The n%Mn-MoS2/rGO (labeled as n%MMS/rGO, where n% = Mn/(Mn + Mo) in mol) composites were successfully prepared by a facile hydrothermal method from the Mn-MoS2 (MMS) and rGO precursors, in which the MMS was obtained by a facile one-step calcination of (NH4)6Mo7O24·4H2O, (NH2)2CS, and Mn(CH3COO)2·4H2O as precursors in N2 gas at 650°C. The samples were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron paramagnetic resonance spectroscopy (EPR), UV-visible diffuse reflectance spectroscopy (UV-Vis DRS), and X-ray photoelectron spectroscopy (XPS), which indicates the composites containing nanosheets of Mn-MoS2 and rGO components. The photocatalytic activities of the n%MMS/rGO composite photocatalysts were evaluated through the photodegradation of rhodamine B (RhB) under the visible light irradiation. The enhancement in the photocatalytic performance of the achieved composites was attributed to the synergic effect of Mn doping and rGO matrix. The investigation of photocatalytic mechanism was also conducted.

中文翻译：

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用于光催化降解罗丹明 B 的可见光驱动 Mn-MoS2/rGO 复合光催化剂

n%Mn-MoS2/rGO（标记为 n%MMS/rGO，其中 n% = Mn/(Mn + Mo) in mol）复合材料由 Mn-MoS2 (MMS) 和 rGO 通过简便的水热法成功制备前驱体，其中 MMS 是通过 (NH4)6Mo7O24·4H2O、(NH2)2CS 和 Mn(CH3COO)2·4H2O 作为前驱体在 650°C 下在 N2 气体中轻松一步煅烧获得的。使用 X 射线衍射 (XRD)、傅里叶变换红外光谱 (FTIR)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、电子顺磁共振光谱 (EPR)、紫外可见漫反射光谱对样品进行表征(UV-Vis DRS) 和 X 射线光电子能谱 (XPS)，表明复合材料含有 Mn-MoS2 和 rGO 组分的纳米片。通过在可见光照射下对罗丹明 B (RhB) 的光降解来评估 n%MMS/rGO 复合光催化剂的光催化活性。所得复合材料光催化性能的增强归因于 Mn 掺杂和 rGO 基质的协同作用。还进行了光催化机理的研究。