Graphene supported Ru@Co core-shell nanoparticles as efficient catalysts for hydrogen generation from hydrolysis of ammonia borane and methylamine borane

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• 作者：Nan Cao ; Jun Su ; Wei Luo ; Gongzhen Cheng
• 关键词：Core&ndash ; shell ; Ruthenium ; Cobalt ; Graphene ; Hydrogen storage
• 刊名：Catalysis Communications
• 出版年：5 January, 2014
• 年：2014
• 卷：43
• 期：Complete
• 页码：47-51
• 全文大小：977 K

文摘

Well-dispersed graphene supported Ru@Co core-shell nanoparticles were synthesized by one-step in situ co-reduction of aqueous solution of ruthenium(III) chloride hydrate, cobalt(II) chloride hexahydrate and graphite oxide (GO) with ammonia borane under ambient condition. The as-synthesized nanoparticles exert excellent catalytic activities, with the turnover frequency (TOF) value of 344 mol H₂ min^鈭?#xA0;1 (mol Ru)^鈭?#xA0;1 for catalytic hydrolysis of ammonia borane, which is the second highest value ever reported. The as-synthesized catalysts exert superior catalytic activities than the monometallic (Ru/graphene), alloy (RuCo/graphene), and graphene-free Ru@Co counterparts towards the hydrolytic dehydrogenation of AB. Moreover, the catalytic hydrolysis of MeAB at room temperature was also studied. These Ru@Co NPs are a promising catalyst for amine-borane hydrolysis and for developing a highly efficient hydrogen storage system for fuel cell applications.