Biosynthesis of different morphologies of CaCO3 nanomaterial assisted by thermophilic strains HEN-Qn1 |
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| Authors: | Ping Li Changzhu Wu Qingsheng Wu Jian Li Hao Li |
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| Affiliation: | (1) School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China;(2) Department of Chemistry, Tongji University, Shanghai, 200092, China;(3) Key Laboratory of Tea Biochemistry & Biotechnology of Ministry of Agriculture & Ministry of Education, Anhui Agricultural University, Hefei, 230036, China |
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| 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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| Keywords: | Biosynthesis CaCO3 Bacteria Nanorods Nanospheres Extracellularly Intracellularly Nanomaterial |
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