Ultrasensitive binder-free glucose sensors based on the pyrolysis of in situ grown Cu MOF

Xuan Zhang, Jiangshui Luo, Pengyi Tang, Joan Ramon Morante, Jordi Arbiol, Cailing Xu, Qingfeng Li, Jan Fransaer

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Abstract

A non-enzymatic glucose sensor based on carbon/Cu composite materials was developed by the in-situ growth and subsequent pyrolysis of metal-organic frameworks (MOFs) on Cu foam. After pyrolysis, SEM, HRTEM and STEM-EELS were employed to clarify the hierarchical Cu@porous carbon electrode. It is found that the Cu nanoparticles are uniformly embedded in the carbon matrix, attached on the carbon layer closely. The electrocatalytic activity of the Cu@porous carbon matrix electrode for glucose sensing was explored by cyclic voltammetry (CV) and chronoamperometry. The resulting Cu@porous carbon matrix electrode displays ultrahigh sensitivity (10.1 mA cm−2 mM−1), low detection limit (<1 μM), short response time (less than 2 s) and good stability, indicating that the developed electrode is a promising candidate material for glucose sensors.
Original languageEnglish
JournalSensors and Actuators B: Chemical
Volume254
Pages (from-to)272-281
ISSN0925-4005
DOIs
Publication statusPublished - 2017

Keywords

  • Metal-organic frameworks
  • Electrodeposition
  • Pyrolysis
  • Carbon-metal composite materials
  • Glucose sensors
  • Ultrasensitive

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