Journal of Nanoparticle Research

, Volume 11, Issue 4, pp 903–908

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

Research Paper

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.

Keywords

Biosynthesis CaCO3 Bacteria Nanorods Nanospheres Extracellularly Intracellularly Nanomaterial 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.School of Life Sciences and TechnologyTongji UniversityShanghaiChina
  2. 2.Department of ChemistryTongji UniversityShanghaiChina
  3. 3.Key Laboratory of Tea Biochemistry & Biotechnology of Ministry of Agriculture & Ministry of EducationAnhui Agricultural UniversityHefeiChina

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