title: In situ facile synthesis of Ru-based core-shell nanoparticles supported on carbon black and their high catalytic activity in the dehydrogenation of amine-boranes.
abstract: Well-dispersed core-shell Ru@M (M=Co, Ni, Fe) nanoparticles (NPs) supported on carbon black have been synthesized via a facile in situ one-step procedure under ambient condition. Core-shell Ru@Co NPs were synthesized and characterized for the first time. The as-synthesized Ru@Co and Ru@Ni NPs exhibit superior catalytic activity in the hydrolysis of ammonia borane compared with their monometallic and alloy counterparts. The Ru@Co/C NPs are the most reactive, with a turnover frequency (TOF) value of 320 (mol H 2 min(-1)) molRu (-1) and activation energy (Ea) of 21.16 kJ mol(-1). Ru@Ni/C NPs are the next most active, whereas Ru@Fe/C NPs are almost inactive. Additionally, the as-synthesized NPs supported on carbon black exhibit higher catalytic activity than catalysts on other conventional supports, such as SiO2 and γ-Al2O3.
authors.affiliation: College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072 (P. R. China).
authors.forename: Nan
authors.initials: N
authors.lastname: Cao
authors.forename: Jun
authors.initials: J
authors.lastname: Su
authors.forename: Xinlin
authors.initials: X
authors.lastname: Hong
authors.forename: Wei
authors.initials: W
authors.lastname: Luo
authors.forename: Gongzhen
authors.initials: G
authors.lastname: Cheng
keywords: amine-boranes; hydrogen storage; nanoparticles; ruthenium