A novel quasi-monodisperse, superparamagnetic Pd/Fe3O 4 catalyst was synthesized for effective catalytic bromate reduction. The catalyst was prepared by dispersing nanoparticles of Pd (weight percent up to 1%) on the surface of superparamagnetic Fe3O4 microspheres with 300-500 nm in diameter and 10-20 nm in grain size. Complete reduction of bromate by this Pd/Fe3O4 catalyst was demonstrated within a short period (<2 h) over a range of pH values, in the presence of a variety of co-existing ions, and after multiple cycles. In addition, the superparamagnetic nature of the catalyst enhanced its good dispersion in water during water treatment when there was no external magnetic field, and its high saturation magnetization allowed an easy magnetic separation from water when an external magnetic field was applied after the water treatment. Thus, it could be easily recycled and reused, further enhancing its application potential.
|Original language||English (US)|
|Number of pages||10|
|Journal||Journal of Materials Chemistry A|
|State||Published - Aug 28 2013|
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)