NiCo layered double hydroxide (NiCo-LDH) was explored as electrocatalyst for nonenzymatic detection of H 2 O 2 , in which NiCo-LDH with different morphologies were synthesized through a hydrothermal method, and then acid-etched NiCo-LDH (E-NiCo-LDH) was obtained via an acid-base reaction. The morphology, composition and structure were characterized by transmission electron microscopy and X-ray diffraction. Electrochemical measurements reveal that E-NiCo-LDH exhibits an excellent electrocatalytic activity toward H 2 O 2 oxidation and the sensor based on E-NiCo-LDH is able to detect H 2 O 2 in a linear range of 2.0 μ M to 1.1 mM with a high sensitivity of 728.6 μ A mM −1 cm −2 and a low detection limit of 0.2 μ M (S/N = 3). This indicated that E-NiCo-LDH is a promising material for electrochemical sensing of H 2 O 2 .

中文翻译：

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增强非酶法检测过氧化氢的E-NiCo-LDH的合成

探索了NiCo层状双氢氧化物（NiCo-LDH）作为非酶法检测H 2 O 2的电催化剂，其中通过水热法合成了不同形态的NiCo-LDH，然后酸蚀NiCo-LDH（E-NiCo- LDH）是通过酸碱反应获得的。通过透射电子显微镜和X射线衍射表征其形态，组成和结构。电化学测量表明，E-NiCo-LDH对H 2 O 2的氧化表现出优异的电催化活性，基于E-NiCo-LDH的传感器能​​够在2.0μM至1.1 mM的线性范围内检测H 2 O 2灵敏度高，为728.6μA mM -1 cm -2，检测极限低至0.2μM（S / N = 3）。这表明E-NiCo-LDH是用于H 2 O 2电化学传感的有前途的材料。