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Single-Atom Nanozyme Based on Nanoengineered Fe-N-C Catalyst with Superior Peroxidase-Like Activity for
Nan Cheng1, Jin-Cheng Li1, Dong Liu1
1School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA.
Abstract:
Single-atom catalysts are becoming a hot research topic owing to their unique characteristics of maximum specific activity and atomic utilization. Herein, a new single-atom nanozyme (SAN) based on single Fe atoms anchored on N-doped carbons supported on carbon nanotube (CNT/FeNC) is proposed. The CNT/FeNC with robust atomic Fe-Nx moieties is synthesised, showing superior peroxidase-like activity. Furthermore, the CNT/FeNC is used as the signal element in a series of paper-based bioassays for ultrasensitive detection of H2 O2 , glucose, and ascorbic acid. The SAN provides a new type of signal element for developing various biosensing techniques.
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