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Synthesis of strontium carbonate rods and hierarchical branches in the presence of two organic additives
Author(s) -
Chen Long,
Chen Guoping,
Wang Xixi,
Fang Hongxia,
Wu Chengxiu,
Xing Tiantian
Publication year - 2010
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.200900425
Subject(s) - strontium carbonate , hexamethylenetetramine , crystallite , crystallization , chemistry , aqueous solution , scanning electron microscope , transmission electron microscopy , selected area diffraction , fourier transform infrared spectroscopy , powder diffraction , inorganic chemistry , strontium , mineralogy , crystallography , chemical engineering , materials science , nanotechnology , organic chemistry , engineering , composite material
In this paper, strontium carbonate (SrCO 3 ) crystals have been synthesized in the presence of two organic additives, including sodium citrate and hexamethylenetetramine (HMT). Scanning electron microscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy, X‐ray powder diffractometry and selected area electron diffraction (SAED) were used to characterize the products. The results indicate that SrCO 3 rods with the ratio of length to diameter about 20 are obtained in the aqueous solution containing sodium citrate. While polycrystalline SrCO 3 hierarchical branches with about 10 μm length are produced by using HMT.The possible formation mechanism of the SrCO 3 crystals obtained in above two systems is discussed, which can be interpreted by particle‐aggregation based non‐classical crystallization laws. Sodium citrate and HMT may direct the formation of SrCO 3 rod‐like or branch‐like structures by adsorbing onto certain facets of SrCO 3 crystals. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)