Degradation of Malachite green using heterogeneous nanophotocatalysts (NiO/TiO2, CuO/TiO2) under solar and microwave irradiation

Heterogeneous photocatalysis is an advanced oxidation process (AOP). This technique is used to degrade a wide range of pollutants in water. In this study, photocatalytic oxidation and mineralization of malachite green in an aqueous suspension containing nickel-based catalysts and copper supported on...

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Bibliographic Details
Published in:SN applied sciences 2021-02, Vol.3 (2), p.255, Article 255
Main Authors: Djebbari, Chafia, zouaoui, Emna, Ammouchi, Nesrine, Nakib, Chafika, Zouied, Daoiya, Dob, Karima
Format: Article
Language:English
Subjects:
1. Chemistry (general)
Applied and Technical Physics
Catalysts
Chemistry/Food Science
Copper oxides
Dyes
Earth Sciences
Efficiency
Engineering
Environment
Experiments
Irradiation
Malachite green
Materials Science
Microwave radiation
Mineralization
Nickel
Nickel oxides
Oxidation
Oxidation process
Photocatalysis
Photodegradation
Photooxidation
Pollutants
Research Article
Solar radiation
Spectrum analysis
Titanium dioxide
Water pollution
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Summary:Heterogeneous photocatalysis is an advanced oxidation process (AOP). This technique is used to degrade a wide range of pollutants in water. In this study, photocatalytic oxidation and mineralization of malachite green in an aqueous suspension containing nickel-based catalysts and copper supported on TiO 2 prepared by wet diffusional impregnation was studied using two sources of irradiation: solar and microwave. Photodegradation kinetics were studied according to several parameters, such as catalyst type, dye concentration, photocatalyst mass and microwave power. The results showed that the photodegradation of malachite green is faster in the presence of CuO/TiO 2 catalyst than NiO/TiO 2 catalyst than TiO 2 . Dye degradation by microwave irradiation is faster than that by solar irradiation.
ISSN:2523-3963
2523-3971
DOI:10.1007/s42452-021-04266-4