Nanoparticles, defined by at least one dimension in the nanometer range, exhibit exceptional physical, chemical, and biological properties that have led to groundbreaking advancements in medicine, electronics, and catalysis. Their synthesis is a critical step in optimizing their properties for specific applications. This review explores the major nanoparticle fabrication techniques, categorizing them into physical, chemical, and biological methods. Physical methods, such as gas-phase condensation and sputtering, enable large-scale production but often require high-energy inputs, sophisticated equipment, and may introduce impurities. Chemical methods, including precipitation, sol-gel, and hydrothermal synthesis, provide better control over nanoparticle size, shape, and composition but can involve complex reaction mechanisms and require extensive purification steps. Biological synthesis, utilizing microorganisms, plant extracts, or enzymes, offers a sustainable and eco-friendly alternative, yet scalability and reproducibility remain challenges.Compared to existing literature, this review highlights recent advancements in hybrid approaches that integrate multiple synthesis strategies to improve efficiency, purity, and scalability. Emerging techniques, such as laser ablation-assisted chemical synthesis and bio-inspired hybrid methods, have demonstrated potential in overcoming the limitations of conventional approaches. By critically analyzing the advantages, limitations, and recent progress in nanoparticle synthesis, this review provides a comprehensive understanding of current trends and future prospects in the field. As research continues, the development of novel synthesis techniques with enhanced precision, reduced environmental impact, and cost-effectiveness is expected to drive further innovation in nanotechnology, expanding its applications across diverse industries.
Vinukonda et al. (Wed,) studied this question.