Comparative Study of CuO, Fe₃O₄ and CuFe₂O₄/CuO over Montmorillonite Clay: Green Synthesis, Characterization and Catalytic Activity

Abstract

CuO, Fe3O4 and CuFe2O4/CuO over montmorillonite (MMT) clay were prepared with an eco‐friendly manner utilizing aqueous fruit extracts of the Terminalia chebula (T. chebula). FT‐IR and EDS spectra, XRD patterns and FE‐SEM images revealed the growth of nanoparticles on the layers of montmorillonite clay. The catalytic activity of as‐prepared nanocomposites was comparatively evaluated in the synthesis of aminotetrazole derivatives and resulted in the order of CuFe2O4/CuO/MMT>CuO/MMT>Fe3O4/MMT in their activity for the regioselective synthesis of aminotetrazoles. The combination of the acidic character of MMT clay along with the synergistic electronic effect between nanoparticles result in the superior catalytic activity of CuFe2O4/CuO/MMT which showcased the enormous potential of metallic supported nanocomposites in the catalysis field. The magnetic CuFe2O4/CuO/MMT nanocomposite was successfully reused and recovered for several times without consequential abate.

Heterogeneous Catalytic Degradation of Diuron Using Algerian Sodium Montmorillonite

“…The use of heterogeneous nanocatalysts is a promising method, and it presents a promising option for the synthesis of organic compounds to obtain exceptional performance in terms of high activity, simple recovery, and recycling. [ 1,20 ] Clays possess certain properties which make them an ultimate choice as adsorbents or a catalysis support. This is due to their low cost, and high mechanical and chemical stability.…”

“…It is a kind of nanoclay due to the characteristics of the minerals. [ 20,21 ] Generally, whatever the application is, the degradation or adsorption efficiency strongly depends on the catalyst origin and properties, as well as on the operational conditions. [ 18 ] To date, Algerian Montmorillonite has been explored in relation to the adsorption of organic pollutants, such as methylene blue, [ 22 ] fluoride, [ 23 ] and chlorobenzene.…”

Decontamination of Metronidazole Antibiotic – A Novel Nanocomposite-Based Strategy

“…Note: * pH(3,7,11), catalyst dose 20 mg/L, H 2 O 2 250 concentration mg/L, MET concentration 15 mg/L, ** pH 3, catalyst dose (20, 40, 80) mg/L, H 2 O 2 250 concentration mg/L, MET concentration 15 mg/L, *** pH 3, catalyst dose 20 mg/L, H 2 O 2 (150, 250, 500) concentration mg/L, MET concentration 15 mg/L, **** pH 3, catalyst dose 20 mg/L, H 2 O 2 250 concentration mg/L, MET concentration (15, 30, 100) mg/L.…”