Facile and controllable synthesis of BaCO3 crystals superstructures using a CO2-storage material

• 作者: Bo Guo Chang Liu Fei Zhang Feng Sha Jianbin Zhang Jing Zhao Liang Ma Xianshu Qiao
• 来源期刊: 绿色能源与环境：英文版
• 学科: 工学
• 年，卷（期）: 2017,（4）
• 页码范围: 401-411
• 页数: 11页
• 分类号: TQ132.35

摘要

We here report a new CO2 capture and storage method that converts CO2 into a novel alkyl carbonate salt, denoted as CO2 SM, by a system consisting of equimolar 1,4-butanediol（BDO） and 1,2-ethylenediamine（EDA）. This novel CO2 SM was then used to prepare BaCO3 crystals through a simple and fast hydrothermal synthesis under mild conditions. The CO2 SM was both the source of CO2 and the modifier to regulate the nucleation and growth of BaCO3 crystals. The morphology of the BaCO3 crystals could be tuned from rod to shuttle by adjusting the key influencing factors, including CO2 SM concentration, mineralization temperature, and mineralization time. A possible mechanism for the synthesis of BaCO3 crystals from the CO2 SM was also presented. After the BaCO3 crystals were isolated, the filtrate of the hydrothermal reaction could be recycled to again absorb CO2 and prepare BaCO3 crystals of the same polymorph. This novel approach appears promising for preparing well-formed metal carbonates.