Bioinspired synthesis of morphologically controlled SrCO₃ superstructures by natural gum acacia

Abstract

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.

Water mediated growth of oriented single crystalline SrCO3 nanorod arrays on strontium compounds

“…make an incorrect conclusion that the SrCO 3 crystal grows mainly along the (111) face 41,44 . However, such XRD pattern (at ~ 25.5° in Fig.…”

A rapid, green and versatile route to synthesize metal carbonate superstructures via the combination of regenerated silk fibroin and compressed CO2

“…12,[33][34][35][36] Like CaCO 3 and BaCO 3 , various and interesting morphologies of SrCO 3 also have been fabricated, such as rods, fibers, spheres, ellipsoids, and ribbons. 10,[37][38][39] For CaCO 3 , it is not easy to prepare pure aragonite without any other polymorph; however, BaCO 3 and SrCO 3 have only one polymorph, named witherite and strontianite, respectively. 10 Interestingly, both of them have the aragonitic crystal structure.…”

Controlled Synthesis of BaCO3 Microstructures Using Various Natural Gums - A Biomimetic Approach

“…In degenerate planar bending [51] . (Figure 5a), 1440.51 cm -1 (Figure 5b), 1438.59 cm -1 (Figure 5c), 1452.05 cm -1 (Figure 5d) and 1452.84 cm -1 (Figure 5e) In our previous study on as-synthesized BaCO 3 nanocrystallites using natural gum acacia [52] , it was observed that the evolution of gas in the first two steps…”