A novel morphology of aragonite and an abnormal polymorph transformation from calcite to aragonite with PAM and CTAB as additives

被引：57

作者：

Nan, Zhaodong ^{[1
]}

Shi, Zuoyi

Yan, Bianqing

Guo, Rong

Hou, Wanguo

机构：

[1] Yangzhou Univ, Coll Chem & Chem Engn, Yangzhou 225002, Peoples R China

[2] Qufu Normal Univ, Coll Chem Sci, Qufu 273165, Peoples R China

[3] Shandong Univ, Key Lab Colloid & Interface Chem State Educ Minis, Jinan 250100, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 317卷 / 01期

关键词：

calcium carbonate; polyacrylamide (PAM); cetyl trimethyl ammonium bromide (CTAB); structure conversion; morphology;

D O I：

10.1016/j.jcis.2007.09.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The abnormal structure conversion of CaCO3 from calcite to aragonite was investigated with a mixture of polyacrylamide (PAM) and cetyltrimethylammonium bromide (CTAB) as additives by a hydrothermal method. A novel morphology of aragonite, "magnified" cubic shape, was observed. In order to investigate the effects of PAM and experimental temperature on the morphology and phase of CaCO3, the samples were synthesized without any additives and with PAM as template at 90 and 120 degrees C, respectively. The results indicate that both the interaction between the mixed template and the CaCO3 and the elevated experiment temperature play important roles in the process of polymorph transformation. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：77 / 82

页数：6

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