A sensitive acetaminophen sensor based on Co metal-organic framework (ZIF-67) and macroporous carbon composite

• 作者: Jing Tang Zhen-Zhen Hui Tao Hu Xin Cheng Jia-Hao Guo Zi-Rong Li Hao Yu
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: RARE METALS(Monthly)
• 页码范围: 189-198
• 页数: 10页
• 语种: 英文

摘要

The composite of zeolitic imidazolate frame-works (ZIF-67) and ordered macroporous carbon (OMC)was successfully synthesized via in situ growth from the OMC matrix.The ZIF67-OMC composite was verified by scanning electron microscopy (SEM) and transmission electron microscopy (TEM),powder X-ray diffraction(XRD) and electrochemical impedance spectroscopy (EIS)and then evaluated as a modified material for electro-chemical sensor.Benefitting from the large surface area and enhanced conductivity of the ZIF67-OMC composite,ZIF67-OMC nanocomposite showed superior electrocat-alytic performance toward acetaminophen (AP) oxidation.The redox reaction of AP underwent a quasi-reversible redox reaction with higher anodic current at ZIF67-OMC modified electrode compared with the bare glassy carbon electrode (GCE).In optimal condition,the ZIF67-OMC/GCE was stable,reproducible and had a linear range of 0.05-100 μmol·L-1 AP concentration,with the detection limit of 20 nmol·L-1 (signal-to-noise of S/N =3).In addition,the prepared sensing platform for the detection of AP was evaluated for the compound paracetamol tablets and urine samples.