强金属支相互作用促进电子孔对在Au13/BiOCl接口:从量子动力学的洞察力
1Inner Mongolia Key Laboratory of Rare Earth Catalysis, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China.
The journal of physical chemistry letters
|January 8, 2025
概括
我们发现,Au13/BiOCl中更强的金属支相互作用 (MSI) 增强了电子转移,从而实现更好的光催化. 引入氧气空位 (OV) 显著加快了这一过程,有助于光催化剂设计.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学计算化学
- 光催化作用的光催化
背景情况:
- 金属支相互作用 (MSI) 对光催化剂性能至关重要.
- 了解电荷载体分离动态是设计高效光催化剂的关键.
- 在 bismuth氧化 (BiOCl) 上支的金 (Au13) 是有前途的光催化材料.
研究的目的:
- 调查MSI对光生成电荷载体分离在Au13/BiOCl中的影响.
- 阐明氧空位 (OV) 在调节MSI和电子转移中的作用.
- 为高性能光催化剂提供设计原则.
主要方法:
- 非adiabatic分子动力学模拟.
- 时间域密度函数理论 (TD-DFT).
- 具有和没有氧气空缺的Au13/BiOCl系统的计算建模.
主要成果:
- 从Au13到BiOCl的电子转移时间尺度取决于MSI强度.
- 氧空缺 (OV) 在Au13/BiOCl.中增强MSI和非adiabatic (NA) 合.
- 与原始系统相比,Au13/BiOCl与OV中的电子转移时间尺度减少了1.65的因素.
结论:
- 增强MSI可以促进光催化剂中的电子转移.
- 氧气空缺可以有效地加强MSI并加速电荷载体分离.
- 这项研究为设计先进的Au13/BiOCl光催化剂提供了宝贵的见解.
更多相关视频
相关概念视频
Complexation Equilibria: Factors Influencing Stability of Complexes
326
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
326
Metal-Semiconductor Junctions
291
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
291
Formation of Complex Ions
23.2K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.2K
Crystal Field Theory - Octahedral Complexes
26.1K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.1K
Protein-protein Interfaces
12.4K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
12.4K
Metal-Ligand Bonds
20.5K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.5K


