Mechanism of crystallization of CaCO3 in system H2O-CaCl2-Na2CO3-1,2-Bis(4-aminophenoxy)ethane-N,N,N ',N '-tetraacetic acid-cetyltrimethylammonium bromide

作者：Zhang Chunyan^*; Zhu Xuemei; Zhu Jinmiao; Huang Fangzhi; Shen Yuhua; Xie Anjian

来源：Russian Journal of Physical Chemistry, 2013, 87(7): 1222-1227.

DOI：10.1134/S003602441307039X

• biomineralization
• crystal growth
• calcium carbonate
• vesicles

The growth characteristics of calcium carbonate (CaCO3) in the mixed systems of 1,2-bis(4-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA) and cetyltrimethyl ammonium bromide (CTAB) were studied in our experiments. The as-prepared products were characterized by scanning electron micro-scope and X-ray diffraction. Calcite and vaterite with various morphologies were contained in the BAPTA single system and the mixed systems with CTAB/BAPTA molar ratio of 1: 2 and 1: 1.25, while only calcite produced in the mixed systems with CTAB/BAPTA molar ratio of 1: 5, 1: 1, 1: 0.67 and pure CTAB system. The possible formation mechanisms of CaCO3 produced in different solutions were discussed in the end.

• 出版日期2013-7
• 单位合肥师范学院; 安徽农业大学