Graphene Supported cobalt(0) nanoparticles for hydrolysis of ammonia borane

被引：86

作者：

Yang, Lan ^{[1
]}

Cao, Nan ^{[1
]}

Du, Cheng ^{[1
]}

Dai, Hongmei ^{[1
]}

Hu, Kai ^{[1
]}

Luo, Wei ^{[1
,2
]}

Cheng, Gongzhen ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Hubei, Peoples R China

[2] Wuhan Univ, Suzhou Inst, Suzhou 215123, Jiangsu, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 115卷

基金：

中国国家自然科学基金;

关键词：

Nanoparticles; Graphene; Hydrolysis; Ammonia borane; Energy storage and conversion; CORE-SHELL NANOPARTICLES; HYDROGEN GENERATION; EFFICIENT CATALYSTS; METHYLAMINE BORANE; ROOM-TEMPERATURE; DEHYDROGENATION;

D O I：

10.1016/j.matlet.2013.10.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cobalt(0) nanoparticles supported on graphene have been synthesized via a one-step in situ procedure, using the mixture of ammonia borane (AB) and sodium borohydride (NaBH4) as the reducing agents under ambient temperature. Compared with NaBH4, the as-prepared Co/graphene NPs which reduced by the mixture of NaBH4/AB exhibit superior catalytic activity towards the hydrolytic dehydrogenation of. AB. A kinetic study shows that the catalytic hydrolysis of AB is first order with respect to the concentration of the as as-synthesized NPs. The turnover frequency (TOF) is 13.8 mol H-2 min(-1) (mol Co)(-1), which is higher than most of the non-noble metal catalysts, and even noble-metal based NPs. The activation energy has been measured to be 32.75 kJ mol(-1), which is lower than many reported values for the catalytic hydrolytic dehydrogenation of ammonia borane. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：113 / 116

页数：4

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