Sentences with phrase «hydrogen oxidation»

The team continues to uncover the basic design principles for catalysts capable of hydrogen oxidation and hydrogen production.

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.

«In this article, we're talking about hydrogen oxidation, which is for fuel cells.

«With hydrogen oxidation, you have a fuel cell reaction.

Hydrogen oxidation and hydrogen evolution reactions are two of the simplest electrochemical reactions, yet happen to be the backbone to developing critical clean energy technologies.

They can create great diversity initiated by one simple carbon - hydrogen oxidation reaction.»

Twenty common amino acids exist in nature, but are altered by carbon - hydrogen oxidation reactions to change their shape or add functional groups such as alcohols or carboxylic acids.

Not exact matches

White's group is working on catalysts that can modify a wider range of amino acids, particularly those with electron - rich aromatic functionality, which compete with the carbon - hydrogen bonds for oxidation using the current catalyst.

The finding that cerium oxide may grab hydrogen as well as oxygen is promising for efforts to engineer it to catalyze both reactions that cause electron gain («reduction» of a reactant) and electron loss («oxidation»).

(In fact, the oxidation that gives Mars its distinctive hue is a direct result of the loss of hydrogen.)

In another application, the sensor was used to study how cells respond to the introduction of extracellular hydrogen peroxide, which produces a wave of oxidation as it moves through the cellular structures.

Knowing the precise location of hydrogen peroxide within cells could help scientists gain a better understanding of oxidation - reduction reactions taking place there.

To understand the role of hydrogen peroxide in signaling and oxidation, however, the researchers wanted to know the time - resolved location of the chemical.

So the bacteria evidently form a sort of conductive chain, comprising biological nanowires and possibly pyrite grains embedded in the mud, that allows electrons from the oxidation of hydrogen sulfide and carbon within the sediment to contribute to the reduction of oxygen by other microbes at the sediment surface.

One of the byproducts of oxidations with hydrogen peroxide (H2O2) is water (H2O), which is the cleanest waste product you could have.»

In place of turbochargers and high - octane gas, the scientists tweaked their engine design and used an additive to speed the oxidation of hydrogen peroxide into fuel to create nanomachines 350 times more powerful than any previously built.

They cranked them up even more — to 200 microns per second (equivalent to 100 of the nanomachine's body lengths)-- by also adding hydrazine, an ammonia - derived chemical compound that accelerates hydrogen peroxide oxidation.

When Gao joined Koo's lab in 2013, he proposed using these nanoparticles in an oral setting, as the oxidation of hydrogen peroxide produces free radicals that can kill bacteria.

Several students in Flaherty's lab are currently exploring different ways of «coupling this chemistry directly with reactions that use hydrogen peroxide for green oxidations within very short length scales,» that is, micrometers away, Flaherty said.

«If we can put these H2O2 formation catalysts very close to something which performs the oxidation reaction, we can avoid the entire problem or concentrating and transporting hydrogen peroxide.»

For example, metal oxidation might be the sole oxidation reaction during battery discharge, whereas the formation of hydrogen (a highly inflammable and therefore dangerous gas) might be a significant reduction reaction during battery recharging.

«This study shows for the first time that the oxidation of hydrogen sulfide and ammonia from the bottom waters could be a major contributor to lower pH in coastal oceans and may lead to more rapid acidification in coastal waters compared to the open ocean,» said Cai, the paper's lead author and an expert in marine chemistry and carbon's movement through coastal waters.

«Deciphering the Aqueous Chemistry of Glyoxal Oxidation with Hydrogen Peroxide Using Molecular Imaging.»

«Proton Delivery and Removal in [Ni (PR2NR ′ 2) 2] 2 + Hydrogen Production and Oxidation Catalysts.»

Hydrogen peroxide - mediated SERCA cysteine 674 oxidation contributes to impaired cardiac myocyte relaxation in senescent mouse heart.

