Subjects: Chemistry >> Inorganic Chemistry submitted time 2018-10-04
Abstract: Herein, we report a high-temperature gas-migration strategy to fabricate a heterogeneous single iron atom catalyst and demonstrate its excellent natural enzymes-like activity (defined as single atom enzymes, SAEs). The results reveal that the localized well-defined FeN4 sites of Fe SAEs is highly similar to the active metal centers of the natural heme-containing enzymes. The Fe SAEs exhibits superduper peroxidase, oxidase and catalase enzyme-like activities, exceeding that Fe3O4 nanozymes by a factor of 40. More importantly, Fe SAEs could effectively activates hydrogen peroxide (H2O2) in a hydroxyl free radicals (•OH) pathway, which makes it useful as a heterogeneous Fenton-like system to deal with the increasing environmental pollution. Our findings open up a new family of artificial material that mimics the natural enzymes.
Peer Review Status:Awaiting Review