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Microchimica Acta

, 186:789 | Cite as

A coaxial nanocable textured by a cerium oxide shell and carbon core for sensing nitric oxide

  • Guorong Hou
  • Yanjing Yun
  • Minqiang Wang
  • Ying Wang
  • Hao Chen
  • Longcheng Zhang
  • Feng Wang
  • Qingyou Xia
  • Yang Liu
  • Zhisong LuEmail author
  • Shu-Juan BaoEmail author
Original Paper
  • 56 Downloads

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 abstract

Schematic 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.

Keywords

Electrospinning Voltammetric determination Biosensor Aspergillus flavus 

Notes

Acknowledgements

This work is financially supported by National Key R&D Program of China (2017YFC1600900), the National Natural Science Foundation of China (21972111, 21773188), Natural Science Foundation of Chongqing (cstc2018jcyjAX0714), Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Chongqing Key Laboratory for Advanced Materials and Technologies.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests. This article does not contain any studies with human or animal subjects. Informed consent was obtained from all individual participants include in the study.

Supplementary material

604_2019_3839_MOESM1_ESM.doc (4 mb)
ESM1 (DOC 4052 kb)

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Institute for Clean Energy and Advanced Materials, School of Materials and EnergySouthwest UniversityChongqingPeople’s Republic of China
  2. 2.State Key Laboratory of Silkworm Genome BiologySouthwest UniversityChongqingPeople’s Republic of China
  3. 3.Chongqing Engineering and Technology Research Center for Novel Silk MaterialsSouthwest UniversityChongqingPeople’s Republic of China
  4. 4.Institute of Food Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing, Ministry of AgricultureHaidian DistrictPeople’s Republic of China

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