Article Title

One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane

Authors

Kengo Aranishi, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan Graduate School of Engineering, Kobe University, Nada Ku, Kobe, Hyogo 657-8501, Japan
Hai-Long Jiang, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
Tomoki Akita, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
Masatake Haruta, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Minami-Osawa, Hachioji, Tokyo 192-0397, Japan Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
Qiang Xu, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan Graduate School of Engineering, Kobe University, Nada Ku, Kobe, Hyogo 657-8501, Japan Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan

Keywords

Triple-layered, core–shell nanoparticles, heterogeneous catalysis, ammonia borane, hydrogen generation

Abstract

Magnetically recyclable Au/Co/Fe core–shell nanoparticles (NPs) have been successfully synthesized via a one-step in situ procedure. Transmission electron microscope (TEM), energy dispersive X-ray spectroscopic (EDS), and electron energy-loss spectroscopic (EELS) measurements revealed that the trimetallic Au/Co/Fe NPs have a triple-layered core–shell structure composed of a Au core, a Co-rich inter-layer, and a Fe-rich shell. The Au/Co/Fe core–shell NPs exhibit much higher catalytic activities for hydrolytic dehydrogenation of ammonia borane (NH3BH3, AB) than the monometallic (Au, Co, Fe) or bimetallic (AuCo, AuFe, CoFe) counterparts.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-011-0174-1

Publisher

Tsinghua University Press

Recommended Citation

Kengo Aranishi,Hai-Long Jiang,Tomoki Akita,Masatake Haruta,Qiang Xu, One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane. NanoRes.2011, 4(12): 1233–1241