Bismuth nanoparticles (Bi NPs) and nanostructures are being investigated for their potential technological applications, resulting in an ever-increasing number of publications on their fabrication and optical properties . Pharmaceutical and metallurgical applications of bismuth have gained significant attention in recent years Fermi surface, bismuth is also of great interest due to its size-induced shift from semi-metallic to semiconductor . By reducing bismuth's dimension to its nanoscale level, a quantum confinement effect converts semi-metal bismuth to a semiconductor, making bismuth especially useful in optoelectronics and thermoelectric . A great deal of effort has been expended in order to control the mean size, shape, and surface state of bismuth nanoparticles since they exhibit optical, electrical, and catalytic properties that are affected by size and shape