Microbial reduction of metal-organic frameworks enables synergistic chromium removal.

摘要: Redox interactions between electroactive bacteria and inorganic materials underpin many emerging technologies, but commonly used (e.g., metal oxides) suffer from limited tunability can be challenging to characterize. In contrast, metal-organic frameworks exhibit well-defined structures, large surface areas, extensive chemical tunability, their utility as microbial substrates has not been examined. Here, we report that support the growth of metal-respiring bacterium Shewanella oneidensis, specifically through reduction Fe(III). a practical application, show cultures containing S. oneidensis reduced remediate lethal concentrations Cr(VI) over multiple cycles, pollutant removal exceeds performance either component in isolation or bio-reduced iron oxides. Our results demonstrate serve suggest they may offer an alternative oxides applications seeking combine advantages bacterial metabolism synthetic materials.