Carbon cloth-supported flower-shaped NiCo2O4 microsphere for high-performance binder-free non-enzymatic glucose sensor

IF 4.9 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchemical Journal Pub Date : 2025-02-25 DOI:10.1016/j.microc.2025.113163

Jing Li , Jijie Shi , Hui Ren , Junjie Yang , Dan Xiao , Xiaoqin Li , Xinhui Wang , Yong Guo , Zhaoyu Jin

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Abstract

A novel non-enzymatic glucose sensor is developed by directly growing flower-shaped NiCo₂O₄ microsphere on flexible carbon cloth (NCO/CC) through a one-step electro-deposition with subsequent mild heat treatment. Benefiting from the excellent conductivity between the three-dimensional (3D) structure of NiCo₂O₄ and CC, as well as the synergic effect between the nickel and cobalt cations, the NCO/CC can not only offer more additional active sites, but also significantly enhance its electrocatalytic performance. Under the optimized conditions, the NCO/CC electrode reveals excellent activity with a broad linear detection range from 10 to 2000 μM, a high sensitivity of 5260 μA mM⁻¹ cm⁻², and a low detection limit (LOD) of 0.2 μM, along with good repeatability and long-term stability. Furthermore, the NCO/CC was successfully utilized to detect glucose in actual beverage samples, showing competitive performance. The straightforward and practical method offers a novel approach to measuring glucose in real-world applications.

Novelty statement

3D flower-shaped NiCo₂O₄ microspheres growing on flexible carbon cloth (NCO/CC) were fabricated by a facile one-step electro-deposition with subsequent mild heat treatment.

The fabricated NCO/CC electrode exhibits a wide linear detection range, high selectivity, good reproducibility, and stability towards the detection of glucose.

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来源期刊

Microchemical Journal 化学-分析化学

CiteScore

8.70

自引率

8.30%

发文量

1131

审稿时长

1.9 months

期刊介绍： The Microchemical Journal is a peer reviewed journal devoted to all aspects and phases of analytical chemistry and chemical analysis. The Microchemical Journal publishes articles which are at the forefront of modern analytical chemistry and cover innovations in the techniques to the finest possible limits. This includes fundamental aspects, instrumentation, new developments, innovative and novel methods and applications including environmental and clinical field. Traditional classical analytical methods such as spectrophotometry and titrimetry as well as established instrumentation methods such as flame and graphite furnace atomic absorption spectrometry, gas chromatography, and modified glassy or carbon electrode electrochemical methods will be considered, provided they show significant improvements and novelty compared to the established methods.