Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 807, Taiwan.
Department of Chemical Engineering, National Cheng Kung University, Tainan City, 701, Taiwan.
Mikrochim Acta. 2018 Jul 10;185(8):371. doi: 10.1007/s00604-018-2915-2.
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 HO. The hydrothermally treated electrode performs better. Its electrochemical surface is 3.7 × 10 mA cm, which is larger than that of a nitrogen plasma treated electrode (8.9 × 10) or a non-doped CNF (2.45 × 10 mA cm). The hydrothermally treated CNF with rough surface and a complex profile with doped N has a higher sensitivity (357 μA∙mM∙cm), a lower detection limit (0.62 μM), and a wider linear range (0.01-0.71 mM) than N-CNF 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 HO. Graphical abstract Nitrogen-doped carbon nanofibers prepared by an electrospinning method followed by a hydrothermal reaction (N-CNF) or nitrogen plasma treatment (N-CNF) are directly used as non-enzymatic amperometric HO sensors.
氮掺杂碳纳米纤维（CNF）通过静电纺丝法制备，随后进行水热反应或氮等离子体处理，以获得用于 HO 的非酶安培检测的电极。经水热处理的电极性能更佳。其电化学表面积为 3.7×10 mA·cm，大于经氮等离子体处理的电极（8.9×10）或未掺杂 CNF（2.45×10 mA·cm）。具有粗糙表面和复杂掺杂 N 形态的水热处理 CNF 具有更高的灵敏度（357 μA·mM·cm）、更低的检测限（0.62 μM）和更宽的线性范围（0.01-0.71 mM），工作电位为-0.4 V（相对于 Ag/AgCl）。该电极在分析加标 HO 的牛奶样品时具有较高的回收率。
