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Photocatalytic degradation of organic compounds in dye wastewater by Fe3+ doped nano-ZnO/TiO2 composite photocatalyst

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Title Photocatalytic degradation of organic compounds in dye wastewater by Fe3+ doped nano-ZnO/TiO2 composite photocatalyst
 
Creator Lin, Lin
Ahmed Ali, Khozema
 
Subject Calcination method
Fe3+ doped nano-ZnO/TiO2 composite
Methyl orange degradation
Nano-ZnO/TiO2 photocatalyst
Visible light photocatalysis
 
Description 506-520
In this study, a Fe3+ doped ZnO/TiO2 photocatalyst with optimized photocatalytic efficiency has been prepared using the
calcination method. The synthesized photocatalyst has been comprehensively characterized using four analytical techniques:
X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray
photoelectron spectroscopy (XPS). XRD analysis revealed the presence of TiO2, ZnO, Fe2O3, and carbon in the photocatalyst
composition. SEM imaging demonstrated that the particle size of the synthesized photocatalyst is at the nanometer scale. EDS
results confirmed the successful doping of Fe3+ into the photocatalyst structure, with the photocatalyst surface exhibiting carbon
enrichment. XPS analysis indicated that the combination of ZnO and TiO2 promoted the formation of oxygen vacancies on the
TiO2 surface, thereby enhancing photocatalytic efficiency. Optimization experiments revealed that the best photocatalytic
performance was achieved when the ratio of Zn (CH3COO)2, TiCl4, FeCl3ꞏ6H2O, and oleic acid was 1:1:0.02:3, with a
calcination temperature of 400 ℃. Under these conditions, the Fe3+ doped ZnO/TiO2 photocatalyst exhibited superior
photocatalytic efficiency. With the addition of 0.2 wt % Fe3+ to the ZnO/TiO2 photocatalyst, the removal rates of methyl orange
reached 90.68% and 97.14% after 4 h of exposure to incandescent lamp and sunlight, respectively.
 
Date 2024-05-07T09:33:59Z
2024-05-07T09:33:59Z
2024-05
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/63863
https://doi.org/10.56042/ijct.v31i3.3324
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.31(3) [May 2024]