pH-assisted crystallization of Cu2O: chemical reactions control the evolution from nanowires to polyhedra
文献类型：期刊论文
| 作者 | Chen KF ; Xue DF |
| 刊名 | crystengcomm
 |
| 出版日期 | 2012 |
| 卷号 | 14期号:23页码:8068-8075 |
| 关键词 | CUPROUS-OXIDE ROOM-TEMPERATURE BRANCHING GROWTH NANOCRYSTALS OXIDATION NANOPARTICLES MICROSPHERES FABRICATION NANOSCALE REDUCTION |
| ISSN号 | 1466-8033 |
| 通讯作者 | xue df |
| 中文摘要 | this work reports the chemical reaction-controlled crystallization of cu2o with systematic shape evolution from nanowires, through nanoparticle-aggregated spheres and octahedra to truncated octahedra and cuboctahedra by a two-step "precursor formation-crystallization" process. the results reveal that the shape, size, composition variation and overall reaction mechanism were mostly determined by the ph-dependent precursor species cu-2(oh)(3)no3, cu(oh)(2) and cu(oh)(4)(2-). the addition of specific amounts of oh- to the solution is the key to adjusting the reduction and complexation reactions that control the crystallization of cu2o; high ph enhanced the reducing power of starch and the complexation ability of oh-. cu2o or cu can be selectively crystallized under alkaline or acidic conditions due to the ph-dependence of the reduction reaction. the intriguing results show that the size of truncated octahedra first increases, then decreases with increasing ph owing to the competition between the complexation and redox reactions. the results demonstrate that control of ph-dependent chemical reactions is an effective way to adjust the crystallization of oxides and their electrochemical activity. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000310467600039 |
| 公开日期 | 2013-06-09 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/48438]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen KF,Xue DF. pH-assisted crystallization of Cu2O: chemical reactions control the evolution from nanowires to polyhedra[J]. crystengcomm,2012,14(23):8068-8075. |
| APA | Chen KF,&Xue DF.(2012).pH-assisted crystallization of Cu2O: chemical reactions control the evolution from nanowires to polyhedra.crystengcomm,14(23),8068-8075. |
| MLA | Chen KF,et al."pH-assisted crystallization of Cu2O: chemical reactions control the evolution from nanowires to polyhedra".crystengcomm 14.23(2012):8068-8075. |
入库方式： OAI收割
来源：长春应用化学研究所
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