Wang, F.; Li, Y.; Yan, C.; Ma, Q.; Yang, X.; Peng, H.; Wang, H.; Du, J.; Zheng, B.; Guo, Y. Bismuth-Decorated Honeycomb-like Carbon Nanofibers: An Active Electrocatalyst for the Construction of a Sensitive Nitrite Sensor. Molecules2023, 28, 3881.
Wang, F.; Li, Y.; Yan, C.; Ma, Q.; Yang, X.; Peng, H.; Wang, H.; Du, J.; Zheng, B.; Guo, Y. Bismuth-Decorated Honeycomb-like Carbon Nanofibers: An Active Electrocatalyst for the Construction of a Sensitive Nitrite Sensor. Molecules 2023, 28, 3881.
Wang, F.; Li, Y.; Yan, C.; Ma, Q.; Yang, X.; Peng, H.; Wang, H.; Du, J.; Zheng, B.; Guo, Y. Bismuth-Decorated Honeycomb-like Carbon Nanofibers: An Active Electrocatalyst for the Construction of a Sensitive Nitrite Sensor. Molecules2023, 28, 3881.
Wang, F.; Li, Y.; Yan, C.; Ma, Q.; Yang, X.; Peng, H.; Wang, H.; Du, J.; Zheng, B.; Guo, Y. Bismuth-Decorated Honeycomb-like Carbon Nanofibers: An Active Electrocatalyst for the Construction of a Sensitive Nitrite Sensor. Molecules 2023, 28, 3881.
Abstract
Existence of carcinogenic nitrite in food has attracted much attention, however, it is still a challenge to develop nitrite sensor with higher sensitivity and selectivity to enlarge its applications in daily life. Herein, one-dimensional honeycomb-like carbon nanofibers (HCNFs) were synthesized with an electrospun technology, and its specific structure enables the controlling growth and highly dispersed bismuth nanoparticles (Bi NPs) on its surface, which endows the obtained Bi/HCNFs with excellent electrocatalytic activity toward nitrite oxidation. By modifying Bi/HCNFs on screen-printed electrode, the constructed Bi/HCNFs electrode (Bi/HCNFs-SPE) can be used for nitrite detection in one drop of solution, and exhibits higher sensitivity (1269.9 μA mM-1 cm-2) in a wide range of 0.1~800 μM with lower detection limit (19 nM). Impressively, the Bi/HCNFs-SPE has been successfully used for nitrite detection in food and environment samples, the satisfactory property and recovery indicates its feasibility in further practical applications.
Keywords
nitrite sensor; honeycomb-like carbon nanofibers; Bi nanoparticles; nitrite detection
Subject
Chemistry and Materials Science, Applied Chemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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