Hydrothermal and plasma nitrided electrospun carbon nanofibers for amperometric sensing of hydrogen peroxide

Nitrogen-doped carbon nanofibers (CNFs) were prepared by an electrospinning method, this followed by a hydrothermal reaction or nitrogen plasma treatment to obtain electrode for non-enzymatic amperometric sensing of H 2 O 2 . The hydrothermally treated electrode performs better. Its electrochemical...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2018-08, Vol.185 (8), p.371-7, Article 371
Main Authors: Lyu, Yuan-Ping, Wu, Yi-Shan, Wang, Tzu-Pei, Lee, Chien-Liang, Chung, Meng-Yin, Lo, Chieh-Tsung
Format: Article
Language:English
Subjects:
Analytical Chemistry
Carbon fibers
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Electrical measurement
Electrodes
Enzymes
Hydrogen peroxide
Hydrothermal reactions
Ion nitriding
Microengineering
Milk
Nanochemistry
Nanofibers
Nanotechnology
Nitrogen
Nitrogen plasma
Plasma physics
Short Communication
Silver chloride
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Summary:Nitrogen-doped carbon nanofibers (CNFs) were prepared by an electrospinning method, this followed by a hydrothermal reaction or nitrogen plasma treatment to obtain electrode for non-enzymatic amperometric sensing of H 2 O 2 . The hydrothermally treated electrode performs better. Its electrochemical surface is 3.7 × 10 −3  mA cm −2 , which is larger than that of a nitrogen plasma treated electrode (8.9 × 10 −4 ) or a non-doped CNF (2.45 × 10 −4  mA cm −2 ). The hydrothermally treated CNF with rough surface and a complex profile with doped N has a higher sensitivity (357 μA∙mM −1 ∙cm −2 ), a lower detection limit (0.62 μM), and a wider linear range (0.01–0.71 mM) than N-CNF P at a working potential of −0.4 V (vs. Ag/AgCl). The electrode gave high recoveries when applied to the analysis of milk samples spiked with H 2 O 2 . Graphical abstract Nitrogen-doped carbon nanofibers prepared by an electrospinning method followed by a hydrothermal reaction (N-CNF ht ) or nitrogen plasma treatment (N-CNF P ) are directly used as non-enzymatic amperometric H 2 O 2 sensors.
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-018-2915-2