催化作用
光催化
共价键
阳光
炔丙基
浸出(土壤学)
介孔材料
化学
光化学
催化循环
共价有机骨架
材料科学
化学工程
有机化学
土壤科学
土壤水分
天文
工程类
物理
环境科学
作者
Priyanka Sarkar,Arpita Hazra Chowdhury,Surajit Biswas,Aslam Khan,Sk. Manirul Islam
标识
DOI:10.1016/j.mtchem.2021.100509
摘要
We have demonstrated the efficient synthesis of Pd(II)-based 2D mesoporous covalent organic framework (COF) along with a small amount of Pd(0), which is characterized by different characterization tools. These studies suggest that this material with low bandgap energy (Eg) of 1.73 eV can exhibit great photocatalytic activity toward CO2 fixation reaction. Therefore, we have applied the Pd(II)-loaded COF as a new and effective photocatalyst for the preparation of oxazolidinone through the chemical fixation of CO2. The reaction takes place in green solvent (H2O) in absence of any base and under the sunlight at atmospheric pressure of CO2 without using any cocatalyst. The reaction does not happen in the dark. In this context, we showed that a turnover number (TON) of 3.392 × 103 can be achieved using the catalytic cycle under sunlight. The light dependency of the reaction is also checked by a control experiment via light modulation between light on and off. Furthermore, the catalyst shows efficient reusability for multiple reaction cycles, and also the heterogeneity test of the material suggests minimal active metal leaching during the catalysis reaction cycles. These results for the photocatalytic synthesis of oxazolidinone by CO2 incorporation over COF under sunlight open a new environment-friendly green pathway for the formation of oxazolidinones.
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