Abstract
Thermophilic bacterial strains HEN-Qn1 were incubated at 60 °C in a solution containing calcium chloride. With slow release of CO2 metabolic end products from the bacteria, CaCO3 nanomaterials were found after 12 h through a transmission electron microscope (TEM). CaCO3 nanorods were obtained extracellularly, whereas a unique morphology of nanosphere was observed intracelluarly. A single crystal was further characterized by electron pattern (ED) and X-ray powder diffraction (XRD). Moreover, a putative mechanism has been proposed based on theoretical analyses and experimental evidences. These results indicated that thermophilic bacteria had a well-controlled effect during the crystal growth of inorganic materials, which provided us a promising application of bacteria in biosynthesis of nanomaterials.
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Acknowledgment
This work was supported by the National Natural Science Foundation of China (No. 50772074), the Nano-Foundation of Shanghai (No. 0652nm007), and Innovation Program of Shanghai Municipal Education Commission.
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Li, P., Wu, C., Wu, Q. et al. Biosynthesis of different morphologies of CaCO3 nanomaterial assisted by thermophilic strains HEN-Qn1. J Nanopart Res 11, 903–908 (2009). https://doi.org/10.1007/s11051-008-9476-y
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DOI: https://doi.org/10.1007/s11051-008-9476-y