Characterisation of calcium carbonate and its polymorphs from cockle shells (Anadara granosa)

被引：94
|
作者：
Islam, Kh Nurul [1 ]
Bin Abu Bakar, Md Zuki [1 ,4 ]
Noordin, Mustapha M. [2 ]
Bin Hussein, Mohd Zobir [3 ]
Abd Rahman, Norshazlirah Shazlyn Bte [3 ]
Ali, Md Eaqub
机构：
[1] Univ Putra Malaysia, Fac Vet Med, Dept Vet Preclin Sci, Lab Anat & Histol, Serdang 43400, Darul Ehsan, Malaysia
[2] Univ Putra Malaysia, Fac Vet Med, Dept Vet Pathol & Microbiol, Serdang 43400, Darul Ehsan, Malaysia
[3] Univ Putra Malaysia, Fac Sci, Dept Chem, Serdang 43400, Darul Ehsan, Malaysia
[4] Univ Putra Malaysia, Inst Biosci, Serdang 43400, Darul Ehsan, Malaysia
来源：
POWDER TECHNOLOGY | 2011年 / 213卷 / 1-3期
关键词：
Calcium carbonate; Polymorph; Cockle shells; PRECIPITATION; VATERITE; CRYSTALLIZATION; MONOLAYERS; GROWTH; GLYCOL;
D O I：
10.1016/j.powtec.2011.07.031
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Calcium carbonate and its polymorphs from cockle shells (Anadara granosa) and commercial calcium carbonate were characterised using a variable pressure scanning electron microscopes (VPSEM), a transmission electron microscope (TEM), an energy dispersive X- ray analyser (EDX), X-ray diffraction (XRD) and Fourier transmission infrared spectroscopy (FT-IR). Cubic-like calcite crystals of commercial calcium carbonate and rod-like aragonite crystals of cockle shell powders were observed by both SEM and TEM. The EDX results showed that the cockle shells contained more calcium and carbon than the commercial calcium carbonate, whereas the commercial calcium carbonate contained more oxygen than the cockle shells. FT-IR analyses revealed the presence of carbonate groups in both the cockle shells and the commercial calcium carbonate. FT-IR analyses also showed the presence of aragonite in the cockle shells and calcite in the commercial calcium carbonate. XRD analyses showed that the cockle shells powder contained aragonite, whereas the commercial calcium carbonate contained calcite. The cockle shells powder was formed with good quality calcium carbonate and contained calcium carbonate in the aragonite phase. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：188 / 191
页数：4
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