Introduction -- Magnetic Iron oxide-based nanocomposites: Synthesis, Characterization, and its application towards organic dye removal -- Iron oxide based nanozymes and their applications -- Photocatalytic degradation of aqueous organic pollutantsusing iron oxide-based photocatalysts -- Iron oxide functionalized graphene nanocomposites forsupercapacitor application -- Iron Oxide Nanozyme in Biomedicine -- Nanoscalezero-valent iron and its composites for the removalof toxic pollutants from water -- Oxide phases in Bismuth Ferrite (BFO)-Key for Photovoltaic Application -- Regeneration strategies and disposal of stripping eluents and exhausted magnetic adsorbents -- Synthesis, Morphology, and Environmental Applications of Iron Oxide-Based Nanoarchitectures -- Role of Magnetic Nanomaterials in Environmental Remediation -- Applications and working mechanism of Fe2O3 nanoparticle and its composite for waste water treatment -- Iron oxide based heterogeneous catalysts for environmental applications.-Non-spherical iron oxide particles: synthesis and applications in interfacial science and engineering -- Role of Magnetic Nanomaterials in Biotechnological Applications -- Conclusion and Future Perspective.

This contributed volume provides a comprehensive understanding of synthetic protocols, characterization techniques, and current applications of iron oxide-based nanocomposite and nanoenzyme materials. It covers basic concepts and recent advancements in iron oxide-based nanocomposites and nanoenzymes, focusing on their synthesis, characterization, and functionalization for specific research applications. The different chapters in the book highlight key characterization techniques including Fourier Transform Infrared Spectroscopy, X-ray diffraction, Scanning Electron Microscopy, and Transmission Electron Microscopy, among others while it also explores various applications of these materials, such as adsorption of heavy metals and dyes, gas sensors, biomedical applications, photo-catalysis, and photovoltaic sensors. This book serves as a valuable resource for researchers and graduate students working in the fields of materials science, chemistry, physics, and biotechnology. .