Results 31 to 40 of about 235,631 (302)

Oxygen Sensing of Pt/PEO-TiO2 in Humid Atmospheres at Moderate Temperatures

open access: yesSensors, 2021
Here, we show that the presence of adsorbed water improves the oxygen-sensing properties of Pt/TiO2 at moderate temperatures. The studied interface is based on porous plasma electrolytic oxidized titanium (PEO-TiO2) covered with platinum clusters.
Bernd Engelkamp, Klaus Schierbaum
doaj   +1 more source

Redox functionality mediated by adsorbed oxygen on a Pd-oxide film over a Pd(100) thin structure: A first-principles study

open access: yes, 2009
Stable oxygen sites on a PdO film over a Pd(100) thin structures with a (sqrt{5} times sqrt{5}) R27^circ surface-unit cell are determined using the first-principles electronic structure calculations with the generalized gradient approximation.
Giannozzi P   +5 more
core   +1 more source

Enhanced reactivity of adsorbed oxygen on Pd(111) induced by compression of the oxygen layer [PDF]

open access: yesPhysical Review B, 2005
The reaction between O atoms and CO molecules on Pd(111) was investigated by scanning tunneling microscopy (STM). CO was dosed on the $(2\ifmmode\times\else\texttimes\fi{}2)\mathrm{O}$-covered surface at temperatures between 100 and $190\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, and the structure changes were monitored by STM.
Kim, S.   +3 more
openaire   +2 more sources

Phenol Adsorption from Dilute Aqueous Solutions by Carbons

open access: yesCHIMIA, 2003
The adsorption of phenol from dilute aqueous solutions by seven activated carbons and one non-porous carbon black is reported. It is confirmed that the equilibrium can be described by a modified Dubinin-Radushkevich-Kaganer equation, with ...
Elena Fernandez   +4 more
doaj   +1 more source

Heavy metal deposition and parameter change of soft contact lenses by exposure to particulate matter

open access: yesBMC Ophthalmology, 2023
Background Particulate matter (PM) is known to contain heavy metals and be harmful to the tissues and organs of the human body including the eyes. As such, in this study, the deposition of heavy metals from PM on soft contact lenses was examined, and ...
Won Young Jung   +3 more
doaj   +1 more source

Atomistic insights into interactions between oxygen and α–Zr (101-1) surface

open access: yesNuclear Materials and Energy, 2021
The oxidation corrosion is a crucial challenge for zirconium (Zr) alloys as cladding materials in fission power reactors. In the present study, a first-principles approach is employed for understanding behaviors of oxygen adsorbed on the Zr (101-1 ...
Zhixiao Liu, Wangyu Hu, Hiuqiu Deng
doaj   +1 more source

LIMITED OXIDATION OF IRRADIATED GRAPHITE WASTE TO REMOVE SURFACE CARBON-14

open access: yesNuclear Engineering and Technology, 2013
Large quantities of irradiated graphite waste from graphite-moderated nuclear reactors exist and are expected to increase in the case of High Temperature Reactor (HTR) deployment [1,2].
TARA E. SMITH   +2 more
doaj   +1 more source

Understanding of mobility limiting factors in solution grown Al doped ZnO thin film and its low temperature remedy

open access: yesHeliyon, 2022
The solution grown doped ZnO based transparent electrode has shown great potential in future generation flexible and smart devices due to its abundance in earth, low cost, simple and low temperature synthesis process.
Biswajit Mahapatra, Sanjit Sarkar
doaj   +1 more source

Doping graphene by adsorption of polar molecules at the oxidized zigzag edges

open access: yes, 2009
We have theoretically investigated the electronic and magnetic properties of graphene whose zigzag edges are oxidized. The alteration of these properties by adsorption of $\mathrm{H_{2}O}$ and $\mathrm{NH_3}$ molecules have been considered.
Berashevich, Julia, Chakraborty, Tapash
core   +1 more source

Domain formation on oxidized graphene [PDF]

open access: yes, 2012
Using first-principles calculations within density functional theory we demonstrate that the adsorption of single oxygen atom results in significant electron transfer from graphene to oxygen.
Ciraci, S., Topsakal, M.
core   +2 more sources

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