纳米片
化学
电化学
过氧化氢
金属有机骨架
检出限
选择性
纳米技术
水溶液中的金属离子
金属
化学工程
纳米颗粒
电极
催化作用
材料科学
有机化学
色谱法
吸附
物理化学
工程类
作者
Ying Ma,Ping Wei,Mengjie Chen,Xianhua Shi,Xiange Lu,Xuanxuan Zhang,Duanping Sun
标识
DOI:10.1016/j.jelechem.2023.117490
摘要
A variety of two-dimensional (2D) metal–organic framework (MOF) nanosheets have been discovered with excellent peroxidase-like activity due to their merits of accessible active sites and large surface area. However, few methods can be used for the large-amount production of 2D MOF nanosheets. Herein, we report a simple room temperature solution phase method for the high-yield synthesis of 2D trimetallic MOF nanosheets with three kinds of metal ions as ligands. The as-synthesized NiCoM (M = Cu, Fe, and Zn) nanosheets showed markedly enhanced electrochemical activity due to the synergistic effect. Among these obtained nanosheets, NiCoFe showed the highest electrocatalytic activity, demonstrating that Fe played a dominant role in determining the activities of nanozymes. As a proof-of-concept application, 2D NiCoFe nanosheets are used as modified materials for the electrochemical detection of H2O2. The results showed that the fabricated sensor can detect hydrogen peroxide (H2O2 ) with a detection range of 5.0 μM − 15 mM, a detection limit of 2.1 μM, excellent selectivity and stability. Moreover, the fabricated NiCoFe nanosheet-based electrochemical sensor can be used for the detection of H2O2 in serum samples. Our work provides a scalable method for the large-scale synthesis of 2D trimetallic MOF nanosheets as enhanced nanozymes for various applications.
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