Open AccessBiosynthesis of spherical gold nanoparticles and their characterization
Author(s) -
N. Parushuram,
S. Asha,
R. Ranjana,
K. S. Harisha,
M. Shilpa,
B. Narayana,
Y. Sangappa
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/577/1/012007
Subject(s) - chloroauric acid , colloidal gold , dynamic light scattering , transmission electron microscopy , surface plasmon resonance , materials science , nanoparticle , aqueous solution , diffraction , chemical engineering , analytical chemistry (journal) , nanotechnology , nuclear chemistry , chemistry , optics , chromatography , physics , engineering
Colloidal gold nanoparticles (AuNPs) were synthesized by the reduction of chloroauric acid (HAuCl 4 .H 2 O) using silk sericin (SS) extracted from Bombyx mori silk as a biotemplate. Synthesized AuNPs were characterized by using the various analytical techniques. UV-visible (UV-vis) study confirms the formation of AuNPs in aqueous SS solution showing the surface plasmon resonance (SPR) band at λ = 530 nm. The X-ray diffraction (XRD) study revealed the crystalline phase of gold nanoparticles with face centered cubic (FCC) structure. Transmission electron microscopy (TEM) images showed the formed AuNPs are spherical in shape with diameter around 8 nm. Dynamic light scattering (DLS) experiment also confirmed the formation of AuNPs in SS solution with average size 10 nm.