Discover the energy, environment, and biomedical applications of iron-group nanomaterials Iron-Group Metal Compound Nanomaterials: Preparation, Characterization, Structure, and Applications explains the development of low-cost, high-performance materials for sustainable energy conversion and environmental remediation. Written by an expert in iron-group metal-based electrocatalyst design, this comprehensive monograph systematically covers iron, cobalt, and nickel compound nanomaterials, integrating foundational synthesis principles with cutting-edge applications. The book explores synthesis strategies including hydrothermal and electrodeposition methods, advanced characterization techniques such as XRD and XPS, and structural regulation across multiple dimensions from quantum dots to hierarchical architectures. Coverage spans energy storage systems including batteries and supercapacitors, electrocatalytic reactions for water splitting and carbon dioxide reduction, photocatalytic solar conversion, biomass upgrading, environmental pollutant degradation, and biomedical applications like targeted drug delivery and tumor therapy. Readers will find: Detailed synthesis methods for oxides, sulfides, phosphides, nitrides, and selenides with morphology control and defect engineering strategies Multi-scale characterization techniques correlating crystal structure, electronic properties, and surface chemistry with electrochemical performance and catalytic activity Performance optimization strategies for batteries and supercapacitors including capacity enhancement, cycle stability improvement, and rate performance advancement Electrocatalyst design principles for hydrogen production, oxygen evolution, carbon dioxide conversion, and nitrogen reduction with mechanism analysis Integration of experimental approaches with theoretical calculations including density functional theory and machine learning for materials discovery This essential reference serves materials scientists, energy chemists, environmental engineers, and battery technologists seeking comprehensive guidance from material design to practical deployment. The book provides foundational insights for newcomers while inspiring innovative directions for experienced researchers advancing sustainable technologies.