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Integrating Conductive Metal–Organic Framework with Graphene Oxide to Highly Sensitive Platform for Electrochemical Sensing
Author(s) -
Shi Xiaofei,
Xu Yulong,
Zhao Bo,
Li Pingping,
Song Min,
Jia Jingjing,
Yu Huijun,
Lu Guang
Publication year - 2021
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202100586
Subject(s) - materials science , graphene , dielectric spectroscopy , cyclic voltammetry , nanorod , x ray photoelectron spectroscopy , electrochemistry , electrode , oxide , chemical engineering , nanotechnology , chemistry , engineering , metallurgy
The rational selection and integration of materials play important roles in advancing electrochemical sensing. Herein, a highly sensitive electrochemical platform based on composites of graphene oxide (GO) and conductive YbHHTP metal–organic framework (HHTP = 2,3,6,7,10,11‐hexahydroxytriphenylene) for the detection of dopamine (DA) and uric acid (UA) is reported. The composites are prepared by the introduction of GO into the hydrothermal synthesis of YbHHTP. The morphology, structure, and property of the resultant GO/YbHHTP composites are characterized by scanning electron microscopy, transmission electron microscopy, X‐ray diffraction, ultraviolet–visible spectroscopy, X‐ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and cycle voltammetry. The results show that this in situ integration strategy facilitates the homogeneous anchoring of YbHHTP nanorods on the surface of GO sheets to achieve a considerable conductivity in the composites and fast electrochemical kinetics for probe molecules. As a result, the GO(2.0)/YbHHTP‐modified electrodes exhibit ultrahigh sensitivity in detection of DA (3.62 µA µ m −1 ) and UA (1.97 µA µ m −1 ) as well as excellent reproducibility, stability, and anti‐interfere ability.