Preparation of Ni-Zn-doped porous carbon materials (Ni@C) as electrochemical sensor for hydroquinone detection

In this work, Ni-Zn-doped porous carbon materials (Ni@C) with regular dodecahedral morphologies were synthesized by calcination of Ni-doped ZIF-8 as a template, and applied in electrochemical sensing and quantitative electrochemical sensors to detect Hydroquinone (HQ), The uniformly dispersed Ni in Ni@C serves as the catalytically active material, and the synergistic effect of elemental Zn and porous carbon improves the electron transport efficiency of the material. The developed Ni@C electrochemical sensor detected HQ alone with a sensitivity of 180 μA μM -1 cm -2 and a linear range of 9.1 nM-80 μM. The results demonstrate that the enzyme-free electrochemical sensor based on Ni@C/GCE exhibits good sensitivity, a wide linear range and excellent selectivity. At the same time, the problem of the general conductivity of metal-organic framework (MOF) materials is solved, which provides a new idea for the application of such new materials in the direction of electrochemistry.