Achieving pH-universal oxygen electrolysis via synergistic density and coordination tuning over biomass-derived Fe single-atom catalyst.

ABSTRACT: Renewable biomass serves as a cost-effective source of carbon matrix to carry single-atom catalysts (SACs). However, the natural abundant oxygen in these materials hinders the sufficient dispersion of element with high oxygen affinity such iron (Fe). The lowered-density and oxidized SACs greatly limits their catalytic applications. Here we develop a facile continuous activation (CA) approach for synthesizing robust biomass-derived Fe-SACs. Comparing to the traditional pyrolysis method, the CA approach significantly increases the Fe loading density from 1.13 atoms nm^-2 to 4.70 atoms nm^-2. Simultaneously, the CA approach induces a distinct coordination tuning from dominated Fe-O to Fe-N moieties. We observe a pH-universal oxygen reduction reaction (ORR) performance over

SUBMITTER: Guo W 

PROVIDER: S-EPMC11937382 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature