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Biosynthesis and characterization of Au‐nanostructures by metal tolerant fungi
Author(s) -
Gupta Saurabh,
Devi Sunita,
Singh Karamjit
Publication year - 2011
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.201100157
Subject(s) - transmission electron microscopy , nanoparticle , metal , characterization (materials science) , nanostructure , biosynthesis , nanotechnology , materials science , colloidal gold , morphology (biology) , scanning electron microscope , diffraction , chemical engineering , chemistry , crystallography , biology , metallurgy , organic chemistry , optics , enzyme , physics , composite material , engineering , genetics
Microorganisms being eco‐friendly and encompassing special features are widely employed in the biosynthesis of different metal nanoparticles (NPs). In the present study, the potential of different fungal strains has been explored for the synthesis of various morphologies of gold nanostructures. Preliminary confirmation of nanosized particles formation has been done with visual observation as the synthesized gold nanoparticles exhibited a variety of colours covering whole visible spectra. Crystallographic and morphological characterization of synthesized nano‐materials associated with different fungal strains have been done using X‐ray diffraction (XRD) and transmission electron microscope (TEM). Nanoparticles morphology dependence on different fungal strains has been studied and described in detail. A wide variation in shape and size of gold nanoparticles with different strains has been reported as a function of strain characteristics. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)