构建界面B-P结合桥以促进S-Scheme电荷迁移在异原子化碳化物同结体内,以获得高效的H2O光合作用
Shahid Khan1, Muhammad Adnan Qaiser1, Waqar Ahmad Qureshi1
1School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China.
ACS applied materials & interfaces
|January 17, 2025
概括
这项研究开发了一种新和的化碳化物同聚合物,用于高效的过氧化生产. 独特的B-P结合增强了电荷转移,显著提高了光催化性能.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 绿色化学 绿色化学
背景情况:
- 在光催化过程中,S模式异质连接对电荷分离有效.
- 弱的接口相互作用可以限制这些系统中的电荷迁移.
- 高效的过氧化生产对于各种化学应用至关重要.
研究的目的:
- 为增强过氧化 (H2O2) 光合作用构建一种新的S-方案碳化物 (CN) 均连接.
- 研究接口相互作用和电荷转移机制的作用.
- 使用B-CN/P-CN光催化剂实现高的H2O2产率.
主要方法:
- 制造 (B) 合CN和 (P) 合CN (B-CN/P-CN) 纳米板复合材料.
- 界面接触,光收获和载体寿命的表征.
- 密度函数理论 (DFT) 计算以阐明电荷转移机制.
主要成果:
- B-CN/P-CN同位点表现出紧密的界面接触和改善的可见光吸收.
- 观察到界面化学B-P结合,促进了加速的S-scheme电荷迁移.
- 最佳的H2O2产率达到2199.5μmol L-1 h-1,显著超过其他CN光催化剂.
结论:
- B-CN/P-CN同位结有效促进 H2O2 生产的界面电荷转移.
- 2e-氧降解反应是主导的途径,由同质连接促进.
- 这项工作强调了接口工程在设计用于太阳能转换的先进光催化剂方面的重要性.
关键词:
H2O2光合作用 H2O2光合作用接口连接桥梁的接口连接桥.在S-scheme的同质结合中.g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4g-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N4G-C3N-G-C3N-G-C3N-G-C3N-G-C不同原子的兴奋剂.更多相关视频
11:47The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
Published on: July 4, 2017
13.3K
13:56Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
7.6K
相关概念视频
03:35Hybridization of Atomic Orbitals II
31.8K
sp3d and sp3d 2 Hybridization
31.8K
01:34The Z-Scheme of Electron Transport in Photosynthesis
9.9K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
9.9K
01:04Hydrogen Bonds
7.9K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
7.9K
03:24Hybridization of Atomic Orbitals I
46.4K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
46.4K
02:38Valence Bond Theory and Hybridized Orbitals
18.8K
According to valence bond theory, a covalent bond results when: (1) an orbital on one atom overlaps an orbital on a second atom, and (2) the single electrons in each orbital combine to form an electron pair. The strength of a covalent bond depends on the extent of overlap of the orbitals involved. Maximum overlap is possible when the orbitals overlap on a direct line between the two nuclei.
A σ bond (single bond in a Lewis structure) is a covalent bond in which the electron density is...
A σ bond (single bond in a Lewis structure) is a covalent bond in which the electron density is...
18.8K
02:45Valence Bond Theory
31.8K
Overview of Valence Bond Theory
31.8K