论文部分内容阅读
In this paper,highly stable,powerful,and recyclable magnetic nanoparticles tethered N-heterocyclic carbene-palladium(Ⅱ)((CH3)3-NHC-Pd@Fe3O4)as magnetic nanocatalyst was successfully synthesized from a simplistic multistep synthesis under aerobic conditions through easily available low-cost chemicals.Newly synthesized(CH3)3-NHC-Pd@Fe3O4 mag-netic nanocatalyst was characterized from various analytical tools and catalytic potential of the(CH3)3-NHC-Pd@Fe3O4 magnetic nanocatalyst was studied for the catalytic reduction of toxic 4-nitrophenol(4-NP),hexavalent chromium(Cr(Ⅵ)),Methylene Blue(MB)and Methyl Orange(MO)at room temperature in aqueous media.UV-Visible spectroscopy was employed to monitor the reduction reactions.New(CH3)3-NHC-Pd@Fe3O4 magnetic nanocatalyst ex-hibited excellent catalytic activity for the reduction of toxic environmental pollutants.More-over,(CH3)3-NHC-Pd@Fe3O4 magnetic nanocatalyst could be easily and rapidly separated from the reaction mixture with the help of an external magnet and recycled minimum five times in reduction of 4-NP,MB,MO and four times in Cr(Ⅵ)without significant loss of cat-alytic potential and remains stable even after reuse.