%0 Journal Article
%T Shape Controlled Synthesis of Barium Carbonate Microclusters and Nanocrystallites using Natural Polysachharide ¨C Gum Acacia
%J American Journal of Materials Science
%@ 2162-8424
%D 2012
%I 
%R 10.5923/j.materials.20120201.02
%X Different morphosynthesis strategies for BaCO3 using natural polysaccharide-gum acacia (GA) as templating species are presented. The influence of GA with different functionalities such as ¨COH, ¨CCOOH and -NH2 on the crystallization and structure formation was investigated. Some interesting morphologies, including rods, dumbbell, double-dumbbell and flower like clusters, can be readily generated by using GA as cooperative modifier in the mineralization process, under the conditions of 0.5%, 1% of templating species and at ambient temperature. The modifier GA and its concentration is the key factor in this system. In continuation, morphology was also examined for mixed metal carbonates (Ba-LaCO3, Ba-TbCO3). The possible formation mechanism of the nanocrystallites is discussed. 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).
%K Biomaterials
%K Composite Materials
%K Crystal Growth
%K Electron Microscopy
%U http://article.sapub.org/10.5923.j.materials.20120201.02.html