Abstract Layered molybdenum disulfide/reduced graphene oxide (MoS2/RGO) nanocomposites were synthesized by solvothermal method, and were characterized by high-resolution transmission electron microscopy (HRTEM), field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-rayphotoelectron spectroscopy (XPS), and Raman spectroscopy. The electrochemical properties of the nanocomposites were studied by cyclic voltammetry and electrochemical impedance spectroscopy. Hydroquinone was selected as model molecular to investigate the electrochemical responses of the modified electrode. The results found that the synergetic effect of nanomaterials endowed the nanocomposite excellent electrocatalytic behavior towards the electrochemical reaction of hydroquinone. Under the optimal condition, hydroquinone can be sensitively detected in the range of 1–9 nM with the detection limit of 0.3 nM (S/N = 3). The obtained results revealed MoS2/GRO composites exhibited superior electrochemical performance in the detection of hydroquinone, and it may have promising potential for electrochemical sensors.

中文翻译：

---

基于MoS 2 /还原氧化石墨烯纳米复合材料的氢醌电化学检测

摘要 采用溶剂热法合成了层状二硫化钼/还原氧化石墨烯 (MoS2/RGO) 纳米复合材料，并通过高分辨透射电子显微镜 (HRTEM)、场发射扫描电子显微镜 (FE-SEM)、X 射线衍射进行了表征。 (XRD)、X 射线光电子能谱 (XPS) 和拉曼光谱。通过循环伏安法和电化学阻抗谱研究了纳米复合材料的电化学性能。选择对苯二酚作为模型分子来研究修饰电极的电化学响应。结果发现，纳米材料的协同效应赋予了纳米复合材料对氢醌电化学反应的优异电催化性能。在最优条件下，氢醌可在 1–9 nM 范围内灵敏检测，检测限为 0.3 nM (S/N = 3)。获得的结果表明，MoS2/GRO 复合材料在对苯二酚的检测中表现出优异的电化学性能，并且它可能具有用于电化学传感器的潜力。