A novel one-pot'green'synthesis of stable silver nanoparticles using soluble starch

摘要

Stable silver nanoparticles have been synthesized by using soluble starch as both the reducing and stabilizing agentsthis reaction was carried out in an autoclave at 15 psi,121 deg C for 5 min.Nanoparticles thus prepared are found to be stable in aqueous solution over a period of three months at room temperature(approx 25 deg C).The size of these nanoparticles was found to be in the range of 10-34 nm as analyzed using transmission electron micrographs.The X-ray diffraction analysis revealed the face-centred cubic(fcc)geometry of silver nanoparticles.Iodometric titration confirmed the entrapment of silver nanoparticles inside the helical amylose chain.These silver nanoparticles embedded in soluble starch produced a typical emission peak at 553 nm when excited at 380 nm.The use of environmentally benign and renewable materials like soluble starch offers numerous benefits of eco-friendliness and compatibility for pharmaceutical and biomedical applications.