Abstract：
It is necessary to efficient detection hydrazine in food. Exploring highly sensitive, low-cost and fast response electrochemical hydrazine sensing methods has been a challenge in this field. In this paper, a conformal transformation method is used to prepare rose flower-like NiCo-LDH derivating from the bimetallic NiCo-MOFs, and the N2H4 sensing platform with a large electrocatalytic area, high conductivity and good stability was constructed. Based on the synergy between Ni and Co and the remarkable catalytic activity of the rough 3D flower-like structure, the N2H4 sensor has a linear response in the concentration range of 0.001-1 mmol/L and 1-7 mmol/L, with a sensitivity of 5342 μA L mmol-1 cm-2 and 2965 μA L mmol-1 cm-2 (S/N = 3), respectively, and low limit of detection of 0.043 μmol/L. This study opens a new door for the successful application of electrochemical sensors to detect N2H4 in real food samples.
摘要：
高效检测食品中的肼是必要的。探索高度敏感，低成本和快速响应的电化学肼传感方法一直是该领域的挑战。在本文中,使用共形转换方法从双金属NiCo-MOFs中制备玫瑰花状NiCo-LDH，和具有大电催化面积的N2H4传感平台，高导电性和良好的稳定性。基于Ni和Co之间的协同作用以及粗糙3D花状结构的显着催化活性，N2H4传感器在0.001-1mmol/L和1-7mmol/L的浓度范围内具有线性响应，灵敏度为5342μALmmol-1cm-2和2965μALmmol-1cm-2（S/N=3），分别,检测下限为0.043μmol/L。这项研究为成功应用电化学传感器检测实际食品样品中的N2H4开辟了新的大门。