Decoupling Hydrogen Production and Water Oxidation in a Hybrid Solar - Driven Vanadium Redox Cell Supported By a Bipolar Membrane with Earth - Abundant Catalysts Chengxiang Xiang

CoP As an Acid - Stable Electrocatalysts for the Hydrogen - Evolution Reaction: Synchrotron - Based Operando Oxidation - State Determinations F. H. Saadi, A. I. Carim, W. Drisdell, J. Yano, N. S. Lewis, and M. P. Soriaga

While tearing apart even a small molecule like hydrogen may seem difficult enough, controlling the oxidation to create an energy - efficient reaction is even more challenging.

Unfortunately, the rate of the water oxidation reaction is very slow, which limits the rate of the overall reaction and the efficiency of the solar - to - hydrogen conversion.

«Since the photoelectrochemical cell is built for the purpose of hydrogen production and HMF oxidation simply replaces oxygen production at the anode, in essence, no resources are used specifically for HMF oxidation,» says Choi.

Methods: Scientists has been developing molecular electrocatalysts for the oxidation of hydrogen, a common process in fuel cells, which could use hydrogen fuel created from renewable energy.

At the photoanode side, water molecules are split into oxygen gas (O2), electrons and hydrogen protons through oxidation in the presence of sunlight and the thin film coating the team recently developed.

Then they employed this oxidation reaction as the anode reaction of the PEC that produces hydrogen at the cathode.

The oxidation reaction process results in breaking apart hydrogen into two electrons and two protons.

«Molecular Electrocatalysts for Oxidation of Hydrogen Using Earth - Abundant Metals: Shoving Protons Around with Proton Relays.»

The scientists correlated the various peaks observed in the NMR spectra with the catalysts» reactivity for an oxidation reaction that removes a hydrogen atom from methanol.

«Moving Protons with Pendant Amines: Proton Mobility in a Nickel Catalyst for Oxidation of Hydrogen.»

Peroxisomes are also the organelle where hydrogen peroxide is degraded and used for other biochemical reactions, e.g. the oxidation of phenols or alcohol.

In one sentence: Scientists at Pacific Northwest National Laboratory found that a complex with a proton pathway and stabilized by outer coordination sphere interactions is reversible for hydrogen production / oxidation at room temperature and pressure.

In an artificial photosynthetic system, the oxidation of water molecules into oxygen, electrons and protons (hydrogen ions) provides the electrons needed to produce liquid fuels from carbon dioxide and water.

We showed that the transition from closed to open state leads to significant decreases in aqueous pH to circumneutral values and significant increases in aqueous hydrogen sulfide and iron concentrations to 10.6 μM and 59.1 μM, respectively, due to sediment AVS oxidation following sediment resuspension.

A recent study by Wood et al. demonstrated for the first time that human white scalp hair shafts accumulate hydrogen peroxide, a product of oxidation, with absent or very low levels of catalase and methionine sulfoxide reductase (MSR) protein.

This organic matter and oxygen is used by other life, like humans, to release the energy from this organic matter using biochemical oxidation, turning the hydrogen and oxygen back into water.

Chemically oxidation «of hydrogen removes its electron and gives H +, which contains no electrons and a nucleus which is usually composed of one proton.

The Molecular Catalysis Project involves directed discovery of homogeneous catalysts for the key reactions involved in solar - fuel generation: oxidation of water to oxygen, reduction of water to hydrogen, and reduction of carbon dioxide to carbon - based liquid fuels and selective intermediates.

Much hydrogen is itself produced in the atmopshere by the oxidation of methane, with total global emisssions estimated to be about 70 million tonnes each year.

Stored chemical energy obtained by the oxidation of carbon and hydrogen, will be our main source of energy long after this climate change insanity is rotting on the trash heap of history.

Fuel rods became exposed and began to melt, while generating large amounts of hydrogen from the rapid oxidation of zirconium contained in the cladding surrounding the nuclear fuel.

While a great deal of the energy liberated from natural gas combustion is from formation of water by uniting hydrogen with oxygen, in coal, much of the energy liberated is from oxidation of carbon.