相关实验视频

Updated: Jun 10, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

在MoS₂的第八组单个原子上解读激活机制

Hengyue Xu¹, Fupeng Zhang², LiuRu Fang³

¹Department of Chemistry, Tsinghua University, Beijing 100084, China.

Inorganic chemistry

|October 11, 2024

概括

在MoS2 (Os@MoS2) 上定的显示出对可持续氨生产的优越激活. 这种催化剂表现出最低的降解反应超电位,使其对固定技术非常有效.

科学领域:

催化剂是一种催化剂.
材料科学材料科学材料科学
计算化学的计算化学

背景情况:

(N2) 激活对于氨合成和固定至关重要.
开发高效的催化剂是可持续工业过程的关键.

研究的目的:

研究MoS2上的VIII组单原子催化剂对N2的激活和减少.
确定增强固技术的有希望的催化剂.

主要方法:

密度函数理论 (DFT) 的计算.
电子结构的分析 (静电电位图,电子定位函数,自旋密度,电荷转移).

主要成果:

在MoS2 (Os@MoS2) 上定的显示出最高的N2激活和最低的降解反应 (NRR) 超电位 (0.624 V).
在Os@MoS2中的"电子漂移"效应削弱了NN三重键,以低的N-N解离能障碍 (0.82 eV) 促进激活.
在第八组催化剂中观察到N2键能和NRR过量的对角趋势.

结论:

Os@MoS2 是一个高效的催化剂,用于的激活和减少.
轨道相互作用和电子/几何因素对于催化剂设计至关重要.
Os@MoS2显示了可持续氨合成的巨大潜力.

更多相关视频

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Published on: May 12, 2023

相关概念视频

Lewis Structures of Molecular Compounds and Polyatomic Ions

Lewis Structures of Molecular Compounds and Polyatomic Ions

To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:

Exceptions to the Octet Rule

Exceptions to the Octet Rule

Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:

Lewis Symbols and the Octet Rule

Lewis Symbols and the Octet Rule

Chemical bonds are complex interactions between two or more atoms or ions, which reduce the potential energy of the molecule. Gilbert N. Lewis developed a model called the Lewis model that simplified the depiction of chemical bond formation and provided straightforward explanations for the chemical bonds seen in most common compounds.

Molecular Orbital Theory II

Molecular Orbital Theory II

Molecular Orbital Energy Diagrams

VSEPR Theory and the Effect of Lone Pairs

VSEPR Theory and the Effect of Lone Pairs

Effect of Lone Pairs of Electrons on Molecule Geometry

Covalent Bonding and Lewis Structures

Covalent Bonding and Lewis Structures

Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.