Novel biosynthesis of silver nanoparticles (SNPs) using Chrysosporium sps. and Aspergillus sps.

Authors

• Kalpana Kanchan ^{1, 2}
• S. Gupta ^{1, 2}
• G.P. Satsangi ^{1, 2}
• J.N. Shrivastava ^{1, 2}

1. Microbiology Lab., Department of Botany,
2. Dayalbagh Educational Institute, Dayalbagh, Agra- 282 110, India

Abstract

Interaction of Chrysosporium sps. and Aspergillus sps. with aqueous AgNO₃ was investigated for synthesis of silver nanoparticles. Biological reduction and extracellular synthesis of silver nanoparticles in 28 hour at 27⁰C and pH 5.6 was done. The nanometallic dispersion was characterized by surface plasmon absorbance measuring at 424 – 530 nm for Ag nanoparticles. High resolution transmission electron microscopy showed the formation of silver nanoparticles in magnification of 50-100 nm. XRD analysis of the silver nanoparticles confirmed the formation of silver nanoparticles at average size of 29.18 nm.

Keywords

• biosynthesis
• Chrysosporium
• Aspergillus
• Surface plasmon absorbance
• Silver nanoparticles