Room Temperature Water Splitting at the Surface of Magnetite.

Summary of "Room Temperature Water Splitting at the Surface of Magnetite."

An array of surface science measurements has revealed novel water adsorption behavior at the Fe(3)O(4)(001) surface. Following room temperature exposure to water, a low coverage of hydrogen atoms is observed, with no associated water hydroxyl group. Mild annealing of the hydrogenated surface leads to desorption of water via abstraction of surface oxygen atoms, leading to a reduction of the surface. These results point to an irreversible splitting of the water molecule. The observed phenomena are discussed in the context of recent DFT calculations ( Mulakaluri , N. ; Pentcheva , R. ; Scheffler , M. J. Phys. Chem. C 2010 , 114 , 11148 ), which show that the Jahn-Teller distorted surface isolates adsorbed H in a geometry that could kinetically hinder recombinative desorption. In contrast, the adsorption geometry facilitates interaction between water hydroxyl species, which are concluded to leave the surface following a reactive desorption process, possibly via the creation of O(2).


Institute of Applied Physics, Vienna University of Technology , Vienna, Austria.

Journal Details

This article was published in the following journal.

Name: Journal of the American Chemical Society
ISSN: 1520-5126
Pages: 12650-12655


DeepDyve research library

PubMed Articles [17202 Associated PubMed Articles listed on BioPortfolio]

Rotating Flow of Magnetite-Water Nanofluid over a Stretching Surface Inspired by Non-Linear Thermal Radiation.

Present study explores the MHD three-dimensional rotating flow and heat transfer of ferrofluid induced by a radiative surface. The base fluid is considered as water with magnetite-Fe3O4 nanoparticles....

The potential versus current state of water splitting with hematite.

This review describes the potential of hematite as a photoanode material for photoelectrochemical (PEC) water splitting. The current understanding of key loss-mechanisms of hematite are introduced and...

Anomalous Freezing of Nano-confined Water in Room Temperature Ionic Liquid, 1-Butyl-3-Methylimidazolium Nitrate.

Non-crystal formation of ice was investigated by simultaneous X-ray diffraction and differential scanning calorimetry measurements upon cooling to -100 °C. At room temperature, size-tunable water con...

Adsorption of Oxyanions from Industrial Wastewater using Perlite-Supported Magnetite.

Most studies on oxyanion adsorption focus on their removal from synthetic solutions. It is often claimed that the considered adsorbents can be used to treat real (industrial) wastewaters, but this is ...

Magnetic magnetite (Fe3O4) nanoparticle synthesis and applications for lead (Pb(2+)) and chromium (Cr(6+)) removal from water.

Magnetic magnetite (Fe3O4) nanoparticles synthesized by chemical co-precipitation were characterized using XRD, TEM, SEM-EDX, FT-IR, ED-XRF, PPMS, point of zero charge (pHpzc) and surface area measure...

Clinical Trials [1748 Associated Clinical Trials listed on BioPortfolio]

Comparison of Body and Room Temperature Saline in Urodynamics

The purpose of this study is to compare first urge, strong urge, and maximum capacity, and perception of discomfort during urodynamic testing between room temperature and body temperate sa...

Effect of Probe Placement in Delivery Room on Temperature at the Admission of Premature Infants?

The aim of the study is to compare the effect of 3 different skin temperature placement probe in the case room on the admission temperature to the NICU in preterm infants. The authors aim ...

New Device to Maintain the Embryo Temperature During Transfer

The embryo transfer implies transportation from the incubator where they have been at 37 ° C, to the transfer catheter inside a laminar flow hood whose working surface is also maintained ...

The Impact of Warmed Carbon Dioxide Insufflation During Colonoscopy on Polyp Detection

Colorectal cancer is the second most common cancer in the world and the second leading cause of cancer-related mortality. Colorectal cancers arise from precursor adenomatous polyps in a w...

"Association Splitting" in Obsessive-Compulsive Disorder (OCD)

Over a period of 3 weeks, association splitting is compared to cognitive remediation (CogPack training) as an add-on intervention to cognitive-behavioral therapy (CBT). Blind to treatment ...

Medical and Biotech [MESH] Definitions

The TEMPERATURE at the outer surface of the body.

Medicated dosage forms that are designed to be inserted into the rectal, vaginal, or urethral orifice of the body for absorption. Generally, the active ingredients are packaged in dosage forms containing fatty bases such as cocoa butter, hydrogenated oil, or glycerogelatin that are solid at room temperature but melt or dissolve at body temperature.

A surfactant that renders a surface wettable by water or enhances the spreading of water over the surface; used in foods and cosmetics; important in contrast media; also with contact lenses, dentures, and some prostheses. Synonyms: humectants; hydrating agents.

Organic compounds that have a relatively high VAPOR PRESSURE at room temperature.

Circulation of water among various ecological systems, in various states, on, above, and below the surface of the earth.

Quick Search

DeepDyve research library

Relevant Topic

A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. For example: to diagnose diseases to measure the progress or recovery from disease to confirm that a person is free from disease Clin...

Searches Linking to this Article