| Literature DB >> 31732798 |
Guorong Hou1, Yanjing Yun1, Minqiang Wang1, Ying Wang1, Hao Chen1, Longcheng Zhang1, Feng Wang2,3, Qingyou Xia2,3, Yang Liu4, Zhisong Lu5, Shu-Juan Bao6.
Abstract
A corn-like CeO2/C coaxial cable textured by a cerium oxide shell and a carbon core was designed to sense NO. The carbon core possesses high electrical conductivity, and the CeO2 surface delivers excellent electrocatalytic activity. The sensor, typically operated at 0.8 V (vs. Ag/AgCl), exhibits a detection limit of 1.7 nM, which is 4-times lower than that of CeO2 nanotubes based one (at S/N = 3). It also displays wide linear response (up to 83 μM), a sensitivity of 0.81 μA μM-1 cm-2, and fast response (2 s). These values are highly competitive to that of a CeO2 tube (0.92 μA μM-1 cm-2 and 2 s). The sensor was used to quantify NO that is released by Aspergillus flavus. Graphical abstractSchematic representation of corn-like CeO2/C which can more sensitively and effectively detect NO released from A. flavus than when using CeO2 nanotubes, benefitting from its unique coaxial cable structure.Entities:
Keywords: Aspergillus flavus; Biosensor; Electrospinning; Voltammetric determination
Year: 2019 PMID： 31732798 DOI： 10.1007/s00604-019-3839-1
Source DB: PubMed Journal: Mikrochim Acta ISSN： 0026-3672 Impact factor: 5.833