One-pot synthesis of pompon-like magnetic hollow SiO2-supported Ag nanoparticles for catalytic application

In this paper, we develop a novel pompon-like magnetic hollow SiO 2 -supported Ag (SiO 2 @Ag) nanoparticles , in which small silver and magnetic nanoparticles were loaded on the hollow silica shell by one-pot solvothermal method . FT-IR, XRD , SEM, TEM and BET were applied to characterized the structure and morphology of the magnetic hollow SiO 2 @Ag nanoparticles. The synthesized material has not only high stability and monodispersity , but also uniform surface element distribution along with good magnetic response. On this basis, we studied the catalytic performance of this pompon-like magnetic hollow SiO 2 @Ag nanoparticles for the reduction of aromatic nitro compounds, and further carried out extended researches on substrates scope. Research results indicate that the pompon-like magnetic hollow SiO 2 @Ag nanoparticles have broad-spectrum catalytic activity for the reduction of aromatic nitro compounds. After recycling for 8 times, it can still maintain 90% catalytic efficiency. This study provides a facile strategy for constructing hollow hierarchical structure, and expands the application of noble metal nanoparticles in organic transformation.