TITLE:
Orientated Growth of Hemispherical Calcium Carbonate Beneath Protein Langmuir Monolayer
AUTHORS:
Zhonghui Xue, Ning Xue
KEYWORDS:
Hemispherical Calcium Carbonate
JOURNAL NAME:
Open Access Library Journal,
Vol.7 No.5,
May
9,
2020
ABSTRACT: Oriented calcium carbonate crystals have been grown beneath bovine serum albumin (BSA) Langmuir monolayers at the air-solution interface from supersaturated calcium bicarbonate solutions. The calcium carbonate prepared was characterized by XRD, SEM, TEM and SAED. It was found the crystal morphologies changed from amorphous calcium carbonate (ACC) to regular hemispherical calcite crystals with the prolonging of the time. These observations suggest that the process is step by step, during which the orientation of the crystalline phase was controlled by the BSA Langmuir monolayer template. These results provide new insight into the proteins-biomineral interaction, which can be extended for shape control over other minerals or inorganic-organic hybrid materials.