相关实验视频
Updated: Feb 11, 2026

08:14
Ammonia Synthesis at Low Pressure
Published on: August 23, 2017
27.4K
甲联体调制的银催化剂,具有针对性的结合亲和力,用于选择性酸盐转化为氨的转化
Longcheng Zhang1,2, Yuan Liu2, Ling Li3
1School of Chemical Engineering, Sichuan University, Chengdu, China.
Nature communications
|February 9, 2026
概括
使用特定连接体的分子界面工程显著提高了电催化酸盐减少中的氨选择性. 这一战略提高了可持续生产氨的催化剂性能.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 在电催化酸盐还原中实现高氨选择性是具有挑战性的,因为反应途径相互竞争.
- 控制含中间体的化过程中的选择性决定性步骤至关重要.
研究的目的:
- 开发一种分子接口工程策略,以提高电催化酸盐减少中的氨选择性.
- 确定有效的连接物,调节银纳米立方体表面上关键中间体的界面结合和激活.
主要方法:
- 银纳米立方体表面的功能化与醇结的芳香配体.
- 系统地改变连接体电子特性以优化性能.
- 在现场进行电化学表征和理论模拟.
- 在膜电极组装电解仪中的验证.
主要成果:
- 鉴定4-甲) 甲作为一种高效的连接物.
- 氨的显著增加 法拉代的效率从50.8%提高到98.9%.
- 在 -0.63 V 和 RHE 之间,达到 14,366.1 μg h−1 cm−2 的高氨产率.
- 证明促进水激活和加速*HNO中间化.
结论:
- 分子接口工程为电催化酸盐减少中的选择性控制提供了有效的策略.
- 4-甲基甲改性通过优化界面结合和中间激活来增强氨产量.
- 该战略表明,在电解系统中选择性酸盐转化具有实际可行性.
相关概念视频
Ligand Binding Sites
15.2K
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
15.2K
Ligand Binding Sites
8.9K
8.9K
Ligand Binding and Linkage
5.6K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
5.6K
Ligand Binding and Linkage
4.2K
4.2K
Metal-Ligand Bonds
24.4K
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...
24.4K
The Equilibrium Binding Constant and Binding Strength
15.2K
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
15.2K

