期刊
JOURNAL OF MEMBRANE SCIENCE
卷 632, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.memsci.2021.119352
关键词
Freezing assisted method; In situ growth; Nano-confined composite membrane; ZIF-8 membrane; Dye removal from water
资金
- National Natural Science Foundation of China [21776003]
- Beijing Municipal Natural Science Foundation
- Beijing Natural Science Foundation Committee
- Beijing Education Committee [KZ201910005001]
- Importation and Development of HighCaliber Talents Project of Beijing Municipal Institutions [CITTCD201904014]
In this study, a freezing assisted in situ growth strategy was used to successfully prepare a nanoconfined ZIF-8 composite membrane on a ceramic substrate, showing excellent separation performance and stability. This method may provide a new avenue for preparing MOF membranes in other fields.
In recent years, metal-organic framework (MOF) membranes have attracted much attention in many fields. However, the fabrication of MOF membrane with defect-free ultrathin separation layer on the surface of a substrate is very difficult. In this study, freezing assisted in situ growth strategy was used to prepare a nanoconfined ZIF-8 composite membrane on a porous ceramic substrate. The frozen alumina substrate with the metal ion ice crystal inside the pores was immersed in ligand solution for the growth of ZIF-8 crystals. Then, ZIF8 nanoparticles were grown inside the pores rather than on the surface of the substrate. The morphology and structure of the ZIF-8 particles and nano-confined composite membranes were characterized by XRD, SEM, FTIR, EDS, and nanoindentation. The obtained nano-confined ZIF-8 composite membrane exhibited excellent separation performance and stability for removing dyes from water. The influence of preparation conditions on membrane structure and property was also investigated. The freezing assisted method may provide an avenue for preparing MOF membranes in other fields.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据