Going from Inner‐Skinned to Outer‐Skinned Polyelectrolyte Multilayer Based Hollow Fiber Nanofiltration Membranes DOI Creative Commons
Tjerk R. Watt, K. van Dijk, Esra te Brinke

и другие.

Advanced Materials Technologies, Год журнала: 2024, Номер unknown

Опубликована: Дек. 27, 2024

Abstract Recently, hollow fiber polyelectrolyte multilayer membranes (PEMMs) have shown great potential for removing organic micropollutants from wastewater streams. Currently, these PEMMs are made with the selective layer on inside of fiber. However, to reduce physical footprint PEMM modules, it would be beneficial outside. This will lead an increased surface area per and enable use smaller mechanically stronger fibers, which further increases membrane module. To prove that concept outer‐skinned is feasible, dry‐jet wet‐spinning process used fabricate charged supports, they coated through layer‐by‐layer self‐assembly form a PEMM. Scanning electron microscopy images fibers confirm existence asymmetric structure outer skin, while fluorescence imaging confirms located outside Filtration experiments showed exhibited nanofiltration properties similar conventional inner‐skinned PEMMs. Overall, show 3.8x increase in active volume ratio compared commercial PEMMs, clearly highlighting benefits terms footprint.

Язык: Английский

Kinetic aspects of salinity stability of layer-by-layer polyelectrolyte nanofiltration membranes: Impact of soaking time, types of ions and crosslinking DOI Creative Commons
Jiarui Chen, Rong‐Rong He, Hao Chen

и другие.

Journal of Membrane Science, Год журнала: 2024, Номер 709, С. 123087 - 123087

Опубликована: Июль 14, 2024

Recent discovery of very high selectivity Layer-by-Layer (LBL) nanofiltration (NF) membranes for mono/bivalent ions has attracted significant attention, especially extraction lithium from salt lake brines. Besides the exceptionally selectivity, salinity stability in highly saline solutions (HSS) that often occurred during NF been largely neglected. Intuitively, because LBL are assembled a background solution, assembly disassembles environments. To verify above argument, we reported here comprehensive study on performance polystyrene sulfonate (PSS)/poly(diallyldimethylammonium chloride) (PDADMAC) and PSS/poly(allylamine) hydrochloride (PAH) HSS by short/long term immersion dynamic filtration. Greater binding strength (PSS/PAH)2.5 corresponded to better than (PSS/PDADMAC)2.5. Adsorption bridging divalent Mg2+ with PSS altered conformation narrowing pore size distribution. Compared static immersion, filtration accelerated loss PEs at cLiCl = 2 mol/L, but membrane was improved chemical crosslinking. This research highlighted kinetic aspects chemical-physical behavior polyelectrolyte complexes (PECs) HSS. The results offer valuable insights development ion separation resource recovery.

Язык: Английский

Процитировано

2
From Brush to Barrier: Fine-Tuning Donnan Exclusion in Polyelectrolyte Multilayer Membranes with Polymer Brushes DOI Creative Commons
Wendy A. Jonkers, Anna M. C. Maan,

Ruud Bonekamp

и другие.

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(16), С. 9806 - 9816

Опубликована: Авг. 10, 2024

Polyelectrolyte multilayer (PEM) membranes are widely used in nanofiltration applications. Selective PEM layers constructed by alternate adsorption of polycations and polyanions to a porous support membrane. A vital aspect this process is charge overcompensation, which facilitates the next polyelectrolyte layer. However, as result always have charged surface, contributes Donnan exclusion ions. High ion retentions can be undesirable some applications it complicates concentrate treatment requires remineralization permeate. Therefore, we propose using diblock copolymers (DBCs) terminating layer coating diminish exclusion. DBCs limit overcompensation preventing further through steric hindrance. Poly(2-(dimethylamino)ethyl methacrylate)-block-poly(ethylene glycol) (PDMAEMA-b-PEG) were model DBCs. The length PDMAEMA block was systematically changed study effect anchor on membrane properties. We demonstrate that indeed tune salt retention Donnan-dominated poly(diallyldimethylammonium chloride) (PDADMAC)/poly(sodium 4-styrenesulfonate) (PSS) membranes. For containing an 114 monomers, even nearly neutral surface could achieved. Importantly, tunability achieved without diminishing membrane's permeability or molecular weight cutoff. DBC does not affect dielectrically dominated poly(allyl amine) hydrochloride/PSS This confirms hypothesis specifically approach particularly promising when designing for with high scaling risk.

Язык: Английский

Процитировано

2
Cation-modulated permselectivity regulation of polyelectrolyte nanofiltration membranes for water purification DOI

Jianan Niu,

Tiange Yan,

Qiliang Xiong

и другие.

