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Water desalination through nanopores has been shown to be a promising alternative to the currently water purification processes. In spite the results in this direction obtained by means of computational simulations were animating there are…

The electronic properties and optical response of ice and water are intricately shaped by their molecular structure, including the quantum mechanical nature of hydrogen atoms. In spite of numerous studies appeared over decades, a…

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

Nuclear quantum effects play critical roles in a variety of molecular processes, especially in systems that contain hydrogen and other light nuclei, such as water. For water at ambient conditions, nuclear quantum effects are often…

Chemical Physics · Physics 2023-09-12 Richard C. Remsing

Water autoionization plays a critical role in determining pH and properties of various chemical and biological processes occurring in the water mediated environment. The strikingly unsymmetrical potential energy surface of the dissociation…

Chemical Physics · Physics 2023-12-29 Ling Liu , Yingqi Tian , Chungen Liu

In this work we examine the nucleation from NaCl aqueous solutions within nano-confined environments, employing enhanced sampling molecular dynamics simulations integrated with machine learning-derived reaction coordinates. Through our…

Chemical Physics · Physics 2024-08-26 Ruiyu Wang , Pratyush Tiwary

Water isotope separation, specifically separating heavy from light water, is a socially significant issue due to the usage of heavy water in applications such as nuclear magnetic resonance, nuclear power, and spectroscopy. Separation of…

Chemical Physics · Physics 2024-11-14 Jinu Jeong , Chenxing Liang , Narayana Aluru

Understanding the reactivity and spectroscopy of aqueous solutions at the atomistic level is crucial for the elucidation and design of chemical processes. However, the simulation of these systems requires addressing the formidable…

Chemical Physics · Physics 2017-02-28 Ondrej Marsalek , Thomas E. Markland

Modeling electronic systems is an important application for quantum computers. In the context of materials science, an important open problem is the computational description of chemical reactions on surfaces. In this work, we outline a…

Life on Earth depends upon the dissolution of ionic salts in water, particularly NaCl. However, an atomistic scale understanding of the process remains elusive. Simulations lend themselves conveniently to studying dissolution since they…

Chemical Physics · Physics 2022-11-09 Niamh O'Neill , Christoph Schran , Stephen J. Cox , Angelos Michaelides

Upon hydrogen bond formation, electronic charge density is transferred between the donor and acceptor, impacting processes ranging from hydration to spectroscopy. Here we use ab initio path integral simulations to elucidate the role of…

Chemical Physics · Physics 2018-11-28 Christoph Schran , Ondrej Marsalek , Thomas E. Markland

Water molecules adsorbed on inorganic substrates play an important role in several technological applications. In the presence of light atoms in adsorbates, nuclear quantum effects (NQE) influence properties of these systems. In this work,…

Chemical Physics · Physics 2017-12-06 Yair Litman , Davide Donadio , Michele Ceriotti , Mariana Rossi

Understanding the dynamic nature of the semiconductor-water interface is crucial for developing efficient photoelectrochemical water splitting catalysts, as it governs reactivity through charge and mass transport. In this study, we employ…

Chemical Physics · Physics 2024-05-03 Sagarmoy Mandal , Tushar Kanti Ghosh

Nanoconfinement effects on water dissociation and reactivity remain controversial, despite their importance to understand the aqueous chemistry at interfaces, pores, or aerosols. The pKw in confined environments has been assessed from…

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

At room temperature, the quantum contribution to the kinetic energy of a water molecule exceeds the classical contribution by an order of magnitude. The quantum kinetic energy (QKE) of a water molecule is modulated by its local chemical…

Chemical Physics · Physics 2020-01-22 Lu Wang , Michele Ceriotti , Thomas E. Markland

Isotopic substitution, which can be realized both in experiment and computer simulations, is a direct approach to assess the role of nuclear quantum effects on the structure and dynamics of matter. Yet, the impact of nuclear quantum effects…

Chemical Physics · Physics 2024-12-03 Nore Stolte , János Daru , Harald Forbert , Jörg Behler , Dominik Marx

The uptake and sorption of charged molecules by responsive polymer membranes and hydrogels in aqueous solutions is of key importance for the development of soft functional materials. Here we investigate the partitioning of simple monoatomic…

Soft Condensed Matter · Physics 2020-03-24 Matej Kanduč , Won Kyu Kim , Rafael Roa , Joachim Dzubiella

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

Nanoconfined water plays a key role in nanofluidics, electrochemistry, and catalysis, yet its reactivity remains a matter of debate. Prior studies have reported both enhanced and suppressed water self-dissociation relative to the bulk, but…

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