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Improving reactivity on an insulating surface is crucial due to their important applications in surface catalytic reactions. In this work, we carried out first-principles calculations to investigate the adsorption of O2 on a single-layer…

Materials Science · Physics 2017-09-20 Cequn Li , Jing Fan , Bin Xu , Hu Xu

The dissociation of a hydrogen molecule on MgO(001) films deposited on Mo(001) surface is investigated systematically using periodic density-functional theory method. The unusual adsorption behavior of heterolytic dissociative hydrogen…

Chemical Physics · Physics 2016-04-29 Zhenjun Song , Hu Xu

Water dissociation is of fundamental importance in scientific fields and has drawn considerable interest in diverse technological applications. However, the high activation barrier of breaking the O-H bond within the water molecule has been…

Materials Science · Physics 2023-03-15 Zhijing Huang , Zihan Yan , Guangdong Zhu , Xing Chen , Shuming Zeng , Xiuyun Zhang , Liang Zhao , Yusong Tu

The formation of highly reactive oxygen species (ROS) on metal oxide surfaces have attracted considerable interest due to their diverse applications. In this work, we have performed densi-ty-functional theory calculations to investigate the…

Chemical Physics · Physics 2016-08-18 Zhenjun Song , Hu Xu

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

In order to obtain a comprehensive understanding of both thermodynamics and kinetics of water dissociation on TiO2, the reactions between liquid water and perfect and defective rutile TiO2 (110) surfaces were investigated using ab initio…

Chemical Physics · Physics 2018-03-29 Huili Wang , Zhenpeng Hu , Hui Li

The dehydrogenation reaction of methanol on metal supported MgO(100) films has been studied by employing periodic density functional calculations. As far as we know, the dehydrogenation of single methanol molecule over inert oxide…

Chemical Physics · Physics 2016-09-04 Zhenjun Song , Hu Xu

Hydrogen produced from the photocatalytic splitting of water is one of the reliable alternatives to replace the polluting fossil and the radioactive nuclear fuels. Here, we provide unequivocal evidence for the existence of blue- and…

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

The formation of a hydroxylated native oxide layer on Si(001) under wet conditions is studied by means of first principles molecular dynamics simulations. Water molecules are found to adsorb and dissociate on the oxidised surface leading to…

Materials Science · Physics 2009-04-15 Lucio Colombi Ciacchi , Daniel J. Cole , Mike C. Payne , Peter Gumbsch

Water absorption and dissociation processes on pristine low-index TiO$_2$ interfaces are important but poorly understood outside the well-studied anatase (101) and rutile (110). To understand these, we construct three sets of machine…

Materials Science · Physics 2023-03-15 Zezhu Zeng , Felix Wodaczek , Keyang Liu , Frederick Stein , Jürg Hutter , Ji Chen , Bingqing Cheng

Photocatalytic water splitting reaction on TiO2 surface is one of the fundamental issues that bears significant implication in hydrogen energy technology and has been extensively studied. However, the existence of the very first reaction…

Chemical Physics · Physics 2011-11-15 Shijing Tan , Yongfei Ji , Yang Wang , Jin Zhao , Aidi Zhao , Bing Wang , Yi Luo , Jinlong Yang , J. G. Hou

We show that the water dissociation reaction H$_2$O$\rightarrow$OH+H in the confined environment of MOF-74 channels can be precisely controlled by the addition of the noble gas He. Elucidating the entire reaction process with ab initio…

Materials Science · Physics 2016-07-21 S. Zuluaga , E. M. A. Fuentes-Fernandez , K. Tan , J. Li , I. J. Chabal , T. Thonhauser

Water dissociation represents one of the most important reactions in catalysis, essential to the surface and nano sciences [e.g., Hass et al., Science, 1998, 282, 265-268; Brown et al., Science 2001, 294, 67-69; Bikondoa et al., Nature…

Titanium dioxide (TiO$_2$) plays a central role in the study of artificial photosynthesis, owing to its ability to perform photocatalytic water splitting. Despite over four decades of intense research efforts in this area, there is still…

Materials Science · Physics 2016-07-28 Christopher E. Patrick , Feliciano Giustino

A single water molecule has nothing special. However, macroscopic water displays many anomalous properties at the interface, such as a high surface tension, hydrophobicity and hydrophillicity. Although the underlying mechanism is still…

Materials Science · Physics 2016-03-15 Wei Hu , Zhenyu Li , Jinlong Yang

The detection, removal and reduction of hydrogen peroxide is of significant importance for its increasing application in the areas of environment, food, electrochemistry and clinical laboratory. Herein the dissociative adsorption behavior…

Chemical Physics · Physics 2017-12-19 Zhenjun Song , Bin Zhao , Qiang Wang , Peng Cheng

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

The adsorption and dissociation of isolated water molecule on Zr(0001) surface are theoretically investigated for the first time by using density-functional theory calculations. Two kinds of adsorption configurations with almost the same…

Materials Science · Physics 2015-05-27 Shuang-Xi Wang , Ping Zhang , Peng Zhang , Jian Zhao , Shu-Shen Li

We investigate energetic stability and dissociation dynamics of water adsorption at the LaAlO3 surface of the n-type LaAlO3/SrTiO3 (LAO/STO) interface and its effect on electronic properties of the interface by carrying out first-principles…

Materials Science · Physics 2015-06-15 Yun Li , Jaejun Yu
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