Boron nitride supported Ni nanoparticles as catalysts for hydrogen generation from hydrolysis of ammonia borane
Boron nitride supported Ni nanoparticles as catalysts for hydrogen generation from hydrolysis of ammonia borane
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DOI：
10.1016/j.jallcom.2016.09.204
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发表时间：
2017-02
影响因子：
6.2
通讯作者：
X. J. Yang;Li Lichao;Sang Wanlu;J. Zhao;X. X. Wang-X.;Chao Yu;X. H. Zhang;C. Tang
中科院分区：
文献类型：
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作者：
X. J. Yang;Li Lichao;Sang Wanlu;J. Zhao;X. X. Wang-X.;Chao Yu;X. H. Zhang;C. Tang
我们报道了负载在氮化硼球（BNSP）和片（BNSH）上的镍纳米颗粒作为氨硼烷（NH3 BH 3，AB）水解制氢的催化剂。通过氧化还原置换反应制备了Ni/BN催化剂。采用X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、能量色散X射线能谱（EDX）和电感耦合等离子体发射光谱（ICP）对样品的结构、形貌和化学组成进行了表征。表征结果表明，Ni原子含量分别为6.8，9.0，9.2和12wt%的Ni/BN催化剂在BNSP和BNSH载体上分散良好。对AB水解的催化活性被发现与负载的Ni/BN催化剂，这表现出良好的循环性能。理论计算表明，BN片显着影响Ni催化剂的电特性，从而其催化性能。
We report on Ni nanoparticles supported on boron nitride spheres (BNSP) and sheets (BNSH) as catalysts for hydrogen generation via hydrolysis of ammonia borane (NH3BH3, AB). The Ni/BN catalysts were prepared through a redox replacement reaction. The structure, morphology, and chemical composition of the obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) equipped with energy dispersive X-ray spectroscopy (EDX), and inductively coupled plasma emission spectroscopy (ICP). The characterization results showed that Ni nanoparticles were well dispersed on the BNSP and BNSH supports for the four Ni/BN catalysts prepared (Ni atomic contents of 6.8, 9.0, 9.2, and 12 wt%). The catalytic activity toward the hydrolysis of AB was found to correlate with the loading of the Ni/BN catalysts, which showed great cycle performance. Theoretical calculations revealed that BN sheets significantly influenced the electric character of Ni catalysts and thereby their catalytic properties.