Laser-Induced Mesoporous Nickel Oxide as a Highly Sensitive Nonenzymatic Glucose Sensor

氧化镍 抗坏血酸 介孔材料 介电谱 安培法 循环伏安法 材料科学 无机化学 电化学气体传感器 电极 生物传感器 氧化物 电催化剂 电化学 化学工程 化学 纳米技术 催化作用 有机化学 物理化学 冶金 工程类 食品科学
作者
Sotoudeh Sedaghat,Chad R. Piepenburg,Amin Zareei,Zhimin Qi,Samuel Peana,Haiyan Wang,Rahim Rahimi
出处
期刊:ACS applied nano materials [American Chemical Society]
卷期号:3 (6): 5260-5270 被引量:61
标识
DOI:10.1021/acsanm.0c00659
摘要

In this paper, we present a novel laser-induced oxidation procedure for in situ formation of nickel oxide nanoporous structures directly onto the nickel surface as a highly sensitive nonenzymatic glucose sensor. The formation of mesoporous nickel oxide is confirmed by field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. Electrochemical properties of the pristine and laser-induced oxidized nickel (LIO-Ni) films were studied using cyclic voltammetry and electrochemical impedance spectroscopy. The unique three-dimensional mesoporous architecture of the oxide film on the LIO-Ni electrode resulted in a dramatic enhancement in electrochemical reduction/oxidation performance with a 10-fold increase in electrocatalytic activity for nonenzymatic glucose oxidation as compared to the pristine-Ni electrode. The LIO-Ni biosensor performance was successfully examined for the amperometric detection of glucose over a wide concentration range from 5 μM to 1.1 mM with a high linear sensitivity of 5222 μA mM–1 cm–2. The limit of detection was obtained as low as 3.31 μM with a signal-to-noise ratio of 3. Furthermore, the LIO-Ni electrode showed outstanding long-term stability, reproducibility, and high selectivity in the presence of various interfering agents including uric acid, l-ascorbic acid, acetaminophen, glutamic acid, and citric acid. The demonstrated laser-induced oxidation process can be potentially adapted to the scalable manufacturing of a wide range of other easy-to-use and robust metal oxide-based sensors for nonenzymatic biosensing applications.

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