Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, 1439817435, Iran.
Nanobiosensors Lab, Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, 1439817435, Iran.
Anal Chim Acta. 2023 Apr 15;1250:340981. doi: 10.1016/j.aca.2023.340981. Epub 2023 Feb 16.
Here, we report the fabrication of an enzyme-free glucose sensor benefiting from nickel-samarium nanoparticles-decorated MXene layered double hydroxide (MXene/Ni/Sm-LDH). The electrochemical response of the MXene/Ni/Sm-LDH to glucose was studied via cyclic voltammetry (CV). The fabricated electrode has high electrocatalytic activity for glucose oxidation. The voltametric response of the MXene/Ni/Sm-LDH electrode to glucose was investigated by differential pulse voltammetry (DPV) that demonstrated an extended linear range of from 0.001 to 0.1 mM and 0.25-7.5 mM with a detection limit down to 0.24 μM (S/N = 3) and a sensitivity at 1673.54 μA mM cm 1519.09 μA mM cm in concentrations of 0.01 mM and 1 mM respectively as well as good repeatability, high stability and applicability for the real sample analysis. Moreover, the as-fabricated sensor was applied to glucose detection in human sweat and showed promising results.
在这里，我们报告了一种无酶葡萄糖传感器的制造，该传感器得益于镍钐纳米粒子修饰的 MXene 层状双氢氧化物（MXene/Ni/Sm-LDH）。通过循环伏安法（CV）研究了 MXene/Ni/Sm-LDH 对葡萄糖的电化学响应。通过差分脉冲伏安法（DPV）研究了制备电极对葡萄糖的氧化的高电催化活性。MXene/Ni/Sm-LDH 电极对葡萄糖的伏安响应通过差分脉冲伏安法（DPV）进行了研究，结果表明，线性范围从 0.001 到 0.1 mM 和 0.25 到 7.5 mM，检测限低至 0.24 μM（S/N = 3），在 0.01 mM 和 1 mM 浓度下的灵敏度分别为 1673.54 μA mM cm 和 1519.09 μA mM cm，具有良好的重复性、高稳定性和对实际样品分析的适用性。此外，所制备的传感器用于检测人体汗液中的葡萄糖，结果令人满意。
