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通过连续流合成,设计β-ketoenamine COF的物理性质和光催化活性

Astha Singh¹, Rituporn Gogoi¹, Kajal Sharma¹

¹School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, 175005, India.

|June 6, 2024

概括

连续流合成使共价有机框架 (COFs) 的工程成为可能,以增强光催化. 微反应器中的流量变化优化了COF的性能,以有效地去除污染物,证明了批量方法的优越替代方案.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

配合骨干的共价有机框架 (COF) 是无金属,可见光活性,异质的光催化剂.
连续流合成为COF生产提供了传统批量工艺的高效替代方案.

研究的目的:

为了证明β-氨胺COF的物理性质,吸附和催化活动的工程.
调查单体流量和微反应器设计在连续流合成对COF特征的影响.

主要方法:

在一个S形微反应器中,使用连续流程过程和变化的单体流速 (100,500,1000μLmin-1) 合成β-基胺COF.
对COF结晶度,表面积,光物理性质,吸附能力 (MB),光电流和电荷转移电阻的表征.
对甲蓝 (MB) 去除的光催化活性的评估.

主要成果:

随着流速的增加,COF结晶度和表面积增加,在1000μLmin-1 (S-1000) 时达到1119 m2g−1.
光物理特性随着合成条件的变化而显著变化.
S-1000表现出最高的MB吸附率;S-500显示出最高的光电流,最低的电荷重组和最低的电荷转移电阻,确定它是最佳的光催化剂.
连续流光催化与S-500进一步增强的MB移除.

结论:

连续流合成为定制的光催化应用提供了对COF属性的精确控制.
在优化流量条件下合成的S-500 COF是甲基蓝降解的高效光催化剂.
在合成和光催化过程中实现连续流量,提高了污染物清除的效率.

关键词:

连续流合成连续流合成协价有机框架协价有机框架结晶性是指结晶性是指结晶性.流入式光催化剂的光催化作用无金属催化剂是一种无金属催化剂.自动组装自动组装

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