Preparation and Characterization of Additional Metallic Element-Containing Tubular Iron Oxides of Bacterial Origin.

ABSTRACT: Biogenic microtubular iron oxides (BIOXs) derived from Leptothrix spp. are known as promising multifunctional materials for industrial applications such as ceramic pigments and catalyst carriers. Here, we report unprecedented BIOX products with additive depositions of various metallic elements prepared by a newly devised "two-step" method using an artificial culture system of Leptothrix cholodnii strain OUMS1; the method comprises a biotic formation of immature organic sheaths and subsequent abiotic deposition of Fe and intended elements on the sheaths. Chemical composition ratios of the additional elements Al, Zr, and Ti in the respective BIOXs were arbitrarily controllable depending on initial concentrations of metallic salts added to reaction solutions. Raman spectroscopy

SUBMITTER: Tamura K 

PROVIDER: S-EPMC7594126 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature