Photocatalytic degradation of atrazine under visible light using Gd-doped ZnO prepared by supercritical antisolvent precipitation route

2021 ◽  
Author(s):  
Paola Franco ◽  
Wanda Navarra ◽  
Olga Sacco ◽  
Iolanda De Marco ◽  
Antonietta Mancuso ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Antisolvent Precipitation ◽  
Supercritical Antisolvent ◽  
Supercritical Antisolvent Precipitation ◽  
Doped Zno

scholarly journals Surfactant-Free Microwave-Assisted Synthesis of Fe-Doped ZnO Nanostars as Photocatalyst for Degradation of Tropaeolin O in Water under Visible Light

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Tsz-Lung Kwong ◽  
Ka-Fu Yung
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Irradiation Time ◽  
Catalyst Loading ◽  
Orthogonal Experimental Design ◽  
Microwave Assisted Synthesis ◽  
X Ray ◽  
Microwave Assisted ◽  
Vis Spectroscopy ◽  
Doped Zno

Iron-doped zinc oxide nanostar was synthesized by the microwave-assisted surfactant-free hydrolysis method. The as-synthesized Fe-doped ZnO nanostars catalyst was fully characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), powder X-ray diffraction (XRD), and diffuse reflectance UV-vis spectroscopy (UV-DRA). The photocatalytic activity of the photocatalyst was investigated for the photocatalytic degradation of Tropaeolin O under visible light irradiation. It is observed that the doping of Fe ions enhances the absorption of the visible light and thus the photocatalytic degradation rate of Tropaeolin O would increase. Despite the Taguchi orthogonal experimental design method, the photocatalytic conversion could be achieved at 99.8% in the Fe-doped ZnO catalyzed photodegradation reaction under the optimal reaction conditions of catalyst loading (30 mg), temperature (60°C), light distance (0 cm), initial pH (pH = 9), and irradiation time (3 h). The Fe-doped ZnO photocatalyst can also be easily recovered and directly reused for eight cycles with over 70% conversion.

scholarly journals New Nanocrystalline Cu/MnOxCatalysts Prepared from Supercritical Antisolvent Precipitation

ChemCatChem ◽  
2009 ◽  
Vol 1 (2) ◽  
pp. 247-251 ◽  
Author(s):  
Zi-Rong Tang ◽  
Christopher D. Jones ◽  
James K. W. Aldridge ◽  
Thomas E. Davies ◽  
Jonathan K. Bartley ◽  
...  
Keyword(s):  
Antisolvent Precipitation ◽  
Supercritical Antisolvent ◽  
Supercritical Antisolvent Precipitation
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