Carboxyl silver nanoparticles are widely used in biomedical applications due to their antimicrobial properties. They are incorporated into wound dressings and medical coatings to prevent infections and promote healing. In diagnostics, these nanoparticles enhance the sensitivity of biosensors for detecting pathogens or biomarkers. They are also utilized in drug delivery systems to improve the targeted release of therapeutic agents. Additionally, their conductive properties make them valuable in the development of advanced electronic and optical devices. In environmental applications, they are employed in water purification systems to eliminate harmful microorganisms.