Nanoarchitectured Ferrites, Graphene Oxide, and Their Composites as Enzyme Mimics and Photocatalysts

HeterogeneousHeterogeneous catalysisCatalysis, usingGraphene Oxide (GO) ferrites nanoparticles (NPs)Ferrites nanoparticles (NPs), grapheneGraphene oxideOxide (GO), and their nanocompositesNanocomposite, has garnered immense interest due to their distinct merits such as non-toxicityNon-toxicity, facile synthesisFacile synthesis, costCost-effectiveness, and ease of recovery. Two important aspects covered under heterogeneousHeterogeneous catalysisCatalysis are enzyme mimic activityEnzyme mimic activity and photocatalytic degradationPhotocatalytic degradation of organic pollutantsOrganic Pollutants. Ferrite NPsFerrites nanoparticles (NPs) and GO-based compositesGO-based composites have tunable properties as compared to pristinePristine ferrite NPsFerrites nanoparticles (NPs) and GO. The presence of GO in the nanocompositeNanocomposite endows it with numerous surface functional groupsFunctional group for interaction with different species which provide binding sites for metal ionsMetal ion and organic contaminantsOrganic contaminant as well as enhance their enzyme mimicEnzyme mimics potential. On the other hand, the presenceFerrite NPs of ferrite NPsFerrites nanoparticles (NPs) in the compositesComposite imparts magnetic propertiesMagnetic properties to them. These enzyme mimicsEnzyme mimics can be used in the biomedical applicationBiomedical application in enzymeless sensorsEnzymeless sensors, which are otherwise costly and require sophisticated storage conditions. GrapheneGraphene-ferriteFerrites compositesComposite have greater surface areaSurface Area and lower band gapBand gap owing to which they have potential applicationApplication as photocatalystsPhotocatalyst. The magneticMagnetic-GO NC can substitute commercially used TiO2 which absorbs only ultravioletUltraviolet radiations due to wide band gapBand gap (3.2 eV) for degradationDegradation of organic contaminantsOrganic contaminant in the wastewater treatmentWastewater treatment. This chapter provides an overview of the recent strategies for the synthesisSynthesis/properties of ferritesFerrites NPs/GO and their nanocompositesNanocomposite followed by their applicationsApplication in the field of photocatalysisPhotocatalysis and enzyme mimicsEnzyme mimics.