Water-based synthesis of zeolitic imidazolate framework-8 for CO2 capture

作者：Shi, Zhuo; Yu, Yinghao^*; Fu, Chao; Wang, Lefu; Li, Xuehui

来源：RSC Advances, 2017, 7(46): 29227-29232.

DOI：10.1039/c7ra04875k

• ROOM-TEMPERATURE SYNTHESIS
• ZIF-8 NANOCRYSTALS
• CARBON-DIOXIDE
• ADSORPTION
• METAL
• ENHANCEMENT
• MORPHOLOGY
• SINGLE
• SIZE

This paper studies the impacts of five key synthesis parameters of zeolitic imidazolate framework-8 (ZIF-8) in an aqueous solution, namely zinc resource, pH value, temperature, reaction time, and the concentration of water in the ligand (H2O/Hmim). It was found that the crystallization of ZIF-8 samples is strongly impacted by these synthesis parameters. ZIF-8 synthesized at a temperature of 85 degrees C, reaction time of 5 min, and pH value of 11.4 had a large special surface area and pore volume, and thus had a high CO2 adsorption capacity of 3.04 mmol g(-1). The CO2 capture capacity remained constant after eleven consecutive adsorption-desorption experiments. Further applications of the hydrothermal synthesis method are promising considering the remarkable CO2 adsorption capacity and cyclic regeneration ability.

• 出版日期2017
• 单位华南理工大学