Insight into photocatalytic behavior of magnesium ferrite–bentonite nanocomposite for the degradation of organic contaminants

In the present work, MgFe 2 O 4 –bentonite nanocomposite was studied for the photodegradation of malathion and p -nitrophenol as model pollutants. The interactions between MgFe 2 O 4 and bentonite were studied employing XPS, Mӧssbauer, and band gap potential studies. The red shifting in the XPS peak...

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Bibliographic Details
Published in:Journal of materials research 2023-02, Vol.38 (4), p.990-1006
Main Authors: Ubhi, Manpreet Kaur, Kaur, Manpreet, Grewal, Jaspreet Kaur, Oliveira, Aderbal C., Garg, Vijayendra Kumar, Sharma, Virender K.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Bentonite
Biomaterials
Chemistry and Materials Science
Contaminants
Inorganic Chemistry
Invited Paper
Magnesium ferrites
Materials Engineering
Materials research
Materials Science
Nanocomposites
Nanotechnology
Nitrophenol
Photodegradation
Scavenging
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Summary:In the present work, MgFe 2 O 4 –bentonite nanocomposite was studied for the photodegradation of malathion and p -nitrophenol as model pollutants. The interactions between MgFe 2 O 4 and bentonite were studied employing XPS, Mӧssbauer, and band gap potential studies. The red shifting in the XPS peaks and FT-IR bands of nanocomposite pinpointed the existence of strong interactions between MgFe 2 O 4 and bentonite. Mössbauer studies revealed increased absorption area corresponding to the doublet assigned to the superparamagnetic fraction of MgFe 2 O 4 NPs in nanocomposite. It signified hindrance in the growth of MgFe 2 O 4 in the presence of bentonite. The nanocomposite showed admirable photodegradation efficiency of 90% for malathion and 86% for p -nitrophenol which was higher than pristine MgFe 2 O 4 . The degradation mechanism of malathion and p -nitrophenol was predicted using scavenging studies and GC–MS analysis. The nanocomposite also displayed synergistic removal of metal ions and photodegradation of organic contaminants. It is a potential candidate for remediation of inorganic and organic contaminants. Graphical abstract
ISSN:0884-2914
2044-5326
DOI:10.1557/s43578-022-00674-3