Cu-Based Conductive MOF Grown in situ on Cu Foam as a Highly Selective and Stable Non-Enzymatic Glucose Sensor

A non-enzymatic electrochemical sensor for glucose detection is executed by using a conductive metal-organic framework (MOF) Cu-MOF, which is built from the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand and copper acetate by hydrothermal reaction. The Cu-MOF demonstrates superior electrocataly...

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Published inFrontiers in chemistry Vol. 9; p. 786970
Main Authors Hu, Qin, Qin, Jie, Wang, Xiao-Feng, Ran, Guang-Ying, Wang, Qiang, Liu, Guang-Xiang, Ma, Jian-Ping, Ge, Jing-Yuan, Wang, Hai-Ying
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 29.11.2021
Subjects
Chemistry
electrochemical sensor
glucose
MOF
non-enzymatic
redox activity
non-enzymatic
glucose
electrochemical sensor
MOF
redox activity
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Summary:A non-enzymatic electrochemical sensor for glucose detection is executed by using a conductive metal-organic framework (MOF) Cu-MOF, which is built from the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand and copper acetate by hydrothermal reaction. The Cu-MOF demonstrates superior electrocatalytic activity for glucose oxidation under alkaline pH conditions. As an excellent non-enzymatic sensor, the Cu-MOF grown on Cu foam (Cu-MOF/CF) displays an ultra-low detection limit of 0.076 μM through a wide concentration range (0.001-0.95 mM) and a strong sensitivity of 30,030 mA μM  cm . Overall, the Cu-MOF/CF exhibits a low detection limit, high selectivity, excellent stability, fast response time, and good practical application feasibility for glucose detection and can promote the development of MOF materials in the field of electrochemical sensors.
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Mani Govindasamy, National Taipei University of Technology, Taiwan
Fangna Dai, China University of Petroleum, China
These authors have contributed equally to this work
Edited by: Jian Su, Nanjing University of Science and Technology, China
This article was submitted to Inorganic Chemistry, a section of the journal Frontiers in Chemistry
Reviewed by: Biing-Chiau Tzeng, National Chung Cheng University, Taiwan
ISSN:2296-2646
2296-2646
DOI:10.3389/fchem.2021.786970