Formation of rod-shaped calcite crystals by microemulsion-based synthesis

被引：69

作者：

Liu, Dongxia

Yates, Matthew Z. ^{[1
]}

机构：

[1] Univ Rochester, Dept Chem Engn, Rochester, NY 14627 USA

[2] Univ Rochester, Laser Energet Lab, Rochester, NY 14627 USA

来源：

LANGMUIR | 2006年 / 22卷 / 13期

关键词：

D O I：

10.1021/la060612i

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel rod-shaped calcite crystals are formed by precipitation from cetyltrimethylammonium bromide ( CTAB)/1-pentanol/cyclohexane microemulsions containing calcium chloride and ammonium carbonate. The calcium carbonate initially precipitates as hexagon-shaped vaterite crystals. The vaterite crystals transform to unusual rod-shaped calcite crystals over several days. The rod-shaped calcite crystals are prismatic, with the longest crystal axis displaying ( 110) crystal faces. A possible mechanism of crystal growth is discussed. The elongated shape of the crystals facilitates the assembly into hierarchical structures and can allow the crystals to be used as templates for fabricating advanced materials.

引用

页码：5566 / 5569

页数：4

共 28 条

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