Advances in Silver Nanoparticles: Synthesis, Characterization, and Diverse Applications in Medicine, Environment,...

Silver nanoparticles (AgNPs) have gained considerable attention due to their unique physicochemical properties, such as large surface area, strong antibacterial effects, and diverse applications across multiple sectors. This review provides a comprehensive overview of different studies on the synthesis processes, characterization techniques, and broad applications of AgNPs in the pharmaceutical, environmental, and antibacterial domains. The discussion covers various synthesis methodologies, including chemical processes, physical methods, and green synthesis, highlighting their respective merits and limitations. Important characterization techniques include X-ray diffraction (XRD), which determines the crystalline structure; scanning electron microscopy (SEM), which examines surface morphology; transmission electron microscopy (TEM), which reveals internal structure through high-resolution imaging; and dynamic light scattering (DLS), which determines particle size distribution. Ultraviolet-visible (UV-Vis) spectroscopy is also used to assess shape, size, and colloidal stability. This review further discusses the applications of AgNPs, including drug delivery, cancer treatment, wound healing, and antimicrobial and antiviral therapies. Although AgNPs exhibit several advantages, concerns such as toxicity and cost-effective production persist. This study suggests that with further research, AgNPs could play a crucial role in addressing significant challenges in the health and environmental sectors.