Journal
SMALL
Volume 15, Issue 48, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201901485
Keywords
Fe-N-C catalysis; paper bioassays; peroxidase-like activity; single-atom nanozyme
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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-N-x 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 H2O2, glucose, and ascorbic acid. The SAN provides a new type of signal element for developing various biosensing techniques.
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