Patents: January 2011

摘要

A cost-effective method for producing 0.1–50 nm nanoparticles of pgms, specifically Pt, is claimed. Aerobically-cultured iron-reducing bacteria such as?Shewanella putrefaciens?are contacted under aerobic conditions with a solution of Pt ions and either an organic acid or H2(g)?as electron donor. Pt nanoparticles are precipitated on the surface of the bacterial cells, which can in turn be deposited on a support such as diatomaceous earth, and are suitable for use as hydrogen isotope exchange reaction catalysts.