Surfactant-free and Size-controllable Synthesis of Monodispersed ZIF-8 by Scalable Reaction Control
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초록
내용
Metal-organic framework (MOF) is one of the coordinated polymers by metal ion and organic ligand. Among many kinds of MOFs, the Zn-based zeolitic imidazolate framework, ZIF-8, has been widely used in various applications. The size and monodispersity are very important in application because of effective utilization of nanopores and diffusion. Thus, many studies have been conducted using surfactants and organic solvents to control the particle size and uniformity of ZIF-8. However, the use of such surfactants and organic solvents is costly and may cause environmental pollution. In this study, the water-based large-scale synthesis of monodispersed ZIF-8 with a finely tuned size is first reported without any surfactants. The average size and size distribution of the ZIF-8 nanoparticles are controlled by adjusting several synthetic factors (particle sizes from 100 nm –1 μm) and are also applied on a large scale. In addition, we performed the environmental application by the resulting monodisperse ZIF-8 with different size to shows the effect of size and pore utilization.