陶瓷基金属有机框架MOF-801膜的制备及其性能 |
作者:付 茂,赵志育,赵赛,董应超 |
单位: 工业生态与环境工程教育部重点实验室 大连理工大学 环境学院,大连 116024 |
关键词: 水处理;陶瓷膜;MOF-801膜,正渗透,水通量 |
DOI号: |
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出版年,卷(期):页码: 2023,43(1):21-26 |
摘要: |
正渗透膜在分离领域方面展示出独特优势,发展高稳定的新型正渗透膜具有重要意义。提出了纳米晶种原位播种结合二次生长的制膜策略,制备了共生良好、高稳定的陶瓷基金属有机框架MOF-801纳米孔膜,采用扫描电镜(SEM),X射线衍射(XRD)和红外光谱对膜的形貌和结构进行分析表征,初步考察了以去离子水为进料液,1 mol/L NaCl溶液为汲取液条件下膜的正渗透性能。结果表明,在正渗透模式下,陶瓷基MOF-801膜不仅表现出高的水通量(13.9 L/(m2·h),而且具有较低的比盐通量(0.61 g/L);在连续运行过程中,MOF-801膜渗透性能保持稳定。 |
Forward osmosis (FO) membranes have unique merits enabling separation application, and it is of great significance to develop highly stable novel forward osmosis membrane. Herein, we propose a new membrane fabrication strategy by combining in situ nano-seeding with secondary growth to fabricate well-intergrown highly stable ceramic-based metal organic framework MOF-801 nano-porous membrane. Then forward osmosis performance was preliminarily investigated. The as-prepared ceramic-based MOF-801 membrane showed not only high water flux (13.9 L/m2·h), but also low specific salt flux (0.61 g/L) in forward osmosis mode. Moreover, MOF-801 membrane exhibited stable flux during continuous operation. This work proposes a new protocol to fabricate inorganic forward osmosis membranes with promising application performance. |
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作者简介: |
付 茂(1988-),男,贵州省正安人,博士生,研究方向:水污染控制;膜法水处理技术,E-mail:fumao920104@163.com |
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