Novel sol–gel synthesis of Mo-doped ZnO-NPs for photo-catalytic waste water treatment using the RhB dye as a model pollutant

Photo-catalytic wastewater treatment is one of the most environmentally friendly, sound and cost-effective technique but the challenge is to identify the most efficient photo-catalyst. After titanium dioxide, zinc oxide (ZnO) is the most extensively utilized and readily available photo-catalyst for...

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Bibliographic Details
Published in:Environment, development and sustainability development and sustainability, 2023-10, Vol.25 (10), p.11583-11598
Main Authors: Sohaib, Muhammad, Iqbal, Tahir, Afsheen, Sumera, Tahir, M. B., Masood, Arslan, Rafique, Muhammad, Riaz, K. N., Sayed, M. A., Abd El-Rehim, A. F., Ali, Atif Mossad
Format: Article
Language:English
Subjects:
Catalysts
Catalytic activity
Chemical properties
Chemical synthesis
Cost analysis
Crystal structure
Crystallites
Crystals
Degradation
Doping
Earth and Environmental Science
Ecology
Economic Geology
Economic Growth
Efficacy
Environment
Environmental Economics
Environmental Management
Molybdenum
Nanoparticles
Optical properties
Rhodamine
Sol-gel processes
Sustainable Development
Titanium dioxide
Wastewater
Wastewater treatment
Water treatment
Wurtzite
X-ray diffraction
Zinc
Zinc oxide
Zinc oxides
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Summary:Photo-catalytic wastewater treatment is one of the most environmentally friendly, sound and cost-effective technique but the challenge is to identify the most efficient photo-catalyst. After titanium dioxide, zinc oxide (ZnO) is the most extensively utilized and readily available photo-catalyst for treating wastewater. The need of the hour is to improve its catalytic degrading efficacy so that it may be used as a commercial photo-catalyst. In this study, pure and Molybdenum (Mo-1, 2 and 3%)-doped ZnO nanoparticles (NPs) were fabricated via facile and cost-effective chemical sol–gel method. The influence of dopant concentration on pure ZnO-NPs has been investigated by examining their structural, optical and chemical properties. Fabricated NPs were analyzed using a variety of advanced characterization techniques such as XRD, EDS, SEM, UV–Visible, FTIR and PL spectroscopy. The Mo-doped ZnO XRD patterns show a wurtzite hexagonal crystal structure. It was discovered that the crystallite size of Mo-doped ZnO is significantly smaller than that of pure ZnO and declines as the Mo concentration increases. The photo-catalytic activity of 2% Mo-doped ZnO in Rhodamine B (RhB) degradation was investigated. It was discovered that the degradation efficiency of RhB over Mo-doped ZnO rises up to 2% doping and subsequently declines as doping levels increase.
ISSN:1387-585X
1573-2975
DOI:10.1007/s10668-022-02543-9