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Fusarium oxysporum fungal strain was screened and found to be successful for the inter- and extracellular production of platinum nanoparticles. Nanoparticle formation was visually observed, over time, by the colour of the extracellular solution and/or the fungal biomass turning from yellow to dark brown, and their concentration was determined from the(More)
A mechanism for the bioreduction of H2PtCl6 and PtCl2 into platinum nanoparticles by a hydrogenase enzyme from Fusarium oxysporum is proposed. Octahedral H2PtCl6 is too large to fit into the active region of the enzyme and, under conditions optimum for nanoparticle formation (pH 9, 65°C), undergoes a two-electron reduction to PtCl2 on the molecular surface(More)
The unusual and novel properties of metal nanoparticles are highly sought after in a number of new and existing industries. Current chemical methods of nanoparticle synthesis have shown limited success and it is expected that the use of a biological approach may overcome many of these obstacles. The exploitation of microorganisms for the biosynthesis of(More)
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