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化学学报
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化学学报 ›› 2003, Vol. 61 ›› Issue (1): 126-128. 上一篇    下一篇

研究论文

特殊形貌SrCO3粒子的简易合成

齐利民;席凯;马季铭   

  1. 北京大学化学学院.北京(100871)
  • 发布日期:2003-01-15

Facile Synthesis of SrCO_3 Particles with Unusual Morphologies

Qi Limin;Xi Kai;Ma Jiming   

  1. College of Chemistry, Peking University State Key Laboratory for Structural Chemistry of Unstable and Stable Species.Beijing(100871)
  • Published:2003-01-15

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449

被引次数

67 | 7

在纯水介质中通过简单调节SrCO3浓度合成了均一的橄榄状SrCO3粒子和由针状 SrCO3粒子向两端辐射而成的束状聚集体。聚甲基丙烯酸钠（PMAA）的存在有着使 SrCO3粒子形貌由束状聚集体逐渐变得两端钝化且膨胀的趋势，在适当条件下可得 到较为均一的花生状、球状和树枝状SrCO3粒子。

关键词: 仿生, 合成, 表面形貌学, 碳酸锶, 粒子

The crystallization of SrCO_3 particles from aqueous solutions in the absence and presence of a polyanionic additive has been investigated. Olive-like SrCO_3 particles and bundle-like aggregates consisting of SrCO_3 needles aligned radially toward both ends are synthesized in aqueous solutions by simply varying the SrCO_3 concentration. Both ends of the bundle-like aggregates of SrCO_3 needles tend to become rounded and extended in the presence of poly- (methacrylic acid) (PMAA); accordingly, uniform peanut-like, spherical and dendritic SrCO_3 particles can be prepared in suitable conditions, respectively.

Key words: BIONICS, SYNTHESIS, SURFACE TOPOGRAPHY, STRONTIUM CARBONATE, PARTICLE

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