Nonenzymatic Glucose Sensor Based on Porous Co3O4 Nanoneedles

Jianchun Sun; Hongjing Zhao; Zhongchang Wang

doi:10.1155/2022/6442241

Nonenzymatic Glucose Sensor Based on Porous Co₃O₄ Nanoneedles

J Environ Public Health. 2022 Oct 8:2022:6442241. doi: 10.1155/2022/6442241. eCollection 2022.

Authors

Jianchun Sun¹, Hongjing Zhao², Zhongchang Wang^{1

3}

Affiliations

¹ College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China.
² Chongqing Ecological Environment Minitoring Center, Chongqing 400030, China.
³ International Iberian Nanotechnology Laboratory, Braga 4715-330, Portugal.

Abstract

Herein, porous Co₃O₄ nanoneedle arrays were synthesized on nickel (Ni) foam (Co₃O₄ NNs/NF) by one-step hydrothermal method. Some electrochemical methods were used to investigate its nonenzymatic glucose sensing performance in alkaline solution. The results show that the sensitivity of Co₃O₄ NNs/NF electrode to glucose is 4570 μA mM^-1 cm^-2. The linear range is 1 μM-0.337 mM, and the detection limit is 0.91 μM (S/N = 3). It also displays good selectivity and repeatability for glucose. The good electrochemical sensing performance of Co₃O₄ NNs/NF based sensor for glucose can be attributed to interconnected porous structure and large specific surface area of Co₃O₄.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biosensing Techniques* / methods
Cobalt
Glucose / chemistry
Nickel* / chemistry
Oxides
Porosity

Substances

Oxides
cobalt tetraoxide
Cobalt
Nickel
Glucose