甘氨酸修饰的Co-MOF蒸发膜,以提高水的运输
Ting Yang1, Yao Liang1, Guijuan Liu1
1State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.
Langmuir : the ACS journal of surfaces and colloids
|May 30, 2024
概括
研究人员开发了一种新的混合膜,使用基于的金属有机框架 (Co-MOFs) 和酸来有效地脱水乙醇. 这种膜显著增强了水的运输,改善了有机溶剂干燥的蒸发性能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 分离科学 分离科学
背景情况:
- 基于的金属有机框架 (Co-MOFs) 由于稳定性和水友性,对蒸发有希望.
- 二维分层Co-MOF面临着诸如纳米材料堆叠和有限的层间距等挑战.
研究的目的:
- 开发一种新型的混合膜,用于高效的有机溶剂脱水.
- 解决纳米材料堆叠问题,并优化Co-MOF膜中的层间距.
- 为了提高乙醇/水分离的蒸发性能.
主要方法:
- 使用2D Co-MOFs,氨基甘氨酸 (Gly) 作为交叉链接剂,酸 (SA) 作为有机填充剂,以及多烯 (PAN) 支物制造混合膜.
- 使用"混沙"结构来改善膜形态和特性.
- 研究Gly对层间间距和纳米材料分散的影响.
主要成果:
- 这种Gly-Co-MOF-SA/PAN混合膜表现出"混沙"的状密度形态.
- 氨基甘氨酸 (Gly) 有效地防止了纳米材料堆叠,并调整了层间距离.
- 混合膜实现了 1902 g m-2 h-1 的酒精/水 (9:1) 分离的总流量,比纯SA膜增加了 67%.
- 观察到增强的膜水友性和快速的水运输通道.
结论:
- 开发的Gly-Co-MOF-SA/PAN混合膜在乙醇脱水方面表现出色.
- "混沙"结构和Gly交联是改善膜特性和分离效率的关键.
- 这种膜技术具有脱水各种有机溶剂的潜力.
相关概念视频
Aquaporins
4.8K
Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
4.8K
Ion-Exchange Chromatography
446
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
446
Chemiosmosis
98.1K
Oxidative phosphorylation is a highly efficient process that generates large amounts of adenosine triphosphate (ATP), the basic unit of energy that drives many cellular processes. Oxidative phosphorylation involves two processes— the electron transport chain and chemiosmosis.
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
98.1K
Membrane Fluidity
152.0K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
152.0K
Dialysis
638
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
638
Protein Glycosylation
6.9K
Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
Glycosylation occurs in...
6.9K


