Flower-like NiCo2O4 nanoflake surface covered on carbon nanolayer for high-performance electro-oxidation of non-enzymatic glucose biosensor. (December 2022)

• Record Type: Journal Article
• Authors: Sivakumar, M.; Vivekanandan, A.K.; Panomsuwan, G.; Veeramani, V.; Chen, S.-H.; Jiang, Z.; Maiyalagan, T.
• Is Part Of: Materials today chemistry. Volume 26(2022)
• Publication Date: 2022-12
• Subjects: NiCo2O4 nanoflake -- C/NiCo2O4 nanoflake -- Dopamine-derived carbon -- Glucose -- Electrochemical sensor; Chemistry -- Periodicals; Materials -- Research -- Periodicals; Materials science -- Periodicals; Chemistry; Materials -- Research; Electronic journals; Periodicals; 660.282
• DOI: 10.1016/j.mtchem.2022.101156
• Languages: English
• ISSNs: 2468-5194

Abstract

Abstract: The high porous nickel cobalt oxide flower-like nanoflake (NF) structured materials with (C/NiCo2 O4 -1 and C/NiCo2 O4 -2) and without (NiCo2 O4 ) the presence of dopamine as a carbon source were synthesized by a simple hydrothermal method for non-enzymatic glucose sensing. The structural and morphological characteristics of as-synthesized materials were confirmed using transmission electron microscopy, field emission scanning electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction analysis. The transmission electron microscopy analysis of C/NiCo2 O4 -1 NF materials reveals that a flower-like structure of NiCo2 O4 NF covered over the surface of carbon in the hybrid composite. The electrochemical properties of as-synthesized material were determined from cyclic voltammetry and chronoamperometry analysis. Among the NiCo2 O4 NF, C/NiCo2 O4 -1 NF, and C/NiCo2 O4 -2 NF structured materials, the C/NiCo2 O4 -1 NF exhibits a remarkable electrochemical performance toward glucose oxidation with a high linear range (0.0001–15.28 mM), high-sensitivity (779.35 μA mM −1 cm −2 ), and ultra-low detection (86 μM). Moreover, the C/NiCo2 O4 -1 NF electrode indicates excellent recoveries of glucose in human blood serum samples. The obtained results illustrate that the good features of C/NiCo2 O4 -1 NF electrode materials have the potential to be used as a non-enzymatic glucose sensor. Graphical abstract: Flower-like NiCo2 O4 -1 nanoflake surface covered carbon nanolayer for the excellent electrochemical detection of non-enzymatic glucose biosensor. Image 1 Highlights: Flower-like NiCo2 O4 nanoflake (NF) was synthesized by hydrothermal methods. Flower-like structure of NiCo2 O4 NF surface covered carbon layer as a carbon source of dopamine in the hybrid composite. C/NiCo2 O4 -1 NF@GCE exhibit notable detection of glucose with high linear range (0.0001–15.28 mM), sensitivity (779.35 µAmM −1 cm −2 ), and ultra-low detection (86 µM). C/NiCo2 O4 -1 NF@GCE exhibits excellent recoveries of glucose in human blood serum samples.