Results 21 to 30 of about 6,021 (207)

Utilization of Water-Insoluble Carbon Nitride-Phosphotungstic Acid Hybrids in Composite Proton Exchange Membranes [PDF]

open access: yesMembranes
Phosphotungstic acid (HPW) can retain water in proton exchange membranes to increase proton conductivity; however, its water-soluble nature limits further application.
Xiancan Yuan   +7 more
doaj   +2 more sources

Enhanced Conductivity of Composite Membranes Based on Sulfonated Poly(Ether Ether Ketone) (SPEEK) with Zeolitic Imidazolate Frameworks (ZIFs) [PDF]

open access: yesNanomaterials, 2018
The zeolitic imidazolate frameworks (ZIFs) ZIF-8, ZIF-67, and a Zn/Co bimetallic mixture (ZMix) were synthesized and used as fillers in the preparation of composite sulfonated poly(ether ether ketone) (SPEEK) membranes.
Arturo Barjola   +4 more
doaj   +6 more sources

Sulfonation Treatment of Polyether-Ether-Ketone for Dental Implant Uses

open access: yesApplied Sciences
There has been a recent uptake in the use of polyether-ether-ketone (PEEK), which is an organic thermoplastic polymer, in the manufacturing of various medical devices, implants, and equipment.
Hussein Hamid, Ihab Safi, Falah Hussein
doaj   +2 more sources

Proton Conducting Electrospun Sulfonated Polyether Ether Ketone-Graphene Oxide Composite Membranes

open access: yesRSC Advances, 2017
A series of novel composite membranes, based on sulfonated poly(ether ketone) (SPEEK) with a graphene oxide (GO) layer, were prepared. One contained a GO layer sandwiched between the SPEEK–polyvinyl alcohol (PVA) matrix (SPEEK/PVA@GO), and another ...
J. L. Reyes-Rodríguez   +6 more
semanticscholar   +5 more sources

Recent Progresses and Challenges to Determine Properties of Sulfonated Polyether Ether Ketone Based Electrolytes for Direct Methanol Fuel Cell Applications

open access: yesChemElectroChem
This review focuses on fillers, modifications, and methods used in the preparation and development of sulfonated poly(ether ether ketone) (sPEEK) membranes, specifically for direct methanol fuel cell (DMFC) applications as proton exchange membranes in ...
Murat Tamer   +2 more
doaj   +2 more sources

Sulfonated Poly(ether ether ketone) and Organically Modified Montmorillonite Nanocomposite Membranes for Direct Methanol Fuel Cell [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2022
Hypothesis: The modification of aromatic polymers, such as poly(ether ether ketone) (PEEK), by sulfonation modification, can result in fabricating polyelectrolyte membranes (PEMs) as the alternatives to Nafion for direct methanol fuel cell (DMFC ...
Mahdi Tohidian   +5 more
doaj   +1 more source

Spectroscopy and Cyclic Voltammetry Properties of SPEEK/CuO Nanocomposite at Screen-Printed Gold Electrodes

open access: yesNanomaterials, 2022
A successful electrochemical study of copper oxide nanoparticles (CuO NPs), sulfonated poly (ether ether ketone) polymer (SPEEK), and sulfonated polyether ether ketone-copper oxide (SPEEK/CuO) nanocomposite on bare gold electrodes was conducted.
Omolola E. Fayemi   +3 more
doaj   +1 more source

On the Performance of a Ready-to-Use Electrospun Sulfonated Poly(Ether Ether Ketone) Membrane Adsorber

open access: yesMembranes, 2023
Motivated by the need for efficient purification methods for the recovery of valuable resources, we developed a wire-electrospun membrane adsorber without the need for post-modification.
Niki Joosten   +4 more
doaj   +1 more source

Efficiency Analysis of Fuel Cell Components with Ionic Poly-Arylether Composite Membrane

open access: yesMembranes, 2022
We use polyethylene glycol as an additive to explore how the hydrogen bonding of this additive changes the properties of SA8 blended sulfonated polyetheretherketone (SPEEK) composite films.
Hsin-Yi Wen   +4 more
doaj   +1 more source

Extraction of Pregabalin in Urine Samples Using a Sulfonated Poly(ether ether ketone) Membrane

open access: yesInternational Journal of Analytical Chemistry, 2021
In this work, a simple polymer-assisted microextraction technique was developed to determine pregabalin (an anticonvulsant drug) in the urine sample. A sulfonated poly(ether ether ketone) membrane was used as a sorbent for pregabalin extraction, and the ...
Chanbasha Basheer
doaj   +1 more source

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