title: A novel one-pot 'green' synthesis of stable silver nanoparticles using soluble starch.
abstract: Stable silver nanoparticles have been synthesized by using soluble starch as both the reducing and stabilizing agents; this reaction was carried out in an autoclave at 15 psi, 121 degrees C for 5 min. Nanoparticles thus prepared are found to be stable in aqueous solution over a period of three months at room temperature (approximately 25 degrees 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.
authors.affiliation: Nanotechnology Research Group, Central Institute for Research on Cotton Technology, Adenwala Road, Matunga, Mumbai 400 019, India. nvw75@yahoo.com
authors.forename: N
authors.initials: N
authors.lastname: Vigneshwaran
authors.forename: R P
authors.initials: RP
authors.lastname: Nachane
authors.forename: R H
authors.initials: RH
authors.lastname: Balasubramanya
authors.forename: P V
authors.initials: PV
authors.lastname: Varadarajan
mesh_terms: D000688:Amylose / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010084:Oxidation-Reduction; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013213:Starch / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D012834:Silver; D013213:Starch; D000688:Amylose