Peanut-like CaCO3 assemblies with core-shell structure were obtained in polyacrylamide aqueous solution. The as-prepared products were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD). The results indicate that the peanut-like CaCO3 assemblies has some hollows. The shell of the CaCO3 assemblies is composed of calcite rhombohedras, and the core of the CaCO3 assemblies is composed of rod-like aggregates which are assembled by small particles and the core has a radially outward growth structure. The radially outward structure of the core is explained by the fractal growth theory, and the formation of Core/Shell structure is explained by the Ostwald ripening theory.
JIANG Xi-Hua
,
ZHENG Ming-Bo
,
CHEN Hui-Qin
,
PAN Li-Jia
,
TAO Jie
,
CAO Jie-Ming
. Synthesis of Core/Shell Calcium Carbonate Peanut-like Assemblies in Polyacrylamide Aqueous Solution[J]. Journal of Inorganic Materials, 2008
, 23(6)
: 1283
-1286
.
DOI: 10.3724/SP.J.1077.2008.01283
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