Self-assembled growth of hollow spheres with octahedron-like Co nanocrystals via one-pot solution fabrication
文献类型：期刊论文
| 作者 | Wang, Xi1,2; Yuan, Fangli1; Hu, Peng1,2; Yu, Lingjie1,2; Bai, Liuyang1,2 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2008-06-19 |
| 卷号 | 112期号:24页码:8773-8778 |
| 关键词 | magnetic-properties cobalt nanoparticles surface oxide shapes chains |
| ISSN号 | 1932-7447 |
| 其他题名 | J. Phys. Chem. C |
| 中文摘要 | In this work, we report a simple one-pot approach to prepare hollow Co microspheres via self-assembly of octahedron-like nanocrystals. Uniform hollow Co spherical assemblies, prepared via a facile solvothermal reduction approach in the presence of NaCl, were composed of ordered nanooctahedra with a thickness of about 80-120 nm. The formation mechanism (NaCl-assisted Ostwald ripening) has been investigated with TEM/HRTEM/SEM/XRD methods. Surface morphologies of Co hollow spheres have been finely modulated from rough to smooth surface through altering reaction conditions (such as time, temperature, and amount of NaCl). The interior-cavity size of the Co hollow sphere has been well tunable by controlling reaction time or temperature. These materials exhibit good ferromagnetic characteristics, showing their potential applications for catalysts and other related devices. The influence of surface morphology, the interior cavity size, and surface modification upon the magnetic properties of hollow Co spheres have been systematically studied. The possible reasons for diverse magnetic properties of products obtained under different conditions are also discussed. |
| 英文摘要 | In this work, we report a simple one-pot approach to prepare hollow Co microspheres via self-assembly of octahedron-like nanocrystals. Uniform hollow Co spherical assemblies, prepared via a facile solvothermal reduction approach in the presence of NaCl, were composed of ordered nanooctahedra with a thickness of about 80-120 nm. The formation mechanism (NaCl-assisted Ostwald ripening) has been investigated with TEM/HRTEM/SEM/XRD methods. Surface morphologies of Co hollow spheres have been finely modulated from rough to smooth surface through altering reaction conditions (such as time, temperature, and amount of NaCl). The interior-cavity size of the Co hollow sphere has been well tunable by controlling reaction time or temperature. These materials exhibit good ferromagnetic characteristics, showing their potential applications for catalysts and other related devices. The influence of surface morphology, the interior cavity size, and surface modification upon the magnetic properties of hollow Co spheres have been systematically studied. The possible reasons for diverse magnetic properties of products obtained under different conditions are also discussed. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | MAGNETIC-PROPERTIES ; COBALT ; NANOPARTICLES ; SURFACE ; OXIDE ; SHAPES ; CHAINS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000256738900008 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2872]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi Phase Complex System, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xi,Yuan, Fangli,Hu, Peng,et al. Self-assembled growth of hollow spheres with octahedron-like Co nanocrystals via one-pot solution fabrication[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(24):8773-8778. |
| APA | Wang, Xi,Yuan, Fangli,Hu, Peng,Yu, Lingjie,&Bai, Liuyang.(2008).Self-assembled growth of hollow spheres with octahedron-like Co nanocrystals via one-pot solution fabrication.JOURNAL OF PHYSICAL CHEMISTRY C,112(24),8773-8778. |
| MLA | Wang, Xi,et al."Self-assembled growth of hollow spheres with octahedron-like Co nanocrystals via one-pot solution fabrication".JOURNAL OF PHYSICAL CHEMISTRY C 112.24(2008):8773-8778. |
入库方式： OAI收割
来源：过程工程研究所
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