Co3O4 nanostructures on flexible carbon cloth for crystal plane effect of nonenzymatic electrocatalysis for glucose

Jianan Xu; Fenghua Li; Dandan Wang; Mian Hasnain Nawaz; Qingbo An; Dongxue Han; Li Niu

doi:10.1016/j.bios.2018.07.039

Co₃O₄ nanostructures on flexible carbon cloth for crystal plane effect of nonenzymatic electrocatalysis for glucose

Biosens Bioelectron. 2019 Jan 1:123:25-29. doi: 10.1016/j.bios.2018.07.039. Epub 2018 Jul 18.

Authors

Jianan Xu¹, Fenghua Li², Dandan Wang², Mian Hasnain Nawaz³, Qingbo An², Dongxue Han⁴, Li Niu⁵

Affiliations

¹ State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; University of Chinese Academy of Sciences, Beijing 100039, PR China.
² State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
³ State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Pakistan.
⁴ State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; Center for Advanced Analytical Science, c/o School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China. Electronic address: [email protected].
⁵ State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; Center for Advanced Analytical Science, c/o School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China. Electronic address: [email protected].

PMID: 30292075
DOI: 10.1016/j.bios.2018.07.039

Abstract

This work accounts the influence of facet effect of Co₃O₄ nanocrystals towards nonenzymatic electrocatalysis of glucose induced by different crystal planes modified on carbon cloth (CC) electrode. Tuning the molar ratio of precursor compounds during hydrothermal synthesis of Co₃O₄, followed by thermal decomposition protocols, different crystal structure including nanocubes, nanothorns, nanooctahedrons and nanosheets were obtained with respective {001}, {110}, {111} and {112} facets. The electrochemical results of these different Co₃O₄ crystals demonstrate that the nanooctahedron with crystal plane of {111} displays the best nonenzymatic electro-catalytic glucose activity with widest linear range (0.5-1000 μM), highest sensitivity (246.8 μA mM^-1) and detection limit of 0.012 μM (S/N = 3). Interestingly, the electrocatalytic activity for nonenzymatic electro-catalytic glucose is ranked in the order of {111} > {112} > {110} > {001}.

Keywords: Carbon cloth electrode; Co(3)O(4); Crystal plane effect; Electrocatalysis; Nonenzymatic glucose sensor.

MeSH terms

Biosensing Techniques*
Carbon / chemistry
Catalysis
Cobalt / chemistry*
Electrodes
Glucose / chemistry
Glucose / isolation & purification*
Limit of Detection
Nanoparticles / chemistry*
Nanostructures / chemistry
Oxides / chemistry*

Substances

Oxides
Cobalt
Carbon
Glucose
cobalt oxide