Topological transformation of microbial proteins into iron single-atom sites for selective hydrogen peroxide electrosynthesis.

ABSTRACT: The emergence of single-atom catalysts offers exciting prospects for the green production of hydrogen peroxide; however, their optimal local structure and the underlying structure-activity relationships remain unclear. Here we show trace Fe, up to 278 mg/kg and derived from microbial protein, serve as precursors to synthesize a variety of Fe single-atom catalysts containing FeN_5-xO_x (1 ≤ x ≤ 4) moieties through controlled pyrolysis. These moieties resemble the structural features of nonheme Fe-dependent enzymes while being effectively confined on a microbe-derived, electrically conductive carbon support, enabling high-current density electrolysis. A comparative analysis involving catalysts derived from eleven representative microbes reveals that the presence of 0.05 w

SUBMITTER: Xiao X 

PROVIDER: S-EPMC11685441 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature