Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 128837 - 128837
Published: July 17, 2024
Language: Английский
Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)
Published: Sept. 7, 2023
Abstract Current polyamide lithium extraction nanofiltration membranes are susceptible to chlorine degradation and/or low permeance, two problems that hard reconcile. Here we simultaneously circumvented these by designing a quaternized-spiro piperazine monomer and translating its beneficial properties into large-area (1 × 2 m ) via interfacial polymerization with trimesoyl chloride. The quaternary ammonium spiral conformation of the confer more positive charge free volume membrane, leading one highest permeance (~22 L −2 h −1 bar compared state-of-the-art Mg 2+ /Li + membranes. Meanwhile, membrane structures resistant as amine–acyl bonding contains no sensitive N-H group. Thus high performance is stable versus 400-h immersion in sodium hypochlorite, while control degraded readily. Molecular simulations show resistance, which were reproducible at module level, arise from secondary amine monomer.
Language: Английский
Citations
119
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)
Published: Oct. 31, 2023
Abstract Polyester nanofiltration membranes highlight beneficial chlorine resistance, but their loose structures and negative charge result in poor cations retention precluding advanced use separation. This work designs a new monomer (TET) containing “hydroxyl‐ammonium” entities that confer dense positive to polyester membranes. The TET undergoes efficient interfacial polymerization with the trimesoyl chloride (TMC) monomer, resultant TET‐TMC feature one of lowest molecular weight cut‐offs (389 Da) highest zeta potential (4 mv, pH: 7) among all MgCl 2 rejection membrane is 95.5%, significantly higher than state‐of‐the‐art (<50%). Li + /Mg 2+ separation performance on par cutting‐edge polyamide membranes, while additionally, stable against NaClO though readily degrade. Thus first for
Language: Английский
Citations
84
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(48)
Published: Oct. 5, 2023
Abstract Efficient Mg 2+ /Li + separation is crucial to combating the lithium shortage worldwide, yet current nanofiltration membranes suffer from low efficacy and/or poor scalability, because desirable properties of are entangled and there a trade‐off. This work reports “tagged‐modification” approach tackle challenge. A mixture 3‐bromo‐trimethylpropan‐1‐aminium bromide (E 1 ) 3‐aminopropyltrimethylazanium 2 was designed modify polyethylenimine – trimesoyl chloride (PEI‐TMC) membranes. E reacted with PEI TMC, respectively, thus, membrane (hydrophilicity, pore sizes, charge) were untangled intensified simultaneously. The permeance (34.3 L m −2 h −1 bar selectivity (23.2) modified about 4 times higher than pristine membrane, they remain stable in 30‐days test. highest among all analogous tagged‐modification method enables preparation large‐area modules that produce high‐purity carbonate (Li CO 3 simulated brine.
Language: Английский
Citations
64
Desalination, Journal Year: 2024, Volume and Issue: 577, P. 117379 - 117379
Published: Jan. 28, 2024
Language: Английский
Citations
56
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(51)
Published: Aug. 30, 2023
Abstract High performance polyamide nanofiltration membranes play important roles in Mg 2+ /Li + separation and Li extraction, but they are prepared via multiple time‐/labor demanding steps. Both the scalability of these engineering membrane modules remain an elusive challenge. Here design a Gemini‐electrolyte monomer (GEM) featuring bidentate amine groups, quaternary ammonia, endocyclic contorted conformation is reported. The monomer's low interfacial diffusivity balanced by high condensational reactivity during its polymerization with trimesoyl chloride (TMC), leading to straightforward formation defect‐free, ≈14 nm thick membranes. shows highest permeance (≈19.2 L m −2 h −1 bar ) among without post‐modification, combined good selectivity (≈15.4) stability. validity GEM verified control monomers. Large‐area (1 × 2 GEM‐TMC spiral‐wound (effective area: 0.5 prepared, both which show reproducible performance.
Language: Английский
Citations
54
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160176 - 160176
Published: Feb. 1, 2025
Language: Английский
Citations
3
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 20, 2024
Abstract A key challenge in efficient molecular separation is fabricating large‐scale, highly selective polymeric membranes with precise pore control at the scale. Herein, a new contorted monomer 6,6′‐dihydroxy‐2,2′‐biphenyldiamine (DHBIPDA) introduced as building block to generate cross‐linked, ultra‐thin microporous nanofilms (sub‐10 nm) via interfacial polymerization, enabling rapid, and nanofiltration. Using diacyl chloride (TPC) cross‐linker instead of trimesoyl (TMC) significantly reduces sizes within achieves narrower distribution due semi‐crystalline structure. The film structures are confirmed using comprehensive characterization techniques including wide‐angle X‐ray scattering (WAXS), diffraction (XRD), positron annihilation lifetime spectroscopy (PALS), CO 2 adsorption analysis, molecular‐scale simulation. DHBIPDA/TPC DHBIPDA/TMC achieve methanol permeance values up 16.4 15.1 LMH bar −1 coupled weight cutoffs (MWCOs) low 283 306 Da, respectively. membrane demonstrates both higher selectivity compared its relatively disordered counterpart DHBIPDA/TMC, consistent data. DHBIPDA‐derived efficiently separates dye mixtures similar weights enables effective recycling organometallic homogeneous catalysts, suggesting potential for industrial applications.
Language: Английский
Citations
13
Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 698, P. 122620 - 122620
Published: March 2, 2024
Language: Английский
Citations
12
Science Advances, Journal Year: 2024, Volume and Issue: 10(33)
Published: Aug. 14, 2024
Fine-tuning microporosity in polymers with a scalable method has great potential for energy-efficient molecular separations. Here, we report dual-phase engineering approach to prepare microporous polymer nanofilms through interfacial polymerization. By integrating two micropore-generating units such as water-soluble Tröger's base diamine (TBD) and contorted spirobifluorene (SBF) motif, the resultant TBD-SBF polyamide shows an unprecedentedly high surface area. An ultrathin membrane (~20 nm) exhibits up 220 times improved solvent permeance moderate weight cutoff (~640 g mol
Language: Английский
Citations
11
Materials, Journal Year: 2024, Volume and Issue: 17(1), P. 271 - 271
Published: Jan. 4, 2024
The next step in nanotechnology is to establish a methodology assemble new functional materials based on the knowledge of nanotechnology. This task undertaken by nanoarchitectonics. In nanoarchitectonics, we architect material systems from nanounits such as atoms, molecules, and nanomaterials. terms hierarchy structure harmonization function, created nanoarchitectonics has similar characteristics organization biosystems. Looking at actual biofunctional systems, dynamic properties interfacial environments are key. other words, interfaces important for production bio-like highly systems. this review paper, will be discussed, looking recent typical examples. particular, basic topics “molecular manipulation, arrangement, assembly” “material production” discussed first two sections. Then, following section, “fullerene assembly: zero-dimensional unit advanced materials”, discuss how various structures can very nanounit, fullerene. above examples demonstrate versatile possibilities architectonics interfaces. last these tendencies summarized, future directions discussed.
Language: Английский
Citations
10