Doped Zno

scholarly journals Physical and photocatalytic properties of sprayed Dy doped ZnO thin films under sunlight irradiation for degrading methylene blue

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 24917-24925
Author(s):  
G. El Fidha ◽  
N. Bitri ◽  
F. Chaabouni ◽  
S. Acosta ◽  
F. Güell ◽  
...  
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Spray Pyrolysis ◽  
Photocatalytic Properties ◽  
Zno Thin Films ◽  
Sunlight Irradiation ◽  
Doped Zno

Dysprosium-doped zinc oxide (ZnO) thin films prepared through spray pyrolysis show outstanding photocatalytic activity for the degradation of methylene blue.

scholarly journals Fluorine-doped ZnO thin films deposited by spray pyrolysis technique

2011 ◽  
Vol 53 (2) ◽  
pp. 20501 ◽  
Author(s):  
A. Douayar ◽  
R. Diaz ◽  
F. Cherkaoui El Moursli ◽  
G. Schmerber ◽  
A. Dinia ◽  
...  
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Zno Thin Films ◽  
Doped Zno

Characterization of Ag-doped ZnO thin films by spray pyrolysis and its using in enhanced photoelectrochemical performances

2020 ◽  
Vol 119 ◽  
pp. 108114 ◽  
Author(s):  
M. Karyaoui ◽  
D. Ben Jemia ◽  
M. Gannouni ◽  
I. Ben Assaker ◽  
A. Bardaoui ◽  
...  
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Zno Thin Films ◽  
Doped Zno

scholarly journals Methylene Blue Photodegradation under Visible Irradiation on Ag-Doped ZnO Thin Films

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
William Vallejo ◽  
Alvaro Cantillo ◽  
Carlos Díaz-Uribe
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Raman Spectroscopy ◽  
Photocatalytic Degradation ◽  
Physicochemical Characterization ◽  
Zno Thin Films ◽  
Visible Range ◽  
X Ray ◽  
Visible Irradiation ◽  
Doped Zno

This study synthesized and characterized Ag-doped ZnO thin films. Doped ZnO powders were synthesized using the sol-gel method, and thin films were fabricated using the doctor blade technique. The Ag content was determined by optical emission spectrometers with inductively coupled plasma (ICP plasma). Additionally, X-ray diffraction, Raman spectroscopy, Atomic Force Microscopy (AFM), diffuse reflectance, and X-ray photoelectron spectroscopy (XPS) measurements were used for physicochemical characterization. Finally, the photocatalytic degradation of methylene blue (MB) was studied under visible irradiation in aqueous solution. The Langmuir-Hinshelwood model was used to determine the reaction rate constant of the photocatalytic degradation. The physicochemical characterization showed that the samples were polycrystalline, and the diffraction signals corresponded to the ZnO wurtzite crystalline phase. Raman spectroscopy verified the ZnO doping process. The AFM analysis showed that roughness and grain size were reduced after the doping process. Furthermore, the optical results indicated that the presence of Ag improved the ZnO optical properties in the visible range, and the Ag-doped ZnO thin films had the lowest band gap value (2.95 eV). Finally, the photocatalytic degradation results indicated that the doping process enhanced the photocatalytic activity under visible irradiation, and the Ag-doped ZnO thin films had the highest MB photodegradation value (45.1%), as compared to that of the ZnO thin films (2.7%).

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