title: A novel extracellular synthesis of monodisperse gold nanoparticles using marine alga, Sargassum wightii Greville.
abstract: The process of development of reliable and eco-friendly metallic nanoparticles is an important step in the field of nanotechnology. To achieve this use of natural sources like biological systems becomes essential. In the present, work we have investigated extracellular biosynthesis of gold nanoparticles using Sargassum wightii and have achieved rapid formation of gold nanoparticles in a short duration. The UV-vis spectrum of the aqueous medium containing gold ion showed peak at 527 nm corresponding to the plasmon absorbance of gold nanoparticles. Transmission electron microscopy (TEM) showed formation of well-dispersed gold nanoparticles in the range of 8-12 nm. X-ray diffraction (XRD) spectrum of the gold nanoparticles exhibited Bragg reflections corresponding to gold nanoparticles.
authors.affiliation: Department of Zoology, Thiruvalluvar University, Vellore 632004, India. gsvelu@gmail.com
authors.forename: G
authors.initials: G
authors.lastname: Singaravelu
authors.forename: J S
authors.initials: JS
authors.lastname: Arockiamary
authors.forename: V Ganesh
authors.initials: VG
authors.lastname: Kumar
authors.forename: K
authors.initials: K
authors.lastname: Govindaraju
mesh_terms: D005110:Extracellular Space / Q000737:chemistry / Q000378:metabolism*; D006046:Gold / Q000737:chemistry*; D017612:Gold Compounds / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D044647:Sargassum / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D020349:Surface Plasmon Resonance; D014961:X-Ray Diffraction
chemical_list: D017612:Gold Compounds; C038016:gold chloride; D006046:Gold