Sentences with phrase «for oxygen evolution»

Jeffrey Neation, «High - Throughput Discovery of Electrochemically Stable Photocatalysts for Oxygen Evolution»

Electrocatalyst design and development for the Oxygen Evolution Reaction (OER) and the electro - reduction.

By integrating theory and experiment, we validate our approach and develop important new insights into structure - property relationships for TMOs for oxygen evolution photocatalysts, paving the way for use of first - principles data - driven techniques in future applications.

High throughput, multi-pH evaluation of earth - abundant pseudo-quaternary metal oxide catalysts for the oxygen evolution reaction J. Haber, D. Guevarra, R.J.R. Jones, K. Kan, J. Gregoire

The Reaction Mechanism with Free Energy Barriers at Constant Potentials for the Oxygen Evolution Reaction at the IrO2 (110) Surface.

There they will measure the photocatalytic activity for the oxygen evolution and hydrogen evolution reactions, as occur when light energy is successfully used to break water down into useable fuel.

Jaramillo and his collaborators sought to develop a catalyst for the oxygen evolution reaction, the notoriously slow half of the water - splitting process.

[Antoine Allanore, Lan Yin and Donald R. Sadoway, A new anode material for oxygen evolution in molten oxide electrolysis, in Nature]

While unstrained lanthanum nickelate is a catalyst on its own for oxygen evolution, the strained material is an even better catalyst, enabling oxygen reduction as well.

Not exact matches

Researchers working in Papua New Guinea think they may have been wiped out when the level of oxygen in the oceans rose dramatically, stimulating the evolution of oxygen - hungry fish that simply out - competed the ammonites for resources.

«People previously thought that you needed some threshold level of oxygen for evolution to work really well,» says Carl Simpson, a paleobiologist at the University of Colorado in Boulder who was not involved in the work.

«Low level of oxygen in Earth's middle ages delayed evolution for two billion years: A low level of atmospheric oxygen in Earth's middle ages held back evolution for 2 billion years, raising fresh questions about the origins of life on this planet.»

A low level of atmospheric oxygen in Earth's middle ages held back evolution for 2 billion years, raising fresh questions about the origins of life on this planet.

Rice University scientists have created an efficient, simple - to - manufacture oxygen - evolution catalyst that pairs well with semiconductors for solar water splitting, the conversion of solar energy to chemical energy in the form of hydrogen and oxygen.

Results of the study, which the researchers report online today in the Proceedings of the National Academy of Sciences, show that for the first 170 million years or so of flying - insect evolution, wing length grew and shrank in step with variations in average oxygen concentration.

Professor Andrew Scott, one of the lead authors, said: «High oxygen levels in the atmosphere at this time has been proposed for some time and may be why there were giant insects and arthropods at this time but our research indicates that there was a significant impact on the prevalence and scale of wildfires across the globe and this would have affected not only the ecology of the plants and animals but also their evolution.»

If the enzyme is an evolutionary predecessor of Photosystem II, then evolution borrowed an enzyme that was originally used for chlorophyll synthesis and used it to evolve an enzyme that could produce oxygen, which ultimately led to changes in Earth's atmosphere,» said Bryant.

Co-author Professor Tim Lenton of the University of Exeter adds: «We already think this cycle was key to helping stabilise atmospheric oxygen during the Phanerozoic (the last 542 million years)-- and that oxygen stability is a good thing for the evolution of plants and animals.

The finding challenges the standard view that the evolution of animals was delayed by a lack of sufficient oxygen for them to breathe — and fits with a theory that the first animals may have helped raise oxygen levels.

Early land plants had already started leaking oxygen into the atmosphere, creating soils and providing food and shelter for animals, and the evolution of trees upped the pace of change.

«Amber provides new insights into the evolution of Earth's atmosphere: Low oxygen levels for dinosaurs.»

Tappert now suggests to reconsider these theories: «We do not want to negate the influence of oxygen for the evolution of life in general with our study, but the gigantism of dinosaurs can not be explained by those theories.»

This newly established lab is capable to design and fabricate a wide variety of advanced materials for oxygen reduction, hydrogen oxidation, water oxidation, and hydrogen evolution, among others.

Resume: Highly active and low - cost electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are crucial due to the need for clean and renewable energy.

This not only suggests that liquid - ordered membranes may be common outside the Domain Eukarya, but it decouples the evolution of this trait from the requirement for molecular oxygen.

Developing Novel Platinum Group Metal - Free Catalysts for Alkaline Hydrogen and Oxygen Evolution Reactions, Sanjeev Mukerjee and Serge Pann, Northeastern University

Using theory, modern surface - science methods, and synchrotron - based techniques, JCAP researchers seek to understand the reaction pathways and the elementary steps of the hydrogen and oxygen evolutions reactions to facilitate the design of new, Earth - abundant catalysts for solar - fuels production.

So unless there is a permanent, drastic, progressive and one - way alteration in the chemical makeup of the oceans over geological epochs (which would entail the massive evolution of hydrogen gas and the production of oxygen, chlorine or hydrogen peroxide) or a similarly huge increase in its potential energy (levitating it off the ocean floor), the energy involved will still have to be dissipated as heat (there's nowhere else for it to go, unless you get all science - fictiony and assume it vanishes into hyperspace or turns into neutrinos or something).

The oxygen isotope evolution of seawater: a critical review of a long - standing controversy and an improved geological water cycle model for the past 3.4 billion years

That footage is some of the most compelling action in Sharkwater, Stewart's 2006 acclaimed documentary, which explains how the ocean's apex predator has driven the evolution of marine species for over 400 million years and plays a pivotal role in climate stabilization (by feeding on species that eat plankton, which transform carbon dioxide into oxygen).