NANOPARTICLES UNVEILED: A COMPREHENSIVE REVIEW OF CLASSIFICATION, PROPERTIES, SYNTHESIS, AND APPLICATIONS

Nanoparticles, defined as particles with dimensions ranging from 1 to 100 nm, represent a groundbreaking domain of nanotechnology. NPs have immense importance across various scientific disciplines and industries. NPs can be classified into zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) structures based on their dimensions. NPs are also classified into carbon, semiconductors, ceramics, polymers, and metal NPs based on their materials. NPs exhibit remarkable physicochemical properties, such as high surface area-to-volume ratios, exceptional thermal conductivity, and catalytic activity, making them crucial in fields such as materials science, medicine, and environmental engineering. Nanoparticles can be synthesized through both top-down approaches, where bulk materials are broken down into smaller particles, and bottom-up methods, involving the assembly of atomic or molecular components. Their applications are diverse and include drug delivery systems, advanced catalysts, nanoelectronics, and environmental remediation technologies, demonstrating their pivotal role in shaping our technological landscape.