Mechanochemical-Triggered Confined Coordination of Iron-Biomass Composites for Efficient Cr(VI) Reduction Under Circumneutral pH Via Accelerated Electron Extraction.

ABSTRACT: Green and eco-friendly iron-based materials for efficient Cr(VI) removal have attracted considerable interest, but challenges related to narrow working pH ranges and iron utilization efficiency still remain. Herein, inspired by the hot-spot effect-triggered confined coordination strategy, a biomass-confined iron-based reductant (CMC-GTB/Fe^bm) is designed for Cr(VI) reduction and detoxification. Electron enrichment and confinement on biomass carriers are achieved through electron transfer mediated by coordination interactions between anchored iron species and biomass. Thus, the CMC-GTB/Fe^bm achieved 99% Cr(VI) reduction at circumneutral pH (5-9), with a maximum removal capacity of 180 mg g^-1. Under iron dosing close to the stoichiometric ratio (Fe/Cr = 3/1),

SUBMITTER: Wang Y 

PROVIDER: S-EPMC12005798 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature