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This book presents a comprehensive and structured exploration of green and sustainable extraction of bioactive organic compounds, highlighting how modern extraction technologies can replace conventional, solvent-intensive methods to achieve higher efficiency, safety, and environmental responsibility. It explains what bioactive compounds are, where they are sourced from, how they are extracted using traditional and advanced techniques, and how these extracts are applied in pharmaceuticals, nutraceuticals, cosmetics, and food industries. By integrating chemical principles, real-world case...

The book explores the fundamentals of nanochemistry and its role in modern science. It discusses how nanoscale materials exhibit unique properties due to quantum confinement, surface effects, and structural control. Various synthesis methods such as sol-gel, hydrothermal, and green synthesis are highlighted along with characterization techniques like XRD, SEM, TEM, FTIR, and UV-Vis. The focus is on doped and composite photocatalysts that enhance visible-light absorption, charge separation, and catalytic performance. Applications include environmental remediation, hydrogen production, CO2...