Feng Wei, Huang Tingting, Gao Liqian, Yang Xianfeng, Deng Wenbin, Zhou Rui, Liu Hongjun
School of Pharmaceutical Science (Shenzhen), Sun Yat-sen University Guang Dong Province People's Republic of China 510006.
School of Aerospace Engineering, Xiamen University 422 Siming South Road, Siming District Xiamen Fujian Province People's Republic of China 361005
RSC Adv. 2018 Feb 7;8(12):6288-6292. doi: 10.1039/c7ra13257c. eCollection 2018 Feb 6.
A novel textile-based nanosilver catalyst was prepared with a facile synthetic method. The textile-supported nanosilver (TsNS) proved to be an excellent heterogeneous catalyst for the reduction of nitroaromatics with a broad substrate scope. It can be recycled for up to 6 times without significantly compromising its catalytic efficacy. The TsNS catalyst was developed into a column reactor, demonstrating its practical application with the advantages of low cost, ease of operation and large scale synthesis capabilities. Scanning electron microscopy (SEM) showed that there were few changes to the catalyst's surface after the reaction. Besides, inductively coupled plasma (ICP) analysis showed that few silver particles leaked, and the interactions between the nitro groups of the nitroaromatics and the nanosilver particles were characterized by X-ray photoelectron spectroscopy (XPS), which lead to the proposal of a four-step mechanism for the reduction reaction.
采用简便的合成方法制备了一种新型的基于纺织品的纳米银催化剂。经证明，纺织品负载的纳米银（TsNS）是一种优异的多相催化剂，可用于还原硝基芳烃，底物范围广泛。它可以循环使用多达6次，而不会显著降低其催化效率。TsNS催化剂被开发成柱式反应器，展示了其具有低成本、操作简便和大规模合成能力等优点的实际应用。扫描电子显微镜（SEM）显示，反应后催化剂表面几乎没有变化。此外，电感耦合等离子体（ICP）分析表明，几乎没有银颗粒泄漏，并用X射线光电子能谱（XPS）对硝基芳烃的硝基与纳米银颗粒之间的相互作用进行了表征，从而提出了还原反应的四步机理。
