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Bioreductive deposition of platinum nanoparticles on the bacterium Shewanella algae

2006; Elsevier BV; Volume: 128; Issue: 3 Linguagem: Inglês

10.1016/j.jbiotec.2006.11.014

1873-4863

Yasuhiro Konishi, Kaori Ohno, Norizoh Saitoh, Toshiyuki Nomura, Shinsuke Nagamine, Hajime Hishida, Yoshio Takahashi, Tomoya Uruga,

Quantum Dots Synthesis And Properties

An environmentally friendly method using the metal ion-reducing bacterium Shewanella algae was proposed to deposit platinum nanoparticles. Resting cells of S. algae were able to reduce aqueous PtCl62− ions into elemental platinum at room temperature and neutral pH within 60 min when lactate was provided as the electron donor. Biogenic platinum nanoparticles of about 5 nm were located in the periplasm—a preferable, cell surface location for easy recovery of biogenic nanoparticles.