Polyhedral to nearly spherical morphology transformation of silver microcrystals grown from vapor phase
文献类型：期刊论文
| 作者 | Li, CR ; Lu, NP ; Mei, J ; Dong, WJ ; Zheng, YY ; Gao, L ; Tsukamoto, K ; Cao, ZX |
| 刊名 | JOURNAL OF CRYSTAL GROWTH
 |
| 出版日期 | 2011 |
| 卷号 | 314期号:1页码:324 |
| 关键词 | SHAPE-CONTROLLED SYNTHESIS METAL NANOCRYSTALS SURFACE NANOPARTICLES TEMPERATURE GOLD MICROSTRUCTURES |
| ISSN号 | 0022-0248 |
| 通讯作者 | Li, CR (reprint author), Zhejiang Sci Tech Univ, Dept Phys, Minist Educ, Hangzhou 310018, Zhejiang, Peoples R China. |
| 中文摘要 | Silver microcrystals of various shapes were grown from co-evaporation of Ag(2)O and SiO powders in the nominal evaporating temperature range (heat source temperature) from 800 to 1200 degrees C under a reductive atmosphere. Pathways for the polyhedral to nearly spherical morphology transformation were established. At evaporating temperatures below 900 degrees C the polyhedral crystals are generally bounded by {1 1 1}-facets and {1 0 0}-facets. With increase in evaporation temperature facets of the {1 1 0}-, {2 1 0}- and {3 1 0}-families come forth successively, that make the Ag polyhedron microctystals transform into nearly spherical microcrystals. A mechanism based on the recession of {1 0 0} or {1 1 0} steps induced by the solvent SiO(x) (x similar to 2.0), which modifies the growth kinetics, is proposed to explain the emergence of (2 1 0)- and (3 1 0)-facets at high temperatures. By evaporating at 1200 degrees C, smooth-looking spherical Ag crystals with 6 nm multi-layered steps on the {1 1 1} facets were obtained. These results are also of significant industry relevance when preparation of noble metal particles with high-index facets is of concern. (C) 2010 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10874153, 50772100, 10974227, 20701033]; Science Foundation of Zhejiang Sci-Tech University; Innovation Research Project for Graduate Student of Zhejiang Province [YK 2009051] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51137]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li, CR,Lu, NP,Mei, J,et al. Polyhedral to nearly spherical morphology transformation of silver microcrystals grown from vapor phase[J]. JOURNAL OF CRYSTAL GROWTH,2011,314(1):324. |
| APA | Li, CR.,Lu, NP.,Mei, J.,Dong, WJ.,Zheng, YY.,...&Cao, ZX.(2011).Polyhedral to nearly spherical morphology transformation of silver microcrystals grown from vapor phase.JOURNAL OF CRYSTAL GROWTH,314(1),324. |
| MLA | Li, CR,et al."Polyhedral to nearly spherical morphology transformation of silver microcrystals grown from vapor phase".JOURNAL OF CRYSTAL GROWTH 314.1(2011):324. |
入库方式： OAI收割
来源：物理研究所
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