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Fabrication of magnetic bimetallic Fe₃O₄@Au–Pd hybrid nanoparticles with recyclable and efficient catalytic properties
- Xia, Qingdong, Fu, Shanshan, Ren, Guojuan, Chai, Fang, Jiang, Jingjie, Qu, Fengyu
- RSC advances 2016 v.6 no.60 pp. 55248-55256
- X-ray diffraction, X-ray photoelectron spectroscopy, catalysts, catalytic activity, chemical reactions, energy-dispersive X-ray analysis, magnetism, nanoparticles, nitrophenols, potassium, transmission electron microscopy
- Bimetallic nanostructures show exciting potential as materials for effective catalysis. Magnetically recoverable bimetallic nanoparticles are promising catalysts for chemical reactions. Here, Fe₃O₄@Pd and Fe₃O₄@Au–Pd hybrid nanoparticles were synthesized and used as catalysts. The morphology, composition, and structure of the Fe₃O₄@Pd and Fe₃O₄@Au–Pd hybrid nanoparticles were fully characterized by scanning and transmission electron microscopy, energy dispersive spectroscopy, high angle annular dark-field scanning TEM, X-ray powder diffraction, X-ray photoelectron spectroscopy, etc. The Fe₃O₄@Pd and Fe₃O₄@Au–Pd nanoparticles show excellent catalytic activity towards the reduction of nitrophenols and potassium hexacyanoferrate(iii). In addition, the magnetic bimetallic heterogeneous nanoparticles can be easily recycled, showing good reusability; conversion higher than 99% was achieved after 6 cycles.