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相关概念视频

Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

14.2K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
14.2K
Intermolecular Forces03:13

Intermolecular Forces

56.1K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
56.1K
Ionic Crystal Structures02:42

Ionic Crystal Structures

14.0K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.0K
Hydration of Cement01:24

Hydration of Cement

171
Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
171
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

39.8K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
39.8K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

65.9K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
65.9K

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相关实验视频

Updated: May 14, 2025

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

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化Cs+和石墨烯之间相互作用的深度潜力.

Yangjun Qin1,2, Liuhua Mu3, Xiao Wan4

  • 1School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Langmuir : the ACS journal of surfaces and colloids
|April 29, 2025
PubMed
概括
此摘要是机器生成的。

一个新的深度神经网络模型准确地预测了水合离子 (Cs+) 和石墨烯之间的相互作用. 这项研究增强了对石墨烯膜吸附的理解,用于诸如放射性核酸去除等应用.

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
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相关实验视频

Last Updated: May 14, 2025

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

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Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
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科学领域:

  • 材料科学 材料科学 材料科学
  • 计算化学计算化学
  • 物理化学 物理化学

背景情况:

  • 化-π相互作用显著影响基于石墨烯的膜性能.
  • 对离子 (Cs+) 与石墨烯相互作用的有限理解阻碍了吸附研究.

研究的目的:

  • 开发一个深度神经网络潜力模型来预测Cs+-石墨烯相互作用.
  • 为了研究水合Cs+在石墨烯表面的吸附行为.

主要方法:

  • 开发了一个深度神经网络潜能函数,具有DFT级准确度.
  • 利用深层潜力模拟石墨烯表面溶液的特性.
  • 计算不同水分子数量的吸附能量和电荷.

主要成果:

  • 深潜能准确地预测了Cs+-石墨烯相互作用.
  • 发现水分子会削弱Cs+与石墨烯之间的相互作用.
  • 模拟显示了对水密度分布和离子动态的见解.

结论:

  • 开发的深潜力是研究石墨烯水合离子吸附的强大工具.
  • 这种方法为使用石墨烯膜的放射性核素管理提供了新的解决方案.