Highly dispersed Pd nanoparticles supported by magnetically separable Fe 3 O 4 @ SiO 2 nanotube for catalytic hydrogenation of nitroaromatics

Selective hydrogenation of nitroaromatics is a crucial industrial reaction, but there are still challenges in developing nanocatalysts with stable active centers, yet easily recyclable characteristics. Here, a magnetically separable Pd/Fe O @SiO nanocatalyst was prepared through the seeding growth o...

Full description

Saved in:
Bibliographic Details
Published inJournal of colloid and interface science Vol. 676; p. 763
Main Authors Sheng, Kefa, Xia, Hongyu, Ge, Jianping
Format Journal Article
LanguageEnglish
Published United States 15.12.2024
Subjects
Magnetically separable
Nanocatalyst
FeO@SiO nanotube
Hydrogenation of nitroaromatics
Online AccessGet full text

Cover

More Information
Summary:Selective hydrogenation of nitroaromatics is a crucial industrial reaction, but there are still challenges in developing nanocatalysts with stable active centers, yet easily recyclable characteristics. Here, a magnetically separable Pd/Fe O @SiO nanocatalyst was prepared through the seeding growth of silica on the Fe O nanocrystal cluster (NC) followed by in situ reduction of Pd nanoparticles (NPs) on the amino group modified Fe O @SiO nannotube (NT). The nanocatalyst showed good activity and stability in the hydrogenation of a series of nitroaromatics as the Pd NPs were highly dispersed on the nanotubes. Meanwhile, it could be easily separated from the reaction solution and well-redispersed in the solvent for the next-round reaction due to the superparamagnetic property of the Fe O NC and the good dispersibility of silica in many organic solvents. The magnetically separable nanocatalyst combined the high activity of the nanocatalyst and the convenient separation of a traditional heterogeneous catalyst, which effectively promote the practical application of nanomaterials in catalysis.
ISSN:1095-7103