Herein, the composite of palladium nanoparticles and graphene oxide (CPG) has been synthesized by a facile and very efficient method that provided chemical selectivity and high catalytic activity. The synthesized CPG was characterized by several techniques such as transmission and high-resolution electron microscopy (TEM and HR-TEM), X-ray diffraction (XRD) and Raman spectroscopy, and Photoelectron spectroscopy (XPS). CPG was tested for selective reduction of nitroarenes at room temperature. After the addition of CPG to the reaction media, catalytic performances were depended upon the cooperative effect of hydrogen activation with Pd nanoparticles, where the lack of electrons favors an excellent performance. Nitroarenes can be bound to the energetically preferred adsorption site for the nitro group in electrically enriched graphene oxide. In addition, the Pd nanoparticles transfer electrons to the graphene oxide which increases the functions of metal and carbon support. CPG exhibits both chemoprotective and high catalytic performance for hydrogenation of nitroarenes at room temperature. Aniline derivatives were obtained with high yields under mild conditions and a practical catalytic system was developed by the use of CPG.

本文中，已经通过提供化学选择性和高催化活性的简便且非常有效的方法合成了钯纳米颗粒和氧化石墨烯（CPG）的复合物。合成的CPG通过多种技术进行表征，例如透射和高分辨率电子显微镜（TEM和HR-TEM），X射线衍射（XRD）和拉曼光谱以及光电子光谱（XPS）。测试了CPG在室温下选择性还原硝基芳烃的能力。在将CPG添加到反应介质后，催化性能取决于氢活化与Pd纳米颗粒的协同作用，其中缺乏电子有利于优异的性能。硝基芳烃可以键合到能量富集的氧化石墨烯中在能量上优选的硝基吸附位点上。另外，Pd纳米颗粒将电子转移到氧化石墨烯上，这增加了金属和碳载体的功能。CPG在室温下对硝基芳烃的氢化具有化学保护性和高催化性能。在温和条件下以高收率获得苯胺衍生物，并通过使用CPG开发了实用的催化体系。