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Single‐Atom Nanozyme Based on Nanoengineered Fe–N–C Catalyst with Superior Peroxidase‐Like Activity for Ultrasensitive Bioassays
Author(s) -
Cheng Nan,
Li JinCheng,
Liu Dong,
Lin Yuehe,
Du Dan
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201901485
Subject(s) - catalysis , carbon nanotube , ascorbic acid , atom (system on chip) , biosensor , nanotechnology , peroxidase , materials science , carbon fibers , combinatorial chemistry , carbon atom , bioassay , chemistry , nuclear chemistry , organic chemistry , enzyme , composite number , computer science , food science , alkyl , composite material , embedded system , biology , genetics
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 H 2 O 2 , glucose, and ascorbic acid. The SAN provides a new type of signal element for developing various biosensing techniques.