Morphology Control in the Synthesis of CaCO3 Microspheres with a Novel CO2-Storage Material

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• 作者：Tianxiang Zhao ; Bo Guo ; Fei Zhang ; Feng Sha ; Qiang Li ; Jianbin Zhang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：July 29, 2015
• 年：2015
• 卷：7
• 期：29
• 页码：15918-15927
• 全文大小：727K
• ISSN：1944-8252

文摘

A green and template-free method was applied to control the morphology of CaCO₃ microspheres with a layered nanostructure surface and pure crystalline phase of vaterite via the hydrothermal reaction between Ca(OH)₂ saturated limpid solution and a novel CO₂-storage material (CO₂SM). Morphologies of the as-prepared CaCO₃ crystals could be tuned with CO₂SM concentration, reaction temperature, or crystallization time. After the precipitation of CaCO₃ crystals, the filtered solution could not only be used to absorb CO₂ but also to produce CaCO₃ microspheres repeatedly with the addition of Ca(OH)₂ solution. Furthermore, an aggregation and self-assembly mechanism for the formation CaCO₃ microspheres had been proposed. As a result, this novel synthesis strategy of CaCO₃ microspheres with CO₂SM again emphasized that was possible to synthesize inorganic/organic hybrid materials with exquisite morphology and offered an alternative way for comprehensive utilization of CO₂.