Gold Nanoparticles in Sulfolobus islandicus Biomass for Technological Applications (original) (raw)

Advanced Science, Engineering and Medicine, 2015

Abstract

The synthesis of gold nanoparticles by cells of the thermoacidophilic archaeon Sulfolobus islandicus for technological purposes has been studied. A complex of optical and analytical methods has been used in order to characterize produced nanoparticles. It was shown that in the biomass of Sulfolobus islandicus the extracellular as well as intracellular formation of gold nanoparticles of spherical shape with sizes in the range of 20–80 nm (50 nm average) takes place. Energy-dispersive analysis of X-rays was used for examining the elemental content of the Sulfolobus islandicus biomass. Neutron activation analysis and atomic absorption spectrometry have been applied for characterizing the dynamics of gold accumulation in the Sulfolobus islandicus biomass. It was shown that the growing formation of gold nanoparticles in the biomass of Sulfolobus islandicus takes place mainly at few hours. The ultrasound was applied for intensification production of gold nanoparticles by biomass of Sulfol...

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