Morphology Control of SrCO_3 Crystals using Complexons as Modifiers in the Ethanol-water mixtures

• 作 者: 张明轩 霍冀川 于永生 崔彩萍 雷永林
• 机 构: Institute of Applied Chemistry,Southwest University of Science and Technology,College of Chemistry a
• 出 处: 结构化学
• 发表日期: 2008年10期
• 关键词: spherical mixtures hexagonal overlapping matching carboxyl modifier adding bundl

Using SrCl2·6H2O and Na2CO3 as the main raw materials and adding different complexons as modifiers with simple co-precipitation method=SrCO3 crystals with distinct mor-phologies like spherical=bundle-like=overlapping plate-like=hexagonal star-like=dumbbell-like=etc.can be synthesized in the ethanol-water mixtures.The samples were characterized by X-ray diffraction(XRD)=scanning electron microscopy(SEM) and Fourier transform infrared spectrograph(FT-IR).The interrelated effect mechanism is presented in the end.Results show that the modifier carboxyl groups play a significant role in controlling the SrCO3 crystal morphologies=which can alter the crystal growth unit(Sr2+) supply mode and induce the crystal formation with the morphologies matching their spatial configurations.

Using SrCl2 · 6H2O and Na2CO3 as the main raw materials and adding different complexons as modifiers with simple co-precipitation method = SrCO3 crystals with distinct mor-phologies like spherical = bundle-like = overlapping plate-like = hexagonal star-like = dumbbell- like = etc. can be synthesized in the ethanol-water mixtures. These samples were characterized by X-ray diffraction (XRD) = scanning electron microscopy (SEM) and Fourier transform infrared spectrograph (FT-IR) in the end. Results show that the modifier carboxyl groups play a significant role in controlling the SrCO3 crystal morphologies = which can alter the crystal growth unit (Sr2 +) supply mode and induce the crystal formations with the morphologies matching their spatial configurations.