Montmorillonite-supported NiFe2O4 as magnetically separable and reusable oxidation catalyst

• Published in: Materials letters Vol. 344; p. 134444
• Main Authors: Fatimah, Is, Yanti, Ika, Wijayanti, Hiroko Kawaii, Nisa, Elfira Ulya, Sagadevan, Suresh, Tamyiz, Muchammad, Doong, Ruey-an
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-08-2023
• Subjects: Catalyst; Magnetic; Montmorillonite; NiFe2O4; NiFe2O4; Magnetic; Montmorillonite; Catalyst
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2023.134444

•NiFe2O4 onto montmorillonite was prepared by hydrothermal method.•The concentration of NiFe2O4 precursor is the influencing factor determining the physical properties.•The nanocomposite exhibited excellent catalytic activity in methyl violet oxidation.•The nanocomposite is reusable without catalytic reduction.
By supporting NiFe2O4 onto montmorillonite, the highly active and reusable catalyst for methyl violet oxidation was obtained. By using XRD, TEM, XPS, and VSM analyses, it is obtained that the concentration of precursor was a controlling factor to determine the specific surface area, NiFe2O4 particle size, and magnetism. It is found that adsorption influences the catalytic activity enhancement and the stability of catalysts.