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CoO nanocrystals as a highly active catalyst for the generation of hydrogen from hydrolysis of sodium borohydride

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CoO nanocrystals as a highly active catalyst for the generation of hydrogen from hydrolysis of sodium borohydride.htm (413bytes)
Date
2012-12-15
Author
Lu, Aolin
Chen, Yuanzhi
Jin, Jiarui
Yue, Guang-Hui
Peng, Dong-Liang
彭栋梁
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  • 材料学院-已发表论文 [2359]
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Abstract
We report the excellent catalytic performance of CoO nanocrystals on the catalytic hydrolysis of alkaline NaBH4 solutions. COO nanocrystals with octahedral and near-spherical shapes are synthesized using a facile chemical solution method that employed cobalt acetate tetrahydrate as metal precursor in the presence of oleylamine. The octahedral CoO nanocrystals typically have a size of 40-50 nm, while the near-spherical nanocrystals have a size varying from 8 to 13 nm. Both of them have a face centered cubic (fcc) crystalline phase. Catalytic tests show that the as-synthesized CoO nanocrystals exhibit very high activities for the H-2 generation from the hydrolysis of alkaline NaBH4 solutions. The maximum hydrogen generation rate of the as-synthesized CoO nanocrystals exceeds most reported values of transition metal or noble metal contained catalysts performed in alkaline NaBH4 solutions. The influences of shape on the catalytic behaviors of as-synthesized COO nanocrystals are also compared and analyzed. The results presented in this study indicate that CoO nanocrystals are a promising candidate to replace noble metal catalysts in the H-2 generation from the hydrolysis of borohydrides. (C) 2012 Elsevier B.V. All rights reserved.
Citation
JOURNAL OF POWER SOURCES,2012(220):391-398
URI
WOS:000309990300054
http://dx.doi.org/10.1016/j.jpowsour.2012.08.010
https://dspace.xmu.edu.cn/handle/2288/14092

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