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Hybrid membranes for wastewater treatment based on polymer-coated barium titanate nanoparticles.
J Colloid Interface Sci
December 2024
Dpto. Ciencia de los Materiales, I. M. y Q. I., IMEYMAT, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, s/n, 11510 Puerto Real (Cádiz), Spain. Electronic address:
In this work we present a series of hybrid membranes with piezocatalytic properties for wastewater treatment. For this, four types of barium titanate nanoparticles (BTO NPs) with different coatings were synthesized. These NPs were embedded in a polystyrene (PS) matrix to fabricate hybrid, porous membranes using the breath figures (BF) technique.
View Article and Find Full Text PDFA ruptured craniocervical junction perimedullary arteriovenous fistula successfully treated through flow diversion: A case report.
Surg Neurol Int
October 2024
Neuroradiologische Klinik, Klinikum Stuttgart, Stuttgart, Germany.
Background: Spinal arteriovenous fistulae (AVF) located at the craniocervical junction (CCJ) are rare and usually present with hemorrhage. Bleeding is usually attributed to arterial feeders arising from the anterior spinal artery (ASA) and aneurysms located on such feeders. Perimedullary AVFs are typically found on the ventral surface of the spinal cord, which makes them difficult to treat through traditional microsurgical methods.
View Article and Find Full Text PDFFlow diversion with hydrophilic polymer coating with prasugrel as single antiplatelet therapy in the treatment of acutely ruptured intracranial aneurysms: a multicenter case series, complication and occlusion rates.
J Neurointerv Surg
August 2024
Neuroradiology, Klinikum Stuttgart Katharinenhospital, Stuttgart, Germany.
Background: This study reports a multicenter experience of using hydrophilic polymer-coated (HPC) flow diverters with prasugrel single antiplatelet therapy to treat ruptured aneurysms with subarachnoid hemorrhage (SAH).
Methods: Patients treated for intracranial aneurysms within 30 days after SAH with a p64/p48 MW HPC flow diverter were prospectively identified. Clinical presentation and outcomes, periprocedural and postprocedural complications, and degree of occlusion at follow-up were evaluated.
Polypeptoid Monomer Sequence and Chemical Composition as Independent Controls of Interfacial Tension and Elasticity at Air/Fluid Interfaces.
Langmuir
July 2024
Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States.
We use sequence-specific polypeptoids to characterize the impact of the monomer sequence on the adsorption of surface-active polymers at fluid/fluid interfaces. Sets of 36 repeat unit polypeptoids with identical chemical composition, but different sequences of hydrophobic moieties along the oligomer chain (taper, inverse taper, blocky, and evenly distributed), are designed and characterized at air/water interfaces. Polypeptoids are driven to the interfaces by decreasing the solvent quality of the aqueous solution.
View Article and Find Full Text PDFAmphiphilic Polymer Electrolyte Blocking Lattice Oxygen Evolution from High-Voltage Nickel-rich Cathodes for Ultra-Thermal Stabile Batteries.
Angew Chem Int Ed Engl
September 2024
State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, China.
Ni-rich cathodes have been intensively adopted in Li-ion batteries to pursuit high energy density, which still suffering irreversible degradation at high voltage. Some unstable lattice O species in Ni-rich cathodes would be oxidized to singlet oxygen O and released at high volt, which lead to irreversible phase transfer from the layered rhombohedral (R) phase to a spinel-like (S) phase. To overcome the issue, the amphiphilic copolymers (UMA-F) electrolyte were prepared by linking hydrophobic C-F side chains with hydrophilic subunits, which could self-assemble on Ni-rich cathode surface and convert to stable cathode-electrolyte interphase layer.
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