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基于三的共价有机框架,用于高效的光催化过氧化生产

Zhenwei Zhang¹, Qi Zhang², Yuxin Hou¹

¹College of Chemistry, Jilin University, Changchun, 130012, P.R. China.

Angewandte Chemie (International ed. in English)

|July 1, 2024

概括

为太阳能转换合成了两个新的二维共价有机框架 (2D-COFs). COF-JLU51表现出异常的过氧化产量,而COF-JLU52在醇/水系统中实现了高产量.

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
能源转换能源转换

背景情况:

由于可调节的结构,二维共价有机框架 (2D-COF) 对太阳能转化为化学能量的转化具有前景.
开发高效和稳定的无金属光催化剂对于可持续的能源解决方案至关重要.

研究的目的:

设计和合成基于酸的新型2D-COF材料.
为了评估它们在光催化式太阳能转化为化学能量的性能.
为了阐明底层的光催化机制.

主要方法:

合成了两个新的二维COF:COF-JLU51和COF-JLU52.
它们的结构性,晶体性,稳定性和光电性质的表征.
在模拟的阳光下进行H2O2生产和醇氧化的光催化实验.
实验和理论研究,以了解反应机制.

主要成果:

COF-JLU51实现了超过4200μmolg-1h-1的H2O2生产率,并且具有出色的可重复使用性.
COF-JLU52产生了7624.7μmolg-1h-1的醇氧化,其明显量子产量为18.2%.
光催化过程涉及间接的O2降解 (ORR) 和H2O氧化 (WOR).

结论:

基于的新型二维COF (COF-JLU51和COF-JLU52) 已成功合成.
这些材料在太阳能转化为化学能量的过程中表现出卓越的光催化性能.
这些发现突显了它们对未来光催化应用的潜力.

关键词:

协价有机框架协价有机框架过氧化是一种过氧化.没有金属的聚合物.光催化作用的光催化特里斯 (Tris) 是一种三醇 (triazole) 氨酸.

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