Results 71 to 80 of about 198,175 (357)

Proton conductivity of Nafion-azolebisphosphonates membranes for PEM fuel cells [PDF]

, 2018
Energy systems with cleaner and sustainable sources are crucial challenges of the 21st century to deal with the environmental threat of global warming and the declining reserves of fossil fuels.
Rangel, Carmen M., Sá, Ana I. de, Teixeira, António P. S., Teixeira, Fátima C.   +3 more
core   +1 more source

Na+-H+ exchange activity in brush-border membrane vesicles isolated from chick small intestine [PDF]

, 1995
This study was undertaken to investigate the presence of a Na+{single bond}H+ antiporter in brush-border membrane vesicles (BBMV) isolated from chick small intestine.
Cano Rodríguez, María Mercedes, Ferrero, María Isabel, Ilundáin Larrañeta, María Anunciación Ana   +2 more
core   +1 more source

Universal In Situ Isotope Exchange Raman Spectroscopy (IERS) Methodology for Measuring Oxygen Surface Exchange Dynamics Using a Probe Layer

Advanced Functional Materials, EarlyView.
A bespoke multilayer thin film configuration has been designed, which overcomes the material dependency of conventional isotope exchange Raman spectroscopy (IERS). This universal IERS methodology is efficient, non‐destructive and provides additional structural information and time resolution, which can be further extended to various isotopic elements ...
Zonghao Shen, Francesco Chiabrera, Alexander Stangl, Laetitia Rapenne, Federico Baiutti, Carmen Jiménez, Albert Tarancón, Mónica Burriel   +7 more
wiley   +1 more source

Simultaneously Promoting Proton Conductivity and Mechanical Stability of SPEEK Membrane by Incorporating Porous g–C₃N₄

Membranes
Proton exchange membranes are widely used in environmentally friendly applications such as fuel cells and electrochemical hydrogen compression. In these applications, an ideal proton exchange membrane should have both excellent proton conductivity and ...
Xiaoyao Wang, Benbing Shi
doaj   +1 more source

Using small molecules to facilitate exchange of bicarbonate and chloride anions across liposomal membranes [PDF]

, 2009
Bicarbonate is involved in a wide range of biological processes, which include respiration, regulation of intracellular pH and fertilization. In this study we use a combination of NMR spectroscopy and ion-selective electrode techniques to show that the ...
A Fürstner, AP Davis, AV Koulov, C Yamamoto, D Stefayne, E Gout, ED Steinle, F Hofmeister, FA Norris, FG Riddell, HG Hempling, HM Florman, J Fujinaga, Jeffery T. Davis, JL Sessler, Jose Carlos Iglesias-Sánchez, JR Casey, JW Bennett, JY Choi, K Chang, K Kavallieratos, K Tanigaki, L You, M Nguyen, MS Melvin, NM Koropatkin, NN Gerber, NR Williamson, OA Okunola, Oluyomi A. Okunola, Philip A. Gale, Pilar Prados, PV Santacroce, RA Gottlieb, Roberto Quesada, S Ohkuma, T Sato, Tomás Torroba, V Rizzo, WN Lipscomb, WW Cleland, X Li   +41 more
core   +1 more source

GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction

Advanced Functional Materials, EarlyView.
Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri, Jian Li, Wahid Ullah, Fabien Baron, Franck Bourdelle, Stéphan Rouzière, Claire Goldmann, Erik Elkaim, Thomas Bizien, Rachid Belkhou, Delphine Vantelon, Mohamed Nawfal Ghazzal, Erwan Paineau   +12 more
wiley   +1 more source

Preparation of Neurospora crassa mitochondria [PDF]

, 1978
The fungus Neurospora crassa represents a eukaryotic cell with high biosynthetic activities. Cell mass doubles in 2-4 hr during expone ntial growth , even in simple salt media with sucrose as the sole carbon source. The microorgani sm forms a mycelium of
Jacki, Klingenberg, Michel, Neupert, Sebald, Vogel, von Jagow, von Ruecker, Weiss, Weiss, Weiss, Werner   +11 more
core   +2 more sources

Stabilizing Cationic Palladium Single‐Atom Sites on Heteroatom‐Doped Carbon for Selective Hydrogen Peroxide Electrosynthesis

Advanced Functional Materials, EarlyView.
In this research, it is demonstrated that dual nitrogen and sulfur doping in hollow carbon spheres creates a tunable coordination environment that stabilizes cationic Pd single atoms as robust organometallic complexes, enabling high selectivity and stability for electrochemical hydrogen peroxide production under harsh acidic and peroxide‐rich ...
Guilherme V. Fortunato, Alexander Gunnarson, Hannaneh Hosseini, Xiangyu You, Pallabi Bhuyan, Ji Sik Choi, Hyo Sang Jeon, Xingshen Zhao, Julio C. Lourenço, Sumin Lim, Huize Wang, Ana Guilherme Buzanich, Martin Radtke, Paul Paciok, Marcos R.V. Lanza, Ferdi Schüth, Marc Ledendecker   +16 more
wiley   +1 more source

Surface-coupled proton exchange of a membrane-bound proton acceptor [PDF]

Proceedings of the National Academy of Sciences, 2010
Proton-transfer reactions across and at the surface of biological membranes are central for maintaining the transmembrane proton electrochemical gradients involved in cellular energy conversion. In this study, fluorescence correlation spectroscopy was used to measure the local protonation and deprotonation rates of single pH-sensitive ...
Sandén, Tor, Salomonsson, Lina, Brzezinski, Peter, Widengren, Jerker   +3 more
openaire   +3 more sources

Proton transport for fuel cells [PDF]

, 2010
No ...
Haile, Sossina M., Pintauro, Peter N.
core   +1 more source