摘要:
Described herein are facile, one-step initiated plasma enhanced chemical vapor deposition (iPECVD) methods of synthesizing hyper-thin (e.g., sub- 100 nm) and flexible metal organic covalent network (MOCN) layers. As an example, the MOCN may be made from zinc tetraphenylporphyrin (ZnTPP) building units. When deposited on a membrane support, the MOCN layers demonstrate gas separation exceeding the upper bounds for multiple gas pairs while reducing the flux as compared to the support alone.
摘要:
The disclosure provides for polymer membranes which comprise metal organic frameworks, methods of making therein, and methods of use thereof, including in gas separation.
摘要:
This invention relates to methods of purifying water using graphene oxide laminates which are formed from stacks of cross-linked individual graphene oxide flakes. The laminates also comprise graphene and/or at least one cross-linking agent. The invention also relates to the laminate membranes themselves.
摘要:
Membranes, methods of making the membranes, and methods of using the membranes are described herein. The membranes can comprise a gas permeable support layer, an inorganic layer disposed on the support, the inorganic layer comprising a plurality of discreet nanoparticles having an average particle size of less than 1 micron, and a selective polymer layer disposed on the inorganic layer, the selective polymer layer comprising a selective polymer having a CO 2 :N 2 selectivity of at least 10 at 57°C. In some embodiments, the membrane can be selectively permeable to an acidic gas. The membranes can be used, for example, to separate gaseous mixtures, such as flue gas.
摘要:
Provided herein are metal organic framework/polymer mixed-matrix hollow fiber membranes and metal organic framework/carbon molecular sieve mixed-matrix hollow fiber membranes. The materials have high MOF particle loading and are easily scalable. The MOF/polymer mixed-matrix hollow fibers are formed using a dry-jet/wet-quench fiber spinning technique and show C 3 H 6 /C 3 H 8 selectivity that is significantly enhanced over the pure polymer fiber and that is consistent with the selectivity of mixed-matrix dense films of the same MOF/polymer combination. The MOF/CMS mixed-matrix hollow fibers are formed by pyrolyzing the MOF/polymer mixed-matrix hollow fibers and show increased C 3 H 6 permeance and increased selectivity over the MOF/polymer mixed-matrix hollow fiber membranes.
摘要:
The present invention relates to a separation membrane having both antibiotic and hydrophilic properties for water treatment and a preparation method thereof. In the separation membrane of the present invention, since an organic compound (antimicrobial and/or hydrophilic compound) is chemically conjugated to non-metal inorganic nanoparticles or metal nanoparticles, the nanoparticles are not eluted from the separation membrane even when the separation membrane is used for water treatment for a long period of time, so that the separation membrane may continuously maintain antimicrobial properties and high water permeability, is safe to the human body even when used for the treatment of drinking water, such as water purification, and exhibits characteristics in which stain resistance is also significantly enhanced due to antimicrobial and hydrophilic properties, which have been continuously imparted. Furthermore, high mechanical strength is exhibited by a metal or inorganic nanofiller introduced.
摘要:
Disclosed are treated mixed matrix polymeric membranes comprising a plurality of metal -organic frameworks (MOFs) and a polymeric matrix, wherein the plurality of MOFs are attached to the polymeric matrix through covalent or hydrogen bonds or Van der Waals interaction. The membranes can be treated with plasma, electromagnetic radiation, or thermal energy or any combination thereof
摘要:
The present invention relates to methods for fabrication or modification of polymer membranes for water treatment utilizing ink-jet printing. The methods of the invention provide substantial advantages over the current state of the art including, inter alia , accurately delivering precise amounts of liquids to surfaces; quickly changing coating parameters; quickly controlling and changing coating compositions; and tailor- making membranes according to customer needs.