Bimetallic systems have garnered significant interests due to their application in catalysis, electronic and optical properties. They have enhanced catalytic properties as compared to pure metallic systems. The synergistic effects between two different metal atoms lead to improved activity, selectivity and stability. For example, bimetallic catalysts exhibit better charge transfer and modified electronic properties, helping for more efficient catalytic activity. Bimetallic catalysts such as PtNi demonstrate efficiency in oxygen reduction reactions over their monometallic counterparts. Incorporation of Cu into gold catalyst improves its performance in selective oxidation reactions, such as the oxidation of glycerol to glyceric acid and CO2 by enhancing the oxygen transfer and improving the stability of gold particles on the catalyst surface. AuCu catalysts effectively activate reactants while maintaining high selectivity making them suitable for the production of useful chemicals from greenhouse gases. Cu doped gold nanoparticles have been employed in C-C coupling reactions like Sonogashira cross coupling reactions and euterium-hydrogen exchange reactions. The oxidation of alcohols, especially the conversion of primary alcohols selectively to aldehydes, is an important step in the production of fine chemicals and valuable intermediates. Conventionally, this oxidation is carried out using stoichiometric oxygen donors like chromates or permanganates. These oxidizing agents also yield significant amounts of by products and toxic products. Numerous experimental studies have been done over the past two decades focused on developing catalysts to overcome these drawbacks.