Morphology Control Strategy of Bimetallic MOF Nanosheets for Upgrading the Sensitivity of Noninvasive Glucose Detection

材料科学 双金属片 电极 纳米技术 灵敏度(控制系统) 检出限 选择性 线性范围 生物传感器 化学工程 催化作用 金属 色谱法 电子工程 化学 有机化学 物理化学 冶金 工程类
作者
Yajie Yang,Wenyao Yang,Liuwei Shi,Yi Li,Qi Zeng,Jianhua Xu,Yajie Yang
出处
期刊:ACS Applied Materials & Interfaces [American Chemical Society]
卷期号:14 (33): 37843-37852 被引量:29
标识
DOI:10.1021/acsami.2c10760
摘要

The precise measurement of glucose level is significant for the health management of the human body. However, the existing sensitive materials and detection methods for glucose are less satisfying for practical applications. Herein, an ultrathin reticular two-dimensional nanosheets array composed of trimesic acid (H3BTC)-based bimetal metal-organic frameworks (MOFs) and carbon cloth (CC), which is constructed through a morphology control strategy, is reported for glucose sensing. Meanwhile, this nonmoving sweat glucose sensor based on a NiCo-BTC/CC electrode has been successfully prepared by a screen printing method. Benefiting from the regular and ultrathin nanosheets array, the NiCo-BTC/CC electrode has an excellent sensitivity of 2701.29 μA mM-1 cm-2, which is about 2.4 times that of its unregulated counterpart (1127.85 μA mM-1 cm-2) in the linear range 5-205 μM. In addition, an ultralow detection limit (0.09 μM, S/N = 3) and good selectivity of NiCo-BTC/CC were also obtained. The high sensitivity of the glucose sensor based on NiCo-BTC/CC electrode is 0.174 μA μM-1 (50-1000 μM). Remarkably, the preciously designed sensor is used to detect glucose concentration in sweat with a noninvasive mode, and the results are basically consistent with those of a commercial glucose device with an invasive mode. This research exhibits potential methodology for the morphology design of bimetallic MOFs nanosheets to achieve a high accuracy rate and noninvasive and timeless measurement of a glucose sensor.
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