“…Metal nanoparticles generally exhibit different electromagnetic, chemical, thermal, and optical properties than their bulk counterparts because of their increased surface area and surface free energy, 5 imparting them with great potential for various applications, including as catalysts and drug delivery systems. 6,7 However, a change in properties can also lead to a change in stability when compared with bulk metals. Protective agents such as surfactants are therefore extensively used for metal nanoparticles because they adsorb at the interface and control their stability.…”