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Hydrothermal and plasma nitrided electrospun carbon nanofibers for amperometric sensing of hydrogen peroxide
Microchimica Acta ( IF 5.7 ) Pub Date : 2018-07-10 , DOI: 10.1007/s00604-018-2915-2
Yuan-Ping Lyu , Yi-Shan Wu , Tzu-Pei Wang , Chien-Liang Lee , Meng-Yin Chung , Chieh-Tsung Lo

AbstractNitrogen-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 H2O2. 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-CNFP 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 H2O2. Graphical abstractNitrogen-doped carbon nanofibers prepared by an electrospinning method followed by a hydrothermal reaction (N-CNFht) or nitrogen plasma treatment (N-CNFP) are directly used as non-enzymatic amperometric H2O2 sensors.

中文翻译:

用于过氧化氢电流检测的水热和等离子体氮化电纺碳纳米纤维

摘要 采用静电纺丝法制备氮掺杂碳纳米纤维(CNFs),然后通过水热反应或氮等离子体处理获得用于非酶促电流检测 H2O2 的电极。水热处理的电极性能更好。其电化学表面为 3.7 × 10-3 mA cm-2,大于氮等离子体处理电极 (8.9 × 10-4) 或非掺杂 CNF (2.45 × 10-4 mA cm-2)。具有粗糙表面和掺杂 N 的复杂轮廓的水热处理 CNF 具有更高的灵敏度 (357 μA∙mM−1∙cm−2)、较低的检测限 (0.62 μM) 和更宽的线性范围 (0.01–0.71 mM ) 比 N-CNFP 在 -0.4 V 的工作电位(相对于 Ag/AgCl)。该电极在用于分析加有 H2O2 的牛奶样品时具有很高的回收率。
更新日期:2018-07-10
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