Conductive Metal‐Organic Framework Grown on the Nickel‐Based Hydroxide to Realize High‐Performance Electrochemical Glucose Sensing

Abstract Glucose holds significant importance in disease diagnosis as well as beverage quality monitoring. The high‐efficiency electrochemical sensor plays a crucial role in the electrochemical conversion technology. Ni(OH) 2 nanosheets are provided with high specific surface area and redox activity that are widely used in electrochemistry. Conductive metal‐organic frameworks (cMOFs) perfectly combine the structural controllability of organic materials with the long‐range ordering of inorganic materials that possess the characteristic of high electron mobility. Based on the above considerations, the combination of Ni(OH) 2 and Ni‐HHTP (HHTP=2,3,6,7,10,11‐hexahydroxytriphenylene) as an electrode modification material is designed to enhance electrochemical performance. In this work, to improve glucose detection, a sequence of Ni(OH) 2 @NiCo‐HHTP and NiM‐LDH@Ni‐HHTP (M=Co 2+ , Mn 2+ , Cu 2+ , LDH=layered double hydroxide) are successfully synthesised by doping metals into Ni‐HHTP and Ni(OH) 2 , respectively. As a result, NiCu‐LDH@Ni‐HHTP showed the best excellent glucose detection sensitivity.