Zhang Zhi-Xia, Wang Shuo, Li Shi-Ming, Shan Si-Li, Wang Huan, Lu Jia-Xing
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 P. R. China
RSC Adv. 2020 Jan 3;10(2):756-762. doi: 10.1039/c9ra08930f. eCollection 2020 Jan 2.
To develop efficient catalysts for the electroreduction of organic halides, a facile one-pot synthesis of Ag nanoparticles/ordered mesoporous carbon electrode materials the self-assembly of CHCOOAg and resol in the presence of triblock copolymer is proposed. The resultant electrode materials possess uniform mesopore sizes (3.3 nm) and pore volumes (∼0.28 cm g), high specific surface areas (∼500 m g), and uniformly dispersed Ag nanoparticles (12-36 nm) loaded within the carbon matrix. Cyclic voltammetry, measurements of electrochemically active surface area, and electrolysis experiments were conducted to understand the correlations between the catalytic ability and the structural and textural features of the catalysts. Excellent bibenzyl yield (98%) and remarkable reusability were obtained under mild conditions. The results confirm that the prepared nanocomposites show outstanding performance in the electroreduction degradation of PhCHBr to bibenzyl.
为开发用于有机卤化物电还原的高效催化剂，提出了一种简便的一锅法合成Ag纳米颗粒/有序介孔碳电极材料的方法，即在三嵌段共聚物存在下，使CHCOOAg和间苯二酚进行自组装。所得电极材料具有均匀的中孔尺寸（3.3纳米）和孔体积（约0.28立方厘米/克）、高比表面积（约500平方米/克），以及均匀分散在碳基质中的Ag纳米颗粒（12 - 36纳米）。进行了循环伏安法、电化学活性表面积测量和电解实验，以了解催化能力与催化剂结构和织构特征之间的相关性。在温和条件下获得了优异的联苄产率（98%）和显著的可重复使用性。结果证实，所制备的纳米复合材料在将PhCHBr电还原降解为联苄方面表现出优异的性能。
