A facile hydrothermal reduction synthesis of multilayer flake Ag/Ni(OH)₂ nanostructures and their electrocatalytic activity toward the oxidation of glucose

Abstract

Multilayer flake Ag/Ni(OH)₂ nanostructures are synthesized with a facile hydrothermal reduction method. In the preparation process, N, N-dimethylformamide (DMF) is used as a reducing agent, and polyvinylpyrrolidone (PVP) is used as a surfactant. The effects of several influencing factors such as the concentration of silver nitrate, reaction temperature and reaction time on the crystal phase of the products are characterized by X-ray diffraction (XRD) analysis. The morphology and chemical composition are characterized by Scanning electron microscopy (SEM), Fourier infrared spectroscopy (FTIR), Energy dispersive spectrometer (EDS), and X-ray photoelectron spectroscopy (XPS). In a three-electrode system, the electrocatalytic oxidation activity of Ag/Ni(OH)₂ nanostructures for glucose was tested by cyclic voltammetry (CV) curve, current-time (i-t) responses and electrochemical impedance spectroscopy (EIS). The results show that Ag/Ni(OH)₂ modified glassy carbon electrode (GCE) has better catalytic activity for glucose than the Ni(OH)₂ modified electrode.

Keywords:

• Ag/Ni(OH)₂
• multi-layer flake nanostructure
• electrocatalytic oxidation activity

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This research was supported by the Opening Project of Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, the sponsorship of Nanjing Key Laboratory of Optometric Materials and Technology, and the Doctor Initial Foundation of Jinling Institute of Technology Fund.