相关实验视频

Updated: Jul 28, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

胺连接的共价有机框架,用于促进光催化生产

Xinyu Guan¹, Yunyang Qian¹, Xiyuan Zhang¹

¹Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China.

Angewandte Chemie (International ed. in English)

|May 31, 2023

概括

高度稳定的酶氨酸结合的共价有机框架 (En-COFs) 与 imine-linked COFs (Im-COFs) 相比,显示出显著增强的光催化活性,用于生产. 这些En-COF为先进的光催化应用提供了一个有前途的平台.

科学领域:

材料科学材料科学材料科学
化学化学化学
纳米技术纳米技术

背景情况:

联有机框架 (COF) 由于其可调节的结构,对光催化有希望.
胺基联结COF (Im-COF) 在稳定性和性能上表现出局限性.
对于光催化应用,需要更坚固,更高效的COF材料.

研究的目的:

为光催化合成和评估高度稳定的氨酸结合COF (En-COFs).
为了比较En-COFs与传统Im-COFs的光催化性能.
调查结构变化及其对光催化活性的影响.

主要方法:

合成与胺相关的COF (En-COF).
后修改因胺结合COFs (Im-COFs) 以形成氨酸结合COFs (Qu-COFs).
评估可见光驱动的生产活动.

主要成果:

与异构体Im-COF相比,En-COFs显著改善了生产活动 (44-1078倍).
增强的光采集,激子解离和化学稳定性有助于En-COFs的卓越性能.
经过修改后的Qu-COF显示出比Im-COF更好的活性,但活性低于En-COF.

结论:

En-COFs代表了可见光驱动光催化剂的高度稳定和高效的平台.
酶氨酸连接优于胺氨酸连接,可以增强光催化的产生.
En-COFs为开发用于可持续能源应用的先进材料提供了一个有希望的途径.

关键词:

协价有机框架协价有机框架氨连接氨连接刺激效应刺激效应刺激效应光催化作用的光催化

更多相关视频

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

相关概念视频

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...

Reduction of Alkenes: Catalytic Hydrogenation

Reduction of Alkenes: Catalytic Hydrogenation

Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...