4.7 Article

Hierarchically Au-functionalized derived ultrathin NiO nanosheets for highly sensitive electrochemical hydrazine detection

期刊

APPLIED SURFACE SCIENCE
卷 542, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.apsusc.2020.148539

关键词

Metal-organic frameworks; NiO nanosheets; Au nanoparticles; Hydrothermal; Hydrazine sensor

资金

  1. National Natural Science Foundation of China [62071432, 51205274, 61901186]
  2. Natural Science of Shanxi Province [201901D111090]
  3. Open Project Program of Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University [EFMD2020002Z]

向作者/读者索取更多资源

A highly sensitive hierarchical electrochemical sensing nanostructure was successfully synthesized by enhancing material structure and catalytic effect, showing excellent electrochemical performance and great potential for applications.
A highly sensitive hierarchical electrochemical sensing nanostructures have been successfully synthesized by hydrothermal and chemical deposition methods using Au nanoparticles (AuNPs)-functionalized Metal-organic frameworks (MOF) derived oxide nickel nanosheets (NiO NSs) on nickel foam (AuNPs@NiO NSs/NF). The morphological characterization of AuNPs@NiO NSs/NF nanomaterials was investigated by scanning electron microscope (SEM), energy dispersive X-ray spectrometry (EDS) and X-ray diffraction (XRD) techniques. The electrochemical behaviors of AuNPs@NiO NSs/NF sensors were evaluated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and amperometric response (i-t). The measured results of AuNPs@NiO NSs/NF sensor shows good electrochemical properties, including high sensitivity of 17.80 mu A.mu M-1.cm(-2), wide linear range from 0.2 to 300 mu M, a low detection limit (LOD) (S/N = 3) of 0.04 mu M, limit of quantification (LOQ) of 0.13 mu M and as well as great selectivity and long-time stability. Moreover, the electrochemical sensor has also been demonstrated excellent hydrazine properties in the real environmental samples. The excellent electrochemical performance of AuNPs@NiO NSs/NF sensor can be attributed to the hierarchical nanostructure of nickel-metal frameworks and synergistic catalysis effect of Au nanoparticles, which is promising as highly sensitive material for electrochemical sensor applications.

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