Nano Archive

Biosynthesis of different morphologies of CaCO3 nanomaterial assisted by thermophilic strains HEN-Qn1

Li, Ping and Wu, Changzhu and Wu, Qingsheng and Li, Jian and Li, Hao (2009) Biosynthesis of different morphologies of CaCO3 nanomaterial assisted by thermophilic strains HEN-Qn1. Journal of Nanoparticle Research, 11 (4). pp. 903-908.

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Official URL: http://www.springerlink.com/content/064vr252540225...

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.

Item Type:Article
ID Code:4525
Deposited By:Prof. Alexey Ivanov
Deposited On:08 May 2009 06:21
Last Modified:08 May 2009 09:53

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