نتایج جستجو برای: oxygen ion transport membranes
تعداد نتایج: 727624 فیلتر نتایج به سال:
Carborane-capped gold nanoparticles (Au/carborane NPs, 2-3 nm) can act as artificial ion transporters across biological membranes. The particles themselves are large hydrophobic anions that have the ability to disperse in aqueous media and to partition over both sides of a phospholipid bilayer membrane. Their presence therefore causes a membrane potential that is determined by the relative conc...
Carbon nanotubes (CNTs) can be used to create unique fluidic systems for studying ion transport in nanochannels due to their well-defined geometry, atomically smooth and chemically inert surface, and similarity to transmembrane protein pores. Here, we report the reversible molecular gating of ion transport across DNA-functionalized CNT membranes. The diffusive transport rates of ferricyanide io...
In this work, the water crossover in CO2 electrolysis was systematically analyzed with hydrated ions transferring through ion-selective membranes as charge carriers three-compartment devices. We demonstrate that leads to a variation electrolyte volume, which plays an important role evaluation of catalytic selectivity liquid products. Without considering crossover, products could be overestimate...
A summary Is presented of theoretlcal studles almlng at a better understandlng of the coupling propertles of polypeptlde a-helical segments. and of their aggregation into bundles of various sizes capable of encloslng channels apt to transport Ions through biological membranes. The molecular aspects are stressed. INTRODUCTION Blologlcal membranes surround the cells and thelr varlous compartments...
R. D. Noble, a research profissor in chemical engineering at the Univ. of Colorado, specializes in the use of reversible chemical reactions in chemical gas and liquid separation processes, most notably the use of ion-exchange membranes as supports for complexing agents and the modeling and analysis of various facilitated transport systems. Refore joining the Univ, of Colorado, he served as an a...
Composite ceramic membranes based on the ionic conducting Tm-stabilized δ-Bi 2 O 3 (BTM) and electronic (La 0.8 Sr 0.2 ) 0.99 MnO 3-δ (LSM) exhibit among highest oxygen flux values reported for Bi -based membranes. Here, we use pulse-response isotope exchange (PIE) measurements to elaborate limiting factors permeation in BTM - 40-70 vol% LSM composites. Once both phases percolate, between 30 50...
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