Rhodium semiconductor material enables advanced optoelectronics, capacitor electrodes, and barrier layers with exceptional conductivity, high work function, superior UV-IR reflectivity, and corrosion resistance for next-generation devices. This process involves a transition from mechanical preparation to complex and hazardous chemistry, culminating in the refining of one of the. The purpose of this paper is to provide an in-depth review of plasmonic metal nanoparticles made from rhodium, platinum, gold, or silver. We describe fundamental concepts, synthesis methods, and optical sensing applications of these nanoparticles. Plasmonic metal nanoparticles have received a lot. Plasmonic metal nanoparticles have received a lot of interest due to various applications, such as optical sensors, single-molecule detection, single-cell detection, pathogen detection, environmental contaminant monitoring, cancer diagnostics, biomedicine, and food and health safety monitoring. To provide a useful tool for Rh isolation, a novel tridentate ligand utilizing soft N and S donors was designed to specifically extract Rh. The synthesis, complexation kinetics, and. Hydrometallurgical extraction of rhodium is very challenging as it forms strongly hydrated and kinetically inert complexes in aqueous solution. In our research, rhodium was extracted from aqueous chloride media using some commercial ion-exchange resins, such as Sumichelate MC-10 and Diaion.