Copper-based bio-MOF/GO with Lewis basic sites for CO۲ fixation into cyclic carbonates

Several measures, including crude oil recovery improvement and carbon dioxide (CO۲) conversion into valuable chemicals, have been considered to decrease the greenhouse effect and ensure a sustainable low-carbon future. The CO۲ fixation has been introduced as a principal solution to these challenges.۱,۲ In present workk for the first time, bio-MOF(Cu)/GO nanocomposites have been used as catalytic agents for this reaction. In view of the attendance of amine groups, biological MOFs with NH۲ functional group as Lewis base sites protruding on the channels' internal surface. The Bio-MOF(Cu)/۲۰%GO performs efficaciously in CO۲ fixation, leading to more than ۹۹.۹% conversion with TON=۵۲۵ via a solvent-free reactions under a ۱ bar CO۲ atmosphere. It has been shown that these frameworks are highly catalytic due to the Lewis basic sites i.e. NH۲, pyrimidine and C═O groups. Besides, the Lewis base active sites exert synergic effects and render Bio-MOF(Cu)/۱۰%GO nanostructures highly efficient catalysts, significantly accelerating reaction. Bio-MOFs can be stabilized in reactions using GO with oxygen-containing functional groups that contribute as efficient substitutes, leading to an expeditious reaction speed and facilitating substrate absorption.

کلیدواژه ها:

Metal–organic framework ، CO۲ fixation ، Lewis basic sites ، Graphen oxide.