Results 31 to 40 of about 14,886 (263)

Sensitive Differential Pulse Stripping Voltammetry of Caffeine in Medicines and Cola Using a Sensor Based on Multi-Walled Carbon Nanotubes and Nafion

International Journal of Electrochemical Science, 2011
A sensitive electrochemical sensor for the determination of caffeine (3,7 – dihydro - 1, 3, 7 – trimethyl - 1H – purine - 2, 6 – dione) based on a multi-walled carbon nanotube and a Nafion-modified glassy carbon electrode (MWCNT-Nafion/GCE) using ...
J. Zhang, L.P. Wang, W. Guo, X.D. Peng, M. Li, Z.B. Yuan   +5 more
doaj   +1 more source

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

Advanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee, Yun‐Tae Kim, Hwarang Choi, Sanghwan Park, Seongyeop Lim, Chang Young Lee   +5 more
wiley   +1 more source

Layer by Layer Antimicrobial Coatings Based on Nafion, Lysozyme, and Chitosan

Nanomaterials, 2019
The study focuses on the development of a new family of layer-by-layer coatings comprising Nafion, lysozyme and chitosan to address challenges related to microbial contamination. Circular dichroism was employed to gain insights on the interactions of the
Ella N. Gibbons, Charis Winder, Elliot Barron, Diogo Fernandes, Marta J. Krysmann, Antonios Kelarakis, Adam V. S. Parry, Stephen G. Yeates   +7 more
doaj   +1 more source

Dissipative Particle Dynamics simulation hydrated Nafion EW 1200 as fuel cell membrane in nanoscopic scale [PDF]

Transport Phenomena in Nano and Micro Scales, 2016
The microphase separation of hydrated perfluorinated sulfonic acid membrane Nafion was investigated using Dissipative Particle Dynamics (DPD). The nafion as a polymer was modelled by connecting coarse grained beads which corresponds to the hydrophobic ...
H. Hassanzadeh Afrouzi, A. Moshfegh, M. Farhadi, K. Sedighi   +3 more
doaj   +1 more source

Enhanced Performance of Polymer Electrolyte Membranes via Modification with Ionic Liquids for Fuel Cell Applications

Membranes, 2021
The polymer electrolyte membrane (PEM) is a key component in the PEM fuel cell (PEMFC) system. This study highlights the latest development of PEM technology by combining Nafion® and ionic liquids, namely 2–Hydroxyethylammonium Formate (2–HEAF) and ...
Jonathan Teik Ean Goh, Ainul Rasyidah Abdul Rahim, Mohd Shahbudin Masdar, Loh Kee Shyuan   +3 more
doaj   +1 more source

Molecular‐Dynamics Modeling of Nafion Membranes

Macromolecular Symposia, 2022
AbstractThe Nafion is a commonly used polyelectrolyte membrane (PEM) in fuel cells and flow batteries. Nanocomposites of Nafion are used to enhance temperature resistance and proton conductivity. The molecular‐dynamics simulation results are reported for Nafion films of different thicknesses confined between two potential walls of variable wettability,
Soumyadipta Sengupta, Rakesh Pant, Arun Venkatnathan, Alexey V. Lyulin   +3 more
openaire   +2 more sources

Magnetic‐Field Control of Surface States in CoFe2O4 Thin Films for Nitrate Electroreduction to Ammonia

Advanced Functional Materials, EarlyView.
Magnetic‐field‐assisted CVD of heterometallic single‐source precursors modulates thin‐film surface electronic structure and interfacial charge transfer. Field‐grown (Cobalt ferrite‐1T)CF‐1T films exhibit stabilized electronic states, lower kinetic barriers, and markedly enhanced nitrate‐to‐ammonia electrocatalysis versus (Cobalt ferrite‐0T) CF‐0T ...
Touraj Karimpour, Younes Mousazade, Simon Diel, Shilendra Kumar Sharma, Tisita Das, Nathália C. Verissimo, Thomas Fischer, Ziyaad Aytuna, Andreas Lichtenberg, Sudip Chakraborty, Marcel Risch, Sanjay Mathur   +11 more
wiley   +1 more source

3D‐Printed Piezoionic/Bioelectronic Hydrogel for Electro‐Metabolic Regulation of Osteogenic Differentiation

Advanced Healthcare Materials, EarlyView.
A 3D‐printed piezoionic GPMx hydrogel enables stable electromechanical signal generation under mechanical loading, exhibiting long‐term durability and low fatigue. As a bioactive patch, it restores endogenous bioelectricity to stimulate osteogenesis via Ca2+ influx and mitochondrial activation, while simultaneously enabling label‐free alkaline ...
Sayan Deb Dutta, Myoung Joon Jeon, Youjin Seol, Ki‐Taek Lim   +3 more
wiley   +1 more source

A radiation-resistant MWCNT/Nafion/MWCNT composite film for humidity perception

e-Polymers
Humidity is a necessary detection index in the nuclear industry, but the current humidity sensor is unable to resist nuclear radiation. In this work, we develop a radiation-resistant humidity sensor, which is made of multiwalled carbon nanotube (MWCNT ...
Sheng Junjie, Ji Yujun, Zhao Shijie, Qiu Yong, Zhao Chun, Tang Gangqiang, Wang Yanjie   +6 more
doaj   +1 more source

Nafion-based solid polymer electrolytes for lithium-ion and sodium-ion batteries [PDF]

Электрохимическая энергетика
The use of solid polymer electrolytes is a novel and promising approach for enhancing the safety of lithium-ion and sodium-ion batteries. A number of publications on manufacturing electrolytes with lithium-ion and sodium-ion conductivity based on Nafion ...
Kulova, Tatiana L'vovna, Skundin, Alexander Mordukhaevich   +1 more
doaj   +1 more source