Reduction of platinum (IV) ions to elemental platinum nanoparticles by anaerobic sludge.

ABSTRACT:

Background

The future supply of platinum group metals (PGM) is at risk because of their scarcity combined with a high demand. Thus recovery of platinum (Pt) from waste is an option worthy of study to help alleviate future shortages. This research explored the microbial reduction of platinum (Pt). The ability of anaerobic granular sludge to reduce Pt(IV) ions under different physiological conditions was studied.

Results

X-Ray diffraction (XRD) and transmission electron microscope (TEM) analyses demonstrated the capacity of the microbial mixed culture to reduce Pt(IV) to Pt(0) nanoparticles, which were deposited on the cell-surface and in the periplasmic space. Ethanol supported the biologically catalyzed Pt(IV) reduction, meanwhile other electron donors; hydrogen (H₂

SUBMITTER: Simon-Pascual A 

PROVIDER: S-EPMC6101971 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature