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

SENSORS AND ACTUATORS B-CHEMICAL

卷:254

Article

Zhang, Xuan¹  Luo, Jiangshui¹  Tang, Pengyi^2,3,4  Ramon Morante, Joan⁴  Arbiol, Jordi^2,3,5  Xu, Cailing⁶  Li, Qingfeng⁷  Fransaer, Jan¹ 

[1] Katholieke Univ Leuven, Dept Mat Engn, B-3001 Leuven, Belgium

[2] CSIC, Catalan Inst Nanosci & Nanotechnol ICN2, Campus UAB, Barcelona 08193, Catalonia, Spain

[3] BIST, Campus UAB, Barcelona 08193, Catalonia, Spain

[4] Catalonia Inst Energy Res IREC, Jardins Dones Negre 1, Barcelona 08930, Catalonia, Spain

[5] ICREA, Pg Lluis Co 23, Barcelona 08010, Catalonia, Spain

[6] Lanzhou Univ, Coll Chem & Chem Engn, Lab Nonferrous Met Chem & Resources Utilizat Gans, Lanzhou 730000, Gansu, Peoples R China

[7] Tech Univ Denmark, Dept Energy Convers & Storage, DK-2800 Lyngby, Denmark

关键词: Metal organic frameworks;    Electrodeposition;    Pyrolysis;    Carbon metal composite materials;    Glucose sensors;    Ultrasensitive;   

DOI  :  10.1016/j.snb.2017.07.024

来源: Elsevier

【 摘 要 】

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 (M0F5) 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, carbon matrix in close contact with the pyrolized carbon sheets. 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 (0.6 mu A), short response time (less than 2 s) and good stability, indicating that the developed electrode is a promising glucose sensor. (C) 2017 Elsevier B.V. All rights reserved.

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