Bi₂S₃ nanorods anchored over reduced graphene oxide (rGO/Bi₂S₃) were successfully synthesized via a one-pot hydrothermal process, where in-situ generation of Bi₂S₃ nanorods and reduction of GO occurred simultaneously. Moreover, the controlled synthesis of rGO/Bi₂S₃ nanocomposite with tunable size was achieved by adjusting the dosage of GO. The nanocomposites were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDX), X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy, respectively. Because of the particular construction of as-prepared nanocomposite and the synergistic effect between rGO sheets and Bi₂S₃ nanorods, the rGO/Bi₂S₃ film can effectively accelerate electron transport and extend catalytic active sites, leading to the remarkable electrochemical performance for dopamine sensing. The rGO/Bi₂S₃-1/GCE sensor exhibited excellent electrocatalytic activity toward the dopamine oxidation with a wide linear range of 0.01–40 μM and a low detection limit of 12.3 nM. Furthermore, the as-prepared sensor could be feasibly applied to detect dopamine in urine samples. Hence, the prepared rGO/Bi₂S₃ composite is one of the low cost, extremely promising and nontoxicity materials for electrocatalysis and relevant fields.

的Bi ₂小号₃纳米棒挂靠在还原的石墨烯氧化物（RGO /铋₂小号₃）通过一釜的水热过程，其中原位生成的Bi成功地合成₂小号₃纳米棒和还原GO的同时发生。此外，rGO / Bi ₂ S ₃的受控合成通过调节GO的剂量可以得到尺寸可调的纳米复合材料。分别通过透射电子显微镜（TEM），扫描电子显微镜（SEM），能量色散X射线光谱（EDX），X射线衍射（XRD），拉曼光谱和傅里叶变换红外（FTIR）光谱对纳米复合材料进行表征。 。由于制备的纳米复合材料的特殊结构以及rGO片与Bi ₂ S ₃纳米棒之间的协同作用，rGO / Bi ₂ S ₃膜可以有效地加速电子传输并扩展催化活性位，从而导致出色的电化学性能。多巴胺感测。rGO / Bi ₂ S ₃-1 / GCE传感器对多巴胺的氧化表现出出色的电催化活性，线性范围为0.01–40μM，检测极限为12.3 nM。此外，所制备的传感器可以可行地用于检测尿液样本中的多巴胺。因此，制备的rGO / Bi ₂ S ₃复合材料是用于电催化和相关领域的低成本，极有希望且无毒的材料之一。