期刊
ANALYTICA CHIMICA ACTA
卷 1107, 期 -, 页码 55-62出版社
ELSEVIER
DOI: 10.1016/j.aca.2020.02.014
关键词
Chemical etching; Core-shell MOFs; Surface functionalization; Graphene; Electrochemical catalysis and sensing
资金
- National Natural Science Foundation of China [21804031, 81672919, 81771718]
Recently, metal-organic frameworks (MOFs) display great application potential in the field of electrochemical catalysis and sensing due to its extraordinary properties. Herein, Co-based MOFs (ZIF-67) decorated graphene nanosheets (GS) heterogeneous hybrids (ZIF-67@GS) with sandwich-like morphology is first prepared by a facile in situ synthesis method. The electrochemical activity of ZIF-67 polyhedrons is effectively enhanced for the introduction of the high conductivity of graphene nanosheets. Subsequently, phytic acid functionalized ZIF-67 with unique core-shell structure decorated GS (PA-ZIF-67@GS) is prepared through the chemical etching effect of phytic acid. Surprisingly, the exposure level of metal active sites, electrochemical active surface area, electron transfer kinetic of the chemically etched ZIF-67@GS are further significantly boosted. Benefiting from the greatly modified interface property, the as-obtained PA-ZIF-67@GS hybrids exhibit excellent electrocatalytic activity toward the oxidation of glucose, and an ultrasensitive nonenzymatic electrochemical sensing platform is then developed. It is believed that this work may provide effective guidance for optimizing the electrochemical catalytic and sensing performance of other series of MOFs. (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据