期刊
JOURNAL OF MEMBRANE SCIENCE
卷 572, 期 -, 页码 20-27出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2018.10.080
关键词
ZIF-300 membrane; Water separation; Heavy metal ion; Positron annihilation spectroscopy
资金
- National Natural Science Foundation of China [21490585, 21476107, 21776125, 51861135203]
- Innovative Research Team Program by the Ministry of Education of China [IRT17R54]
- Topnotch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
Membrane technology is an energy-efficient approach for purification of wastewater. In this work, for the first time, a novel pure zeolite imidazolate framework-300 (ZIF-300) MOF membrane was fabricated and applied for removing heavy metal ions from wastewater. The fine structure of ZIF-300 layer was characterized by positron annihilation spectroscopy technique. Cross-flow and long-term operation test was also carried out to investigate the membrane stability. The obtained ZIF-300 membrane exhibited a high and stable performance with the water permeance of 39.2 L/m(2) h bar and rejection rate of 99.21% for CuSO4. This high separation performance combined the extraordinary stability demonstrated that the as-prepared pure ZIF-300 MOF membrane could be a potential candidate for the water treatment.
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