Para-Aminobenzoic acid-capped hematite as an efficient nanocatalyst for solvent-free CO2 fixation under atmospheric pressure. Issue 5 (12th January 2022)

• Record Type: Journal Article
• Authors: Tudu, Gouri; Paliwal, Khushboo S.; Ghosh, Sourav; Biswas, Tanmoy; Koppisetti, Heramba V. S. R. M.; Mitra, Antarip; Mahalingam, Venkataramanan
• Is Part Of: Dalton transactions. Volume 51:Issue 5(2022)
• Page Start: 1918
• Page End: 1926
• Publication Date: 2022-01-12
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt03821d
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Efficient fixation of CO2 into epoxide to form cyclic carbonate is achieved utilizing para -aminobenzoic acid-capped hematite nanocatalyst. Abstract : Utilization of carbon dioxide by converting it into value-added chemicals is a sustainable remedy approach that stipulates abundant, cheap, non-toxic and efficient catalytic materials. In this study, we have demonstrated the use of para -aminobenzoic acid-capped hematite (PABA@α-Fe2 O3 ) as an efficient nanocatalyst for the conversion of epoxides to cyclic carbonates utilizing CO2 . The developed PABA@α-Fe2 O3 nanocatalyst along with a cocatalyst, tetrabutylammonium iodide (TBAI), was able to convert a variety of epoxide substrates into their corresponding cyclic carbonates under atmospheric pressure and solvent-free conditions. The efficient catalytic activity of the material is attributed to the synergistic effect between α-Fe2 O3 and the amine group of the PABA molecule present on the surface. Furthermore, the recyclability study and post-catalytic analysis revealed that the developed catalyst can be used for multiple catalytic cycles due to the stable and robust nature of the nanocatalyst. The choice of the PABA@α-Fe2 O3 nanocatalyst is indeed a sustainable approach from the CO2 capture and utilization point of view.