Heterogeneous Single Atom Catalyst: A New Type of Artificial Enzyme

Subjects: Chemistry >> Inorganic Chemistry submitted time 2018-10-04

Chao, Zhao Can, Xiong Man, Qiao Tongwei, Yuan Jing, Wang Yunteng, Qu XiaoQian, Wang Fangyao, Zhou Zhijun, Li Qian, Xu Shiqi, Wang Min, Chen Wenyu, Wang Yafei, Li Yuen, Wu Yadong, Li

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

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