Separation and Purification Technology, Год журнала: 2024, Номер 355, С. 129656 - 129656

Опубликована: Сен. 11, 2024

Язык: Английский

Процитировано

2
Unraveling the Applicability of LbL Coatings for Drug Delivery in Dental Implant-Related Infection Treatment DOI Creative Commons
M.M. Pereira, Rodolfo Debone Piazza, Amanda Paino Sant’Ana

и другие.

ACS Biomaterials Science & Engineering, Год журнала: 2024, Номер 11(1), С. 13 - 32

Опубликована: Ноя. 30, 2024

Peri-implantitis is an inflammatory condition caused by bacterial biofilms adhered on dental implant surfaces that cause progressive tissue destruction from the host's response. The adverse effects of peri-implantitis progression can go beyond just losing implant. This highlights importance implementing strategies to stabilize disease in short term. Layer-by-layer (LbL) assembly a promising avenue field management due its applicability with variety substances, addition being easy, versatile, and flexible process for multilayer formation act directly affected site. In this Review, our objective offer comprehensive chemical biological insights into LbL system, clarifying specific application as antimicrobial coatings, concern physical site purpose. Additionally, we delve deeper concepts onset peri-implantitis, aiming elucidate precise indications employing system coating abutments treatment. Finally, correlate composition functionality while also addressing challenges posed uncontrolled environment oral cavity, which ultimately restricts clinical applicability.

Язык: Английский

Процитировано

1
Liquid-on-solid heterogeneous nucleation for a general synthesis of yolk–shell nanostructures DOI Creative Commons

Huiying Guo,

Huai Lin,

Zhouling Wu

и другие.

Chemical Communications, Год журнала: 2023, Номер 59(45), С. 6897 - 6900

Опубликована: Янв. 1, 2023

Liquid-on-solid heterogeneous nucleation on solid nanoparticle seeds was achieved.

Язык: Английский

Процитировано

2
Molecular recognition on the surface of concentrated hydrochloric acid: Hydration configuration-driven preferential recognition of Rh (III) anions with inner-coordinated water molecules DOI
Haitao Zhou,

Zhizhuo Yang,

Na Sui

и другие.

Journal of Molecular Liquids, Год журнала: 2024, Номер 409, С. 125393 - 125393

Опубликована: Июнь 29, 2024

Язык: Английский

Процитировано

0
Modified-liquid-liquid phase separation: A novel technique to synthesize 2-dimensional CuO nanosheets DOI Creative Commons

Abha Mahajan,

Ajay Piriya Vijaya Kumar Saroja, Sundara Ramaprabhu

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Авг. 9, 2024

Abstract The 2-dimensional materials are seeing an upsurge in research and various applications. In this work, the growth of cupric oxide (CuO) nanostructures different morphologies is reported by employing modified-liquid-liquid phase separation (m-LLPS) technique. Here, two binary phases copper sulphate-polyethylene glycol (PEG) i.e. C&P sodium hydroxide-PEG N&P used tandem reduction salt employed. Sheet-like agglomerated could be restrained into nice flattened disks merely modifying interaction time. X-ray diffraction (XRD) for structural information, UV-Visible spectroscopy optical bandgap estimation, micro-Raman vibrational levels investigation, Fourier Transform Infrared (FTIR) as fingerprint bond/ compound formation have been flat-disk CuO sample was detection glucose. Limit limit quantification were estimated found to 4 mM 13 mM, respectively. mechanism modified-LLPS method leading oriented from disoriented discussed. By taking example, a very simple concept has demonstrated prepare materials.

Язык: Английский

Процитировано

0
Going from Inner‐Skinned to Outer‐Skinned Polyelectrolyte Multilayer Based Hollow Fiber Nanofiltration Membranes DOI Creative Commons
Tjerk R. Watt, K. van Dijk, Esra te Brinke

и другие.

Advanced Materials Technologies, Год журнала: 2024, Номер unknown

Опубликована: Дек. 27, 2024

Abstract Recently, hollow fiber polyelectrolyte multilayer membranes (PEMMs) have shown great potential for removing organic micropollutants from wastewater streams. Currently, these PEMMs are made with the selective layer on inside of fiber. However, to reduce physical footprint PEMM modules, it would be beneficial outside. This will lead an increased surface area per and enable use smaller mechanically stronger fibers, which further increases membrane module. To prove that concept outer‐skinned is feasible, dry‐jet wet‐spinning process used fabricate charged supports, they coated through layer‐by‐layer self‐assembly form a PEMM. Scanning electron microscopy images fibers confirm existence asymmetric structure outer skin, while fluorescence imaging confirms located outside Filtration experiments showed exhibited nanofiltration properties similar conventional inner‐skinned PEMMs. Overall, show 3.8x increase in active volume ratio compared commercial PEMMs, clearly highlighting benefits terms footprint.

Язык: Английский

Процитировано

0