Robust ultrafine ruthenium nanoparticles enabled by covalent organic gel precursor for selective reduction of nitrobenzene in water. Issue 7 (18th January 2019)

• Record Type: Journal Article
• Authors: Zhong, Hong; Gong, Yaqiong; Liu, Wenhui; Zhang, Bingbing; Hu, Shuangqi; Wang, Ruihu
• Is Part Of: Dalton transactions. Volume 48:Issue 7(2019)
• Page Start: 2345
• Page End: 2351
• Publication Date: 2019-01-18
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt04717k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Ultrafine metal nanoparticles were acquired through solid-state pyrolysis of a covalent organic gel containing metal ions. The unprecedented catalytic performance in terms of stability and reusability was displayed in the selective reduction of nitroarenes. Abstract : Metal nanoparticles (NPs) supported on nitrogen-doped porous carbon (NPC) are one type of promising heterogeneous catalysts. The tuning and understanding of metal–support interactions are crucial for the design and synthesis of highly durable and efficient heterogeneous catalytic systems. Here, we present an effective strategy to integrate ultrafine metal NPs into NPC via utilizing a covalent organic gel (COG) as the precursor for the first time. The ruthenium (Ru) NPs were uniformly dispersed in NPCs with the average size as low as 1.90 ± 0.4 nm. Irrespective of their ultrafine size, Ru NPs showed unprecedented stability and recyclability in Ru-catalyzed reduction of nitrobenzene and were greatly superior to commercial Ru/C and NPC-supported Ru NPs synthesized by the traditional post-loading method. This synthetic strategy can be extended to the synthesis of other metal or alloy NPs for a variety of advanced applications.