Results 11 to 20 of about 907,608 (354)

The Influence of Transitional Metal Dopants on Reducing Chlorine Evolution during the Electrolysis of Raw Seawater

Applied Sciences, 2021
Electrocatalytic water splitting is a possible route to the expanded generation of green hydrogen; however, a long-term challenge is the requirement of fresh water as an electrolyzer feed.
Prajwal Adiga, Nathan Doi, Cindy Wong, Daniel M. Santosa, Li-Jung Kuo, Gary A. Gill, Joshua A. Silverstein, Nancy M. Avalos, Jarrod V. Crum, Mark H. Engelhard, Kelsey A. Stoerzinger, Robert Matthew Asmussen   +11 more
doaj   +1 more source

Metal-Oxides- and Metal-Oxyhydroxides-Based Nanocomposites for Water Splitting: An Overview

Nanomaterials, 2023
Water electrolysis is an important alternative technology for large-scale hydrogen production to facilitate the development of green energy technology.
Tse-Wei Chen, Shen-Ming Chen, Ganesan Anushya, Ramanujam Kannan, Pitchaimani Veerakumar, Mohammed Mujahid Alam, Saranvignesh Alargarsamy, Rasu Ramachandran   +7 more
doaj   +1 more source

Galactic Evolution of Beryllium and Oxygen [PDF]

, 2000
We discuss the early evolution of beryllium and oxygen in our Galaxy by comparing abundances of these elements for halo and disk metal-poor stars. Both, O and Be rise as we go progressively to more metal-rich stars, showing a slope 0.41 +-0.09 ([Be/O] vs
Israelian, Garik, Lopez, Ramon Garcia, Rebolo, Rafael   +2 more
core   +2 more sources

Looking beyond stratification: a model-based analysis of the biological drivers of oxygen deficiency in the North Sea [PDF]

, 2016
Low oxygen conditions, often referred to as oxy- gen deficiency, occur regularly in the North Sea, a temperate European shelf sea. Stratification represents a major process regulating the seasonal dynamics of bottom oxygen, yet, low- est oxygen ...
Greenwood, Naomi, Große, Fabian, Kreus, Markus, Lenhart, Hermann-Josef, Machoczek, Detlev, Pätsch, Johannes, Salt, Lesley, Thomas, Helmuth   +7 more
core   +3 more sources

Self-template synthesis of hollow flower-like NiCo2O4 nanoparticles as an efficient bifunctional catalyst for oxygen reduction and oxygen evolution in alkaline media

Nanotechnology Reviews, 2023
A method was proposed to synthesize hollow flower-like NiCo2O4 composed of porous nanosheets using a self-template approach. The unique structure is attributed to the synergistic effect of the Kirkendall effect and the Ostwald ripening mechanism.
Fu Lixiang, Ma Jingling, Zhang Zhikang, Wang Guangxin, Liu Yuliang, Li Wuhui   +5 more
doaj   +1 more source

Effect of Calcination Temperature on the Activity of Unsupported IrO₂ Electrocatalysts for the Oxygen Evolution Reaction in Polymer Electrolyte Membrane Water Electrolyzers

Molecules, 2023
Polymer electrolyte membrane (PEM) water electrolyzers suffer mainly from slow kinetics regarding the oxygen evolution reaction (OER). Noble metal oxides, like IrO2 and RuO2, are generally more active for OER than metal electrodes, exhibiting low anodic ...
Angeliki Banti, Kalliopi Maria Papazisi, Stella Balomenou, Dimitrios Tsiplakides   +3 more
doaj   +1 more source

Oxygen Evolution Reaction at IrO₂/Ir(Ni) Film Electrodes Prepared by Galvanic Replacement and Anodization: Effect of Precursor Ni Film Thickness

Molecules, 2019
IrO2/Ir(Ni) film electrodes of variable Ni content have been prepared via a galvanic replacement method, whereby surface layers of pre-deposited Ni are replaced by Ir, followed by electrochemical anodization.
Aikaterini Touni, Athanasios Papaderakis, Dimitrios Karfaridis, Georgios Vourlias, Sotiris Sotiropoulos   +4 more
doaj   +1 more source

A Molecular Tetrahedral Cobalt–Seleno-Based Complex as an Efficient Electrocatalyst for Water Splitting

Molecules, 2021
The cobalt–seleno-based coordination complex, [Co{(SePiPr2)2N}2], is reported with respect to its catalytic activity in oxygen evolution and hydrogen evolution reactions (OER and HER, respectively) in alkaline solutions.
Ibrahim Munkaila Abdullahi, Jahangir Masud, Polydoros-Chrisovalantis Ioannou, Eleftherios Ferentinos, Panayotis Kyritsis, Manashi Nath   +5 more
doaj   +1 more source

Cytochromes P450, Oxygen, and Evolution [PDF]

The Scientific World JOURNAL, 2001
The role of the cytochrome P450 superfamily of heme-thiolate enzymes in oxidative metabolism is discussed in the context of evolutionary development. Concordances between the rise in atmospheric oxygen content, elaboration of the P450 phylogenetic tree and the accepted timescale for the emergence of animal phyla are described. The unique ability of the
David F.V. Lewis, Grainné Sheridan
openaire   +3 more sources

Evolution of Neutron-Star, Carbon-Oxygen White-Dwarf Binaries [PDF]

, 2000
At least one, but more likely two or more, eccentric neutron-star, carbon-oxygen white-dwarf binaries with an unrecycled pulsar have been observed.
Braun H., Brown G. E., C.‐H. Lee, G. E. Brown, H. A. Bethe, Habets G. M. B. H., Habets G. M. B. H., Lorimer D. R., Phinney E. S., Portegies Zwart S. F., S. F. Portegies Zwart, Shima E., Tauris T. M., van den Heuvel E. P. J., van den Heuvel E. P. J., van den Heuvel E. P. J., van Paradijs J., van Paradijs J., Wellstein S., Wijers R. A. M. J., Zuiderwijk E.   +20 more
core   +2 more sources