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Glucose oxidation is a key reaction in biosensing and energy conversion, with anodized copper electrodes showing great potential as catalysts for its enhancement. This study explores the relationship between anodization parameters and…

In carbon capture and sequestration, building an effective monitoring method is a crucial step to detect and respond to CO2 leakage. CO2 leakage detection methods rely on geophysical observations and monitoring sensor network. However,…

Geophysics · Physics 2019-01-29 Zheng Zhou , Youzuo Lin , Yue Wu , Zan Wang , Robert Dilmore , George Guthrie

Experimental results on the thermal desorption of benzene (C6H6) from amorphous silica (SiO2) are presented. The amorphous SiO2 substrate was imaged using atomic force microscopy (AFM), revealing a surface morphology reminiscent of that of…

Astrophysics · Physics 2015-10-21 J. D. Thrower , M. P. Collings , F. J. M. Rutten , M. R. S. McCoustra

We report our new observations of redshifted carbon monoxide emission from six z~6 quasars, using the PdBI. CO (6-5) or (5-4) line emission was detected in all six sources. Together with two other previous CO detections, these observations…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Ran Wang , Chris L. Carilli , R. Neri , D. A. Riechers , Jeff Wagg , Fabian Walter , Frank Bertoldi , Karl M. Menten , Alain Omont , Pierre Cox , Xiaohui Fan

The mechanical, structural, electronic and magnetic properties of s-triazine sheet (C6N6) with embedded Mn atom (Mn-C6N6) is investigated under the influence of external environment using density functional theory. Our results show that…

Interstellar CO2 is an important reservoir of carbon and oxygen, and one of the major constituents of the icy mantles of dust grains, but it is not observable directly in the cold gas because has no permanent dipole moment. Its protonated…

Astrophysics of Galaxies · Physics 2018-09-19 F. Fontani , A. Vagnoli , M. Padovani , L. Colzi , P. Caselli , V. M. Rivilla

Catalytic conversion of CO$_2$ into useful chemicals is an attractive alternative to expensive physical carbon sequestration methods. However, this approach is challenging because current chemical conversion methods employ high temperatures…

Chemical Physics · Physics 2015-07-30 Babatunde Alawode , Alexie Kolpak

In the course of our investigations of the adsorption of ions to the air-water interface, we previously reported the surprising result that doubly-charged carbonate anions exhibit a stronger surface affinity than do singly-charged…

Density functional calculations of the electronic structure are used to elucidate the bonding of Li$_3$AlH$_6$. It is found that this material is best described as ionic, and in particular that the [AlH$_6$]$^{3-}$ units are not reasonably…

Materials Science · Physics 2009-11-10 D. J. Singh

The binding energy of A3C60, a conductor, is described well by an ionic solid type calculation. This succeeds because there is little overlap between molecular wave functions on neighbouring sites, so that electrons are practically…

Materials Science · Physics 2007-05-23 K. Ranjan , Sarbpreet Singh , K. Dharamvir , V. K. Jindal

In order to understand the first stages of the nucleation of carbon nanotubes in catalytic processes, we present a tight-binding Monte Carlo study of the stability and cohesive mechanisms of different carbon structures deposited on nickel…

Materials Science · Physics 2009-11-13 Hakim Amara , Christophe Bichara , François Ducastelle

Using density functional theory we show that an applied electric field substantially improves the hydrogen storage properties of a BN sheet by polarizing the hydrogen molecules as well as the substrate. The adsorption energy of a single H2…

Materials Science · Physics 2016-12-28 J. Zhou , Q. Wang , Q. Sun , P. Jena , X. S. Chen

A complex rare-earth rich aluminoborosilicate glass has been proved to be a good candidate for the immobilization of new high level radioactive wastes. A simplified seven-oxides composition of this glass was selected for this study. In this…

Materials Science · Physics 2009-12-09 Arnaud Quintas , Daniel Caurant , Odile Majérus , Thibault Charpentier , Jean-Luc Dussossoy

We performed density-functional theory calculations using the generalized gradient approximation for the exhange-correlation functional to investigate the unusual catalytic behavior of Ru under elevated gas pressure conditions for the…

Materials Science · Physics 2008-02-03 C. Stampfl , M. Scheffler

The effect of humidity on the cooperative adsorption of CO2 from air on amine appended metal organic frameworks is studied both experimentally and theoretically. Breakthrough experiments show that at low relative humidities there is an…

Soft Condensed Matter · Physics 2024-07-25 Bennett Marshall , Pavel Kortunov , Aaron Peters , Hilda Vroman

Crystal structure prediction methods and first-principles calculations have been used to explore low-energy structures of carbon monoxide (CO). Contrary to the standard wisdom, the most stable structure of CO at ambient pressure was found…

Materials Science · Physics 2017-04-06 Kang Xia , Jian Sun , Chris J. Pickard , Dennis D. Klug , Richard J. Needs

Carbon containing molecules in cold molecular clouds show various levels of isotopic fractionation through multiple observations. To understand such effects, we have developed a new gas-grain chemical model with updated 13C fractionation…

Astrophysics of Galaxies · Physics 2020-10-07 Jean-Christophe Loison , Valentine Wakelam , Pierre Gratier , Kevin M. Hickson

Co-based superalloys in the Co-Al-W system exhibit coherent L12 Co3(Al,W) \gamma' precipitates in an fcc Co \gamma matrix, analogous to Ni3Al in Ni-based systems. Unlike Ni3Al however, experimental observations of Co3(Al,W) suggest that it…

Materials Science · Physics 2013-09-13 James E. Saal , Chris Wolverton

We present a detailed analysis of a H$_2$-rich, extremely strong intervening Damped Ly-$\alpha$ Absorption system (DLA) at $z_{\rm abs}=2.786$ towards the quasar J$\,$0843+0221, observed with the Ultraviolet and Visual Echelle Spectrograph…

Porous heteroatom-doped carbons are desirable for catalytic reactions due to their tunable physicochemical properties, low cost and metal-free nature. Herein, we introduce a facile general bottom-up strategy, so-called "cooking carbon in a…

Chemical Physics · Physics 2019-01-16 Jiang Gong , Jinshui Zhang , Huijuan Lin , Jiayin Yuan
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