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Bioinspired synthesis of morphologically controlled SrCO 3 superstructures by natural gum acacia
Author(s) -
Sreedhar B.,
Satyavani Ch.,
Keerthi Devi D.,
Rambabu C.,
Basaveswara Rao M. V.,
Saratchandra Babu M.
Publication year - 2011
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201100038
Subject(s) - thermogravimetric analysis , scanning electron microscope , crystallization , fourier transform infrared spectroscopy , aqueous solution , transmission electron microscopy , chemical engineering , metal , materials science , morphology (biology) , infrared spectroscopy , biomimetic synthesis , chemistry , nuclear chemistry , crystallography , nanotechnology , stereochemistry , organic chemistry , metallurgy , composite material , geology , engineering , paleontology
Crystallization of strontium carbonate is performed in aqueous solution using Gum Acacia (GA) as crystal growth modifier. A novel study of hierarchical assembly, specifically interacting inorganic and natural component without introduction of other additives was studied. SrCO 3 structures exhibiting the morphologies of well defined nanocrystallites in the form of clusters of hexagonal rods, flower shaped, cross like, doughnut shaped and rice grain shaped are identified by optimizing the conditions and concentration of GA. In continuation, morphology was also examined for mixed metal carbonates (Sr‐LaCO 3 , Sr‐TbCO 3 ). The results indicate that –OH, –COOH and ‐NH 2 functional group moieties of GA play a remarkable role in inhibiting growth morphology of metal carbonates and mixed metal carbonates. Structural characterization of the synthesized materials was investigated by Powder X‐ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive analysis (EDAX), Transmission electron microscopy (TEM), Thermogravimetric analysis (TGA) coupled Mass (MS) and Fourier transform infrared spectroscopy (FT‐IR). This synthesis method can be easily extended to a variety of inorganic nanoparticles, thereby enabling exact control over material properties. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)