Tunable electrochemical preparation of cobalt micro/nanostructures and their morphology-dependent wettability property
文献类型：期刊论文
| 作者 | Qiu, Ri1,2; Zhang, Dun1; Wang, Peng1 ; Zhang, Xiao Li3; Kang, Young Soo4; Zhang, D (reprint author), Chinese Acad Sci, Key Lab Corros Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
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| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2011-12-30 |
| 卷号 | 58页码:699-706 |
| 关键词 | Electrochemical Crystal Growth Cobalt Morphology Critical Overpotential Superhydrophobicity Superhydrophilicity |
| ISSN号 | 0013-4686 |
| DOI | 10.1016/j.electacta.2011.10.028 |
| 文献子类 | Article |
| 英文摘要 | A versatile cobalt micro/nanostructure preparation method via a facile electrochemical growth approach is reported in this study. Based on the existing theoretical analysis, the various crystal growth parameters, including the potential, concentration and temperature, act as parameters to impact the metallic crystal growth rate and the resultant morphology. These parameters were varied to elucidate the growth rate and morphology changes. Electron microscopy technique was applied to reveal the corresponding crystal morphology, which demonstrates that the potential can consequently impact the crystal shapes formed, from bump to flower and dendrite shapes. However, in the current experiments, the morphology achieved by changing the concentration and temperature was a dendritic structure, which suggests that the growth conditions promoted a dendritic structure formation regime. Based on the structures grown at various potentials, without further surface modifications, a morphology-dependent wettability trend exhibited from the superhydrophobic to superhydrophilic structures. The superhydrophobicity stems from the small contact areas of the tips of the flower-like structure. Meanwhile, the superhydrophilicity is due to the nanometer-scale channels existing in the hierarchical structures of the dendritic crystals, in which the capillary effect draws water droplets to spread on the surface rapidly. (C) 2011 Elsevier Ltd. All rights reserved.; A versatile cobalt micro/nanostructure preparation method via a facile electrochemical growth approach is reported in this study. Based on the existing theoretical analysis, the various crystal growth parameters, including the potential, concentration and temperature, act as parameters to impact the metallic crystal growth rate and the resultant morphology. These parameters were varied to elucidate the growth rate and morphology changes. Electron microscopy technique was applied to reveal the corresponding crystal morphology, which demonstrates that the potential can consequently impact the crystal shapes formed, from bump to flower and dendrite shapes. However, in the current experiments, the morphology achieved by changing the concentration and temperature was a dendritic structure, which suggests that the growth conditions promoted a dendritic structure formation regime. Based on the structures grown at various potentials, without further surface modifications, a morphology-dependent wettability trend exhibited from the superhydrophobic to superhydrophilic structures. The superhydrophobicity stems from the small contact areas of the tips of the flower-like structure. Meanwhile, the superhydrophilicity is due to the nanometer-scale channels existing in the hierarchical structures of the dendritic crystals, in which the capillary effect draws water droplets to spread on the surface rapidly. (C) 2011 Elsevier Ltd. All rights reserved. |
| 学科主题 | Electrochemistry |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000298765300094 |
| 公开日期 | 2012-07-03 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/11472]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Zhang, D (reprint author), Chinese Acad Sci, Key Lab Corros Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Corros Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Monash Univ, ARC Ctr Excellence Electromat Sci, Clayton, Vic 3800, Australia 4.Sogang Univ, Dept Chem, Seoul 121742, South Korea |
| 推荐引用方式 GB/T 7714 | Qiu, Ri,Zhang, Dun,Wang, Peng,et al. Tunable electrochemical preparation of cobalt micro/nanostructures and their morphology-dependent wettability property[J]. ELECTROCHIMICA ACTA,2011,58:699-706. |
| APA | Qiu, Ri,Zhang, Dun,Wang, Peng,Zhang, Xiao Li,Kang, Young Soo,&Zhang, D .(2011).Tunable electrochemical preparation of cobalt micro/nanostructures and their morphology-dependent wettability property.ELECTROCHIMICA ACTA,58,699-706. |
| MLA | Qiu, Ri,et al."Tunable electrochemical preparation of cobalt micro/nanostructures and their morphology-dependent wettability property".ELECTROCHIMICA ACTA 58(2011):699-706. |
入库方式： OAI收割
来源：海洋研究所
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