| 油炸圈饼状Cd(OH)2微结构的合成与可控生长机理 |
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| 引用本文： | 彭银,刘正银,叶峰,魏先文.油炸圈饼状Cd(OH)2微结构的合成与可控生长机理[J].中国化学,2009,27(2):295-298. |
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| 作者姓名： | 彭银 刘正银 叶峰 魏先文 |
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| 作者单位： | 安徽省功能性分子固体重点实验室，安徽师范大学化学与材料科学学院，芜湖，241000，中国 |
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| 摘 要： | 聚丙烯酰胺（PAM）表面活性剂的作用下，在温和的低温水溶液中，合成了Cd(OH)2油炸圈饼状微米结构。这种结构是由单晶结构的六方片状Cd(OH)2按一定排列方式自组装而成。在羰基修饰的PAM（PAM-COOH）表面活性剂作用下，得到中心有孔的油炸圈饼纳米结构。可能的生长机理为表面活性剂控制下Cd(OH)2纳米片经历有序连接过程，最终形成油炸圈饼状结构。聚合物诱引晶体生长与调控纳米晶自组装将提供了一条有效的路径来合成具有复杂形貌与特殊结构的无机和无机-有机杂化材料。
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| 关 键 词： | Cd(OH)2 生长机理 聚合物 可控合成 |
| 收稿时间： | 2008-6-19 |
| 修稿时间： | 2008-8-12 |
Synthesis of Cd(OH)2 with Doughnut Microstructure and Its Controlled Growth Mechanism |
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| Yin PENG,Zhengyin LIU,Feng YE,Xianwen WEI.Synthesis of Cd(OH)2 with Doughnut Microstructure and Its Controlled Growth Mechanism[J].Chinese Journal of Chemistry,2009,27(2):295-298. |
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| Authors: | Yin PENG Zhengyin LIU Feng YE Xianwen WEI |
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| Institution: | 1. Tel.: 0086‐0553‐3869303;2. Fax: 0086‐0553‐3869303;3. Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China |
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| Abstract: | Doughnut‐like Cd(OH)2 microstructure was obtained by a facile solution‐based method using polymer polyacrylamide (PAM) as a crystal growth modifier. Hexagonal flake‐like Cd(OH)2 is the building‐block to assemble doughnut‐like microstructures. The block concaves from one side when PAM is present in the synthesis system. However, nano‐size Cd(OH)2 doughnuts with a hole in the middle part were formed if carboxyl‐functionalized polyacrylamide (PAM‐COOH) was used as a crystal growth modifier. A possible mechanism for the Cd(OH)2 microstructure formation based on typical oriented attachment process in the presence of polymer was discussed. Polymer‐directed crystal growth and mediated self‐assembly of nanocrystals may promise synthesis routes for variously ordered inorganic and inorganic‐organic hybrid materials with complex forms and special structures. |
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| Keywords: | Cd(OH)2 growth mechanism controlled synthesis polymer |
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