The sonochemical methods have been used as a straight forward method for the synthesis of various composite materials, including the transition metal dichalcogenide composites. In the present work, we report a simple sonochemical synthesis of CuS nanoplates decorated partially reduced graphene oxide (PrGO) nanocomposite for the first time. The PrGO-CuS nanocomposite was synthesized using bath-sonication (frequency: 37 kHz; power: 150 W) of graphene oxide (GO), and CuS precursors at 80 °C for 60 min. The physicochemical characterization (FESEM, XRD, FTIR, and Raman spectroscopy) results confirmed the successful formation of CuS nanoplates on PrGO nanosheets. The as-synthesized PrGO-CuS nanocomposite was further utilized for electroanalysis of dopamine neurotransmitter. The obtained electroanalytical results revealed that PrGO-CuS nanocomposite has superior electrochemical activity towards dopamine than those obtained for GO, CuS, and GO-CuS composite. The fabricated biosensor shows a lower limit of detection (0.022 µM) with a more comprehensive linear response range (0.1-155.1 µM) for the detection of dopamine. Moreover, the PrGO-CuS nanocomposite electrode was successfully used for the detection of dopamine in bovine serum albumin.

中文翻译：

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一锅超声化学合成CuS纳米板装饰了部分还原的氧化石墨烯，用于多巴胺神经递质的生物传感。

声化学方法已被用作合成各种复合材料的直接方法，包括过渡金属二卤化物复合物。在目前的工作中，我们首次报道了装饰有部分还原的氧化石墨烯（PrGO）纳米复合材料的CuS纳米板的简单声化学合成。PrGO-CuS纳米复合材料是使用氧化石墨烯（GO）和CuS前驱体在80°C下浴浴超声处理（频率：37 kHz；功率：150 W）合成的，时间为60分钟。物理化学表征（FESEM，XRD，FTIR和拉曼光谱）结果证实了在PrGO纳米片上成功形成CuS纳米片。合成后的PrGO-CuS纳米复合材料进一步用于多巴胺神经递质的电分析。所获得的电分析结果表明，PrGO-CuS纳米复合材料对多巴胺的电化学活性优于GO，CuS和GO-CuS复合材料。制成的生物传感器显示出较低的检测限（0.022 µM），并且具有更全面的线性响应范围（0.1-155.1 µM）用于检测多巴胺。此外，PrGO-CuS纳米复合电极已成功用于牛血清白蛋白中多巴胺的检测。