MoS₂ nanoflakes were prepared by exfoliating commercial MoS₂ powders with the assistance of ultrasound and graphene foam was synthesized by chemical vapor deposition using nickel foam as the template. MoS₂‐graphene hybrid nanosheets were developed through the combination of MoS₂ nanoflakes and graphene nanosheets by ultrasonic dispersion. The hybrid nanosheets were sprayed onto the ITO coated glass, which acts as an electrode for the simultaneously electrochemical determination of levodopa and uric acid. The MoS₂‐graphene hybrid nanosheets were characterized by scanning electron microscopy, X‐ray diffraction and Raman spectroscopy. The results show that the hybrid nanosheets are composed of MoS₂ and graphene with a sheet‐like morphology. The sensitivity of the electrode for levodopa and uric acid is 0.36 μA μM⁻¹ and 0.39 μA μM⁻¹, respectively. The electrode also shows low limit of detection, good selectivity, reproducibility and stability. And it is potential for use in clinical research.

中文翻译：

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MoS2-石墨烯杂化纳米片的制备及左旋多巴和尿酸的同时电化学测定

MoS ₂纳米片是通过在超声的作用下剥离市售MoS ₂粉末而制得的，并以镍泡沫为模板通过化学气相沉积法合成了石墨烯泡沫。MoS _2-石墨烯杂化纳米片是通过将MoS ₂纳米片和石墨烯纳米片通过超声分散相结合而开发的。将杂化纳米片喷涂到ITO涂层玻璃上，该玻璃用作同时电化学测定左旋多巴和尿酸的电极。MoS _2-石墨烯杂化纳米片的特征在于扫描电子显微镜，X射线衍射和拉曼光谱。结果表明，杂化纳米片由MoS ₂组成和具有片状形态的石墨烯。电极对左旋多巴和尿酸的灵敏度分别为0.36μAμM ^-1和0.39μAμM ^-1。该电极还显示出低检测限，良好的选择性，可重复性和稳定性。它具有用于临床研究的潜力。