Journal Article10.1134/S1061933X20010056
Electrodiffusion Characteristics of Halloysite-Modified Bilayer Membranes
Anatoly Filippov,Natalia Kononenko,I. V. Falina,Ekaterina Titskaya,D. A. Petrova,D. A. Petrova +5 more
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TL;DR: In this paper, the authors studied the electrodiffusion characteristics of HNT-modified bilayer perfluorinated membranes and revealed the factors that have the strongest influence on the development of the asymmetry of their currentvoltage curves.
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Abstract: Diffusion permeability and electrical conductivity have been studied for bilayer perfluorinated MF-4SC membranes modified with halloysite nanotubes (HNTs) containing noble metal nanoparticles (NPs) deposited onto their surface. It has been found that the diffusion permeability of the bilayer membranes depends on their orientation with respect to an electrolyte flow: the diffusion flux is higher when the modified side of the membrane faces a flow. The study of the electrodiffusion characteristics of HNT-modified bilayer perfluorinated membranes has resulted in the factors being revealed that have the strongest influence on the development of the asymmetry of their current–voltage curves. It has been found that, to obtain a membrane with a fortiori asymmetric properties, it is necessary to synthesize a material the layers of which differ from each other in only one component—either HNTs or metal NPs. The efficiency of the modified membranes as polymer electrolytes for hydrogen-air fuel cells has been determined, and it has been shown that the modification with HNTs reduces the specific power of a fuel cell, while the presence of platinum NPs on a nanotube surface increases this parameter. The reason for the increase in the specific power is the catalytic activity of platinum NPs in the interaction between oxygen and hydrogen in the membrane bulk, which leads to the self-humidifying of the membrane and a decrease in its ohmic resistance.
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Citations
Fabrication of composite polymer electrolyte membrane using acidic metal-organic frameworks-functionalized halloysite nanotubes modified chitosan
Shujun Zhao,Yutong Yang,Fei Zhong,Wenjuan Niu,Yingshui Liu,Genwen Zheng,Hai Liu,Wang Jie,Zufeng Xiao +8 more
TL;DR: Wang et al. as discussed by the authors used a facile one-pot in situ growth method, and then employed as a multifuctional addtive into chitosan (CS) matrix to fabricate composite PEM.
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Electrochemical Properties and Selectivity of Bilayer Ion-Exchange Membranes in Ternary Solutions of Strong Electrolytes
Aslan Achoh,V.I. Zabolotsky,K. A. Lebedev,M. V. Sharafan,Andrey B. Yaroslavtsev +4 more
- 01 Jan 2021
TL;DR: In this article, the authors developed and verified a four-layer mathematical model with quasi-equilibrium boundary conditions for a diffusion layer (I)/modifying layer (II)/substrate membrane (III)/diffusion layer (IV) system in ternary solutions of electrolytes and obtained analytical expressions for calculations of the limiting current, effective transference numbers, and specific selectivity coefficients.
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Modelling of transport properties of perfluorinated one- and bilayer membranes modified by polyaniline decorated clay nanotubes
TL;DR: In this article, PANI-halloysite nanotubes are added to the perfluorinated matrix of a single and bilayer sulfocationite membrane to increase diffusion permeability and increase conductivity.
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Progress in design of halloysite nanotubes-polymer nanocomposite membranes and their applications
Lijuan Qin,Guanying Dong,Yi Nie,Rawil Fakhrullin,Bing Zhang,Yatao Zhang +5 more
TL;DR: Recent advancements in halloysite nanotubes-polymer nanocomposite membranes are reviewed, covering functionalization methods, membrane preparation, and applications in water treatment, gas treatment, energy conversion, and biomedicine, aiming to stimulate innovation and extend their uses.
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Composite Sulfonated Polyether-Ether Ketone Membranes with SBA-15 for Electrochemical Energy Systems.
A. Rico-Zavala,J L Pineda-Delgado,Alessandra Carbone,A. Saccà,Enza Passalacqua,M.P. Gurrola,A. Álvarez,S. Rivas,Janet Ledesma-García,Luis Gerardo Arriaga +9 more
TL;DR: Water Uptake, Ion Exchange Capacity (IEC), proton conductivity, methanol permeability and other physicochemical properties were evaluated and, in PEMFC tests, the S-PEEK membrane with a 10 wt.% SBA-15 loading showed the highest performance.
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References
Halloysite Clay Nanotubes for Loading and Sustained Release of Functional Compounds.
TL;DR: Halloysite nanotubes are a promising mesoporous media for catalytic nanoparticles that may be seeded on the tube surface or synthesized exclusively in the lumens, providing enhanced catalytic properties, especially at high temperatures.
890
Characterization of ion-exchange membrane materials: properties vs structure.
TL;DR: The theoretical approach is suggested, which makes it possible to model and characterize the electrochemical properties of heterogeneous membranes using several transport-structural parameters that are extracted from the experimental dependences of specific electroconductivity and diffusion permeability on concentration.
408
Silica Modified by Alcohol Polyoxyethylene Ether and Silane Coupling Agent Together to Achieve High Performance Rubber Composites Using the Latex Compounding Method
Junchi Zheng,Xin Ye,Xin Ye,Dongli Han,Suhe Zhao,Suhe Zhao,Xiaohui Wu,Youping Wu,Youping Wu,Dong Dong,Yiqing Wang,Yiqing Wang,Liqun Zhang,Liqun Zhang +13 more
TL;DR: Using a proper combination of AEO and K-MEPTS is a user-friendly approach for preparing silica/NR composites with excellent performance.
408
Intensive current transfer in membrane systems: Modelling, mechanisms and application in electrodialysis
Victor Nikonenko,Natalia Pismenskaya,E. I. Belova,Philippe Sistat,Patrice Huguet,Gérald Pourcelly,Christian Larchet +6 more
TL;DR: It is shown that the intensive current modes in electrodialysis are compatible with new trends in water treatment oriented towards Zero Liquid Discharge (ZLD) technologies.
390
An assembly of organic-inorganic composites using halloysite clay nanotubes
Giuseppe Lazzara,Giuseppe Cavallaro,Abhishek Panchal,Rawil Fakhrullin,Anna Stavitskaya,Vladimir A. Vinokurov,Yuri Lvov,Yuri Lvov +7 more
TL;DR: Halloysite is natural tubular clay suitable as a component of biocompatible nanosystems with specific functionalities as discussed by the authors, and the selective modification of halloysite inner/outer surfaces can be achieved by exploiting supramolecular and covalent interactions resulting in controlled colloidal stability adjusted to the solvent polarity.
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