Skip to Content
Merck

Microbial synthesis of silver nanoparticles.

Journal of nanoscience and nanotechnology (2013-07-19)
Yumi Kim, Byeong-Gweon Lee, Yul Roh
ABSTRACT

The objectives of this research were to study biogenic synthesis of Ag(0) nanoparticles and to determine the effects of various experimental conditions such as silver nitrate concentrations, pHs and temperatures controlling for the optimal biosynthesis of Ag(0) nanoparticles. The metal-reducing bacteria formed 5-15 nm-sized Ag(0) nanoparticles by reduction of 0.5-1 mM silver nitrate under the conditions around 15-25 degrees C and medium pH 7.5-8.5 within 3 days of incubation. These results not only show that the bacteria enzymatically reduced Ag(I), but also offer methods for microbial synthesis of homogeneous silver nanoparticles and silver recovery from the natural environments.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Silver nanowires, diam. × L 50 nm × 6 μm, 0.5% (isopropyl alcohol suspension)
Sigma-Aldrich
Silver nanowires, diam. × L 100 nm × 6 μm, 0.5% (isopropyl alcohol suspension)
Sigma-Aldrich
Silver, colloidal, 65-75% Ag basis
Sigma-Aldrich
Silver, powder, <250 μm, 99.99% trace metals basis
Sigma-Aldrich
Silver, wool, diam. 0.05 mm, ≥99.9% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 2.0 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.127 mm, 99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 1.0 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 1.0 mm, 99.99% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 0.1 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 1.0 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.5 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, conductive paste
Sigma-Aldrich
Silver, wire, diam. 0.25 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.5 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 0.25 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 2.0 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, granular, >250 μm, 99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 2.0 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.25 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 0.025 mm, 99.9% trace metals basis