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The observed reactivity of MgO with water is in apparent conflict with theoretical calculations which show that molecular dissociation does not occur on a perfect (001) surface. We have performed ab-initio total energy calculations which…

mtrl-th · Physics 2009-10-28 K. Refson , R. A. Wogelius , D. G. Fraser , M. C. Payne , M. H. Lee , V. Milman

We present results of classical dynamics calculations, performed to study the photodissociation of water in crystalline and amorphous ice surfaces at a surface temperature of 10 K. Dissociation in the top six monolayers is considered.…

Astrophysics · Physics 2009-11-11 Stefan Andersson , Ayman Al-Halabi , Geert-Jan Kroes , Ewine F. van Dishoeck

The atomic scale insights into the interaction of water with oxide surface are essential for elucidating the mechanism of physiochemical processes in various scientific and practical fields, since the water is ubiquitous and coats…

Chemical Physics · Physics 2017-12-12 Zhenjun Song , Qiang Wang

The interaction of water with $\alpha$-alumina (i.e. $\alpha$-Al$_{2}$O$_{3}$ surfaces is important in a variety of applications and a useful model for the interaction of water with environmentally abundant aluminosilicate phases. Despite…

Chemical Physics · Physics 2017-11-15 Jonas Wirth , Harald Kirsch , Sebastian Wlosczyk , Yujin Tong , Peter Saalfrank , R. Kramer Campen

Gold nanoparticles are unique electrocatalysts for oxygen reduction, carbon dioxide reduction, and alcohol oxidation. Electrocatalytic processes are influenced by the interaction with the solvent, yet the direct investigation of the…

The hydrated electron ($e_{aq}^-$), a key species in radiation chemistry, is traditionally modeled as an interior electron confined within a solvent cavity and stabilized by electrostatic interactions. However, this picture fails to account…

Chemical Physics · Physics 2025-08-06 Y. Sajeev

Photoionization by high-energy photons creates nonthermal electrons with a broad range of energies that heat and chemically transform the atmospheres of planets. The specifics of the interactions are notably different when the gas is atomic…

Earth and Planetary Astrophysics · Physics 2025-06-17 Antonio García Muñoz , Ewan Bataille

Photocatalytic nitrogen reduction under ambient conditions represents a promising pathway toward sustainable ammonia production. However, the fundamental mechanisms, particularly the role of photogenerated charge carriers and their…

Materials Science · Physics 2026-04-13 Manoj Dey , Ritesh Kumar , Abhishek Kumar Singh

The 248nm and 193nm photodissociation of submonolayer quantities of CH$_3$Br and CH$_3$I adsorbed on thin layers of n-hexane indicate that the dissociation is caused by dissociative electron attachment from sub-vacuum level photoelectrons…

Chemical Physics · Physics 2009-11-13 E. T. Jensen

The ultraviolet (UV) photodissociation of amorphous water ice at different ice temperatures is investigated using molecular dynamics (MD) simulations and analytical potentials. Previous MD calculations of UV photodissociation of amorphous…

Chemical Physics · Physics 2010-05-21 C. Arasa , S. Andersson , H. M. Cuppen , E. F. van Dishoweck , G. -J. Kroes

Recent experimental reports on in-plane proton conduction in reduced graphene oxide (rGO) films open a new way for the design of proton exchange membrane essential in fuel cells and chemical filters. At high humidity condition, water…

Materials Science · Physics 2018-09-19 Gum-Chol Ri , Jin-Song Kim , Chol-Jun Yu

Photocatalytic water splitting can produce hydrogen in an environmentally friendly way and provide alternative energy sources to reduce global carbon emissions. Recently, monolayer fullerene networks have been successfully synthesized [Hou…

Materials Science · Physics 2022-12-22 Bo Peng

Due to the energy supply pressure caused by non-renewable fuels as well as the environment-related issues, the efficient conversion of solar-chemical energy via photo-induced water splitting is one of the promising strategies to address the…

Chemical Physics · Physics 2021-03-23 Zhexu Xi

We demonstrate an optical-fiber based source of polarization entangled photon-pairs with improved quality and efficiency, which has been integrated with off-the-shelf telecom components and is, therefore, well suited for quantum…

Quantum Physics · Physics 2007-05-23 Xiaoying Li , Chuang Liang , Kim Fook Lee , Jun Chen , Paul L. Voss , Prem Kumar

Core-excitation of water ice releases many different molecules and ions in the gas phase. Studying these desorbed species and the underlying mechanisms can provide useful information on the effects of X-ray irradiation in ice. We report a…

Chemical Physics · Physics 2020-10-20 R. Dupuy , G. Féraud , M Bertin , C. Romanzin , L. Philippe , T. Putaud , X. Michaut , R. Cimino , V. Baglin , J. -H. Fillion

Temporal evolution of transient absorption spectra for pre-solvated electron (e-) generated by biphotonic (200 nm) ionization of liquid H2O and D2O has been studied on femto- and pico- second time scales. These spectra were obtained in the…

Chemical Physics · Physics 2007-05-23 Rui Lian , Robert A. Crowell , Ilya A. Shkrob

Photosynthetic water oxidation is a fundamental process that sustains the biosphere. A Mn$_{4}$Ca cluster embedded in the photosystem II protein environment is responsible for the production of atmospheric oxygen. Here, time-resolved x-ray…

The HDO/H2O ratio in interstellar gas is often used to draw conclusions on the origin of water in star-forming regions and on Earth. In cold cores and in the outer regions of protoplanetary disks, gas-phase water comes from photodesorption…

Astrophysics of Galaxies · Physics 2015-03-11 Carina Arasa , Jesper Koning , Geert-Jan Kroes , Catherine Walsh , Ewine F. van Dishoeck

We address polarization-induced renormalization of molecular levels in solid-state based single-molecule transistors and focus on an organic conjugate molecule where a surprisingly large reduction of the addition energy has been observed.…

Mesoscale and Nanoscale Physics · Physics 2010-05-04 Kristen Kaasbjerg , Karsten Flensberg

The present study experimentally demonstrated that solid H2O is formed through the surface reaction OH + H2 at 10 K. This is the first experimental evidence of solid H2O formation using hydrogen in its molecular form at temperatures as low…

Astrophysics of Galaxies · Physics 2012-03-29 Y. Oba , N. Watanabe , T. Hama , K. Kuwahata , H. Hidaka , A. Kouchi