Fern-shaped bismuth dendrites electrodeposited at hydrogen evolution potentials
Fern-shaped bismuth dendrites electrodeposited at hydrogen evolution potentials
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在析氢电位下电沉积蕨形铋枝晶
DOI:
10.1039/c0jm03213a
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发表时间:
2011-02
期刊:
影响因子:
--
通讯作者:
Minli Yang
中科院分区:
文献类型:
--
作者:
Minli Yang
Easy fabrication of nanostructured materials with high porosity and high specific surface area has been drawing much scientific interest. Here, we describe a direct electrodeposition of fern-shaped bismuth dendrites at hydrogen evolution overpotentials without any additive and foreign template. A predeposition step was adopted to adjust and control the nucleation and growth of hydrogen bubbles. Subsequently, the simultaneous electrochemical reductions of Bi3+ and H+ ions were performed at a constant overpotential. Scanning electron microscopy and transmission electron microscopy characterizations showed that the resultant microporous netlike films consisted of fern-shaped single-crystal bismuth dendrites. The formation mechanism was discussed and ascribed to a “stagnant” template effect of hydrogen bubbles, which limited the lateral growth of fern-shaped dendrites. Such a two-step electrodeposition could also be extended to the nanostructure fabrication of other metals and alloys with high hydrogen overpotentials.
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DOI:
10.1021/jp0529873
发表时间:
2005-08
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
G. Bhimarasetti;M. Sunkara
通讯作者:
G. Bhimarasetti;M. Sunkara
影响因子:
1.8
作者:
A. Jagminas;I. Valsiūnas;B. Šimkūnaitė;R. Vaitkus
通讯作者:
A. Jagminas;I. Valsiūnas;B. Šimkūnaitė;R. Vaitkus
影响因子:
6.1
作者:
Minli Yang;Zhanjun Zhang;Zhong-bo Hu;Jinghong Li
通讯作者:
Minli Yang;Zhanjun Zhang;Zhong-bo Hu;Jinghong Li
影响因子:
1
作者:
V. Maksimović;L. Pavlovic;B. Jović;M. Pavlović
通讯作者:
V. Maksimović;L. Pavlovic;B. Jović;M. Pavlović
影响因子:
6.6
作者:
Sandnes, E.;Williams, M. E.;Stafford, G. R.
通讯作者:
Stafford, G. R.