Sentences with phrase «hydroxide ion»

«The Reorientation Mechanism of Hydroxide Ions in Water: A Molecular Dynamics Study.»

Results: Whole water molecules form complex shapes around hydroxide ions, simple negatively charged particles, according to a recent study by scientists at Pacific Northwest National Laboratory.

This research answers the question, debated in scientific circles for more than 70 years, of how hydroxide ions get oriented in water.

Existing nickel - cadmium and nickel - metal hydride batteries used chemical changes on the surface of two electrodes within them to shunt charge - bearing hydroxide ions and protons this way and that, and so charge and discharge.

The same carbon nanotubes that make up the skeleton of the 1D battery can also accelerate the conversion of dissolved oxygen into hydroxide ions, a process that harms battery effectiveness if left uncontrolled but as a stand - alone process boasts therapeutic potential for treating cancer and bacterial infections.

«We show that the diffusion of protons and hydroxide ions occurs during periods of intense activity involving concerted proton hopping, followed by periods of rest,» wrote primary author Ali A. Hassanali of the Swiss Federal Institute of Technology Zurich in the publication.

What's Next: The scientists continue to examine the behavior of hydroxide ions at the water / air interfaces with molecular dynamics simulations and other approaches.

Methods: The theoretical chemistry team from Pacific Northwest National Laboratory built and ran simulations of how hydroxide ions and water molecules moved based on the basic principles of physics.

«Rewrite the textbooks on water's surface tension: Air - water interface is negatively charged by the adsorption of hydroxide ions.»

* Correction, 23 December, 11:45 a.m.: A previous version of this story incorrectly described the hydroxyl radical as OH -, which refers to the hydroxide ion.

Oxygen atoms are depicted in pink, and hydrogen in blue, in oxygen reduction and evolution reactions that transfer electrons between two species and convert oxygen molecules to hydroxide ions and vice versa.

However, these transporters may also carry protons or hydroxide ions, which could disrupt pH homeostasis in the human body and lead to undesired toxic effects.

Prof Angus Gray - Weale from the Chemistry, Department of Chemistry University of Melbourne said, «The surface tension of water affects its behavior and changes with pH but previous research about the adsorption of various ions at the interface all ignored the presence of the hydroxide ion and its charge.»

These latest investigations have clinched a long - standing controversy amongst the physical Chemistry community; the air - water interface is negatively charged by the adsorption of hydroxide ions.

After running both models on computers provided by the Department of Energy and the Louisiana Optical Network Initiative, the scientists found the hydroxide ion prefers to congregate at the water's surface.

First, the water molecules around the hydroxide ion bounced around, positioning and creating hydrogen bonds with the hydroxide.

Once the structure was formed, the hydroxide ion relaxed to the minimum energy configuration.

A hydroxide ion is an oxygen atom and a hydrogen atom bonded together with an extra electron.

Studying the ions in water, the team found the hydroxide ion can form two different structures.

Why it matters: Knowing how hydroxide ions are arranged in water could aid scientists in fine - tuning current industrial processes, such as manufacturing biodiesel, making processes more efficient or less wasteful.

What makes them alkaline is the presence of hydroxide ions (OH --RRB-.