Palladium Nanoparticle Catalyzed Conversion of Iron Nanoparticles into Diameter- and Length-Controlled Fe2P Nanorods


  • This work was supported by MEST (NRF 2009-0090897, KRF-2008-314-C00234, NRF 2010-0014807) and MIHWAF (the Korea Health 21 R&D Project: A085136) to K.L., by the NRL program (R0A-2008-000-20057-0) to S.O.K., and by NRF 2009-0082451 to G.R.Y. We thank KBSI for allowing the usage of their HRTEM, SQUID, GC-MS (operator: Yun Gyong Ahn) instruments and Prof. Sang-Won Lee at Korea Univ for MS measurements.


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Playing a dual role as a catalyst that destabilizes Fe nanoparticles to form soluble precursors in situ and as a catalytic center for nanorod growth allows Pd nanoparticles to transform Fe nanoparticles and a P source into Fe2P nanorods (see scheme). The diameter and length of the Fe2P nanorods can be fine-tuned by means of the diameter of the Pd nanoparticles and the Fe/Pd ratio, respectively.