High-performance electrocatalysts based core-shell SWCNHs@ZIF-67 heterostructure for ultrasensitive H2O2 sensing

IF 1.3 4区 化学 Q4 ELECTROCHEMISTRY
Yile Hu, Jingge Shi, Zifan Wang, Xiaopeng Wang, Yujia Lai, Yanke Chen, Zhiqiang Wei, Hui Yang
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引用次数: 0

Abstract

ZIF-67 is a Co-based zeolitic imidazolate framework material with both redox metal active sites and organic functional groups. Single walled carbon nanohorns (SWCNHs) is a novel horn-shaped carbon nanomaterial with abundant carbon active sites and high conductivity. SWCNHs@ZIF-67 heterostructure composites were prepared by environmental-friendly method with ZIF-67 as core and SWCNHs as shell, then were fixed on the surface of glassy carbon electrode (GCE) to obtain the electrochemical sensing platform for detecting H2O2. The as-proposed sensor (SWCNHs@ZIF-67/GCE) demonstrates excellent electrocatalytic performance for the reduction of H2O2 with two linearity scopes (0.50–150 µM, 150–400 µM) and a low detection limit of 0.15 μM, which is attributed to the synergistic electrocatalytic effect between ZIF-67 and SWCNHs. The as-fabricated sensor was satisfactorily used for H2O2 analysis in plasma samples, revealing an immense potential application in vitro assay of H2O2.

基于核壳 SWCNHs@ZIF-67 异质结构的高性能电催化剂用于超灵敏 H2O2 传感
ZIF-67 是一种具有氧化还原金属活性位点和有机功能基团的钴基沸石咪唑酸盐框架材料。单壁纳米碳角(SWCNHs)是一种新型角状碳纳米材料,具有丰富的碳活性位点和高导电性。采用环保方法制备了以 ZIF-67 为核,SWCNHs 为壳的 SWCNHs@ZIF-67 异质结构复合材料,并将其固定在玻璃碳电极(GCE)表面,从而获得了检测 H2O2 的电化学传感平台。拟制的传感器(SWCNHs@ZIF-67/GCE)在还原 H2O2 方面表现出优异的电催化性能,具有两种线性范围(0.50-150 µM、150-400 µM)和 0.15 μM 的低检测限,这归功于 ZIF-67 和 SWCNHs 之间的协同电催化作用。制备的传感器被成功用于血浆样品中的 H2O2 分析,揭示了 H2O2 体外检测的巨大应用潜力。
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来源期刊
CiteScore
3.00
自引率
20.00%
发文量
714
审稿时长
2.6 months
期刊介绍: International Journal of Electrochemical Science is a peer-reviewed, open access journal that publishes original research articles, short communications as well as review articles in all areas of electrochemistry: Scope - Theoretical and Computational Electrochemistry - Processes on Electrodes - Electroanalytical Chemistry and Sensor Science - Corrosion - Electrochemical Energy Conversion and Storage - Electrochemical Engineering - Coatings - Electrochemical Synthesis - Bioelectrochemistry - Molecular Electrochemistry
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