Fabrication of Nitrogen-Enriched Graphene Oxide on the DFNS/Metal NPs as a Nanocatalysts for the Reduction of 4-Nitrophenol and 2-Nitroaniline

Abstract

DFNS is functionalized by using graphene oxide (GO) (N-enriched GO) as a robust anchor. Hence, the metal nanoparticles (NPs) are well-dispersed without aggregation over the DFNS/GO (DFNS/GO/X, X = Pd, Au, Cu). For preventing the restacking of graphene sheets, the supramolecular polymerized GO behaves not only as a spacer but also as a nitrogen source for producing active centers in the case of metal NP attachments. In this way, the nitrogen over the level of the GO sheets adjusts with copper ions in order to synthesis palladium nanoparticles. Water pollution is known as a significant global concern that can threat the entire biosphere and can influence the lives of many millions of people in the world. Water pollution can make many diseases and millions of people die annually due to illness caused by the dirty water. 4-nitrophenol and also 2-nitroaniline, which have been specified as hazardous toxic. In addition, wastes contaminants are in USEPA’s list. Therefore, developing novel approaches are essential in order to eliminate these waste contaminants. In the case of the synthesize of colors and drugs, powerful performers o-phenylenediamine (o-PDA) and powerful performers were intended as considerable intermediate that preparation from 2-NA as well as 4-NP. As-prepared DFNS/GO/X (X = Pd, Au, Cu) nanostructures are used for the 4-nitrophenol and 2-nitroaniline reduction that causing high efficiency of the reaction by taking into account of chemoselectivity.