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Gold incorporated hematite nanocatalyst for solvent-free CO2 fixation under atmospheric pressure

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Abstract

We have developed an efficient one-pot synthesis strategy for the preparation of hematite (α-Fe2O3) and gold-integrated hematite (Au/α-Fe2O3) nanocatalysts. The nanostructured hematite along with tetrabutylammonium iodide (TBAI) has emerged as a proficient catalyst-combination for the reaction between carbon dioxide (CO2) and epoxide to form cyclic carbonate with 77% conversion under atmospheric CO2 pressure and solvent-free conditions. The catalytic activity of hematite further improved on the incorporation of a miniscule amount of gold (Au) into the hematite system. The as-prepared Au/α-Fe2O3 nanocatalyst with TBAI is found to be very efficient for the CO2 fixation reaction with 91% conversion under the optimized reaction conditions. The excellent catalytic activity of Au/α-Fe2O3 is attributed to the synergistic effect between α-Fe2O3 and Au species for the efficient fixation of CO2. Furthermore, the recyclability and post catalytic analysis imply the robust nature of the heterogeneous Au/α-Fe2O3 nanocatalyst.

Graphical abstract: Gold incorporated hematite nanocatalyst for solvent-free CO2 fixation under atmospheric pressure

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Supplementary files

Article information


Submitted
19 Mar 2020
Accepted
17 Jun 2020
First published
18 Jun 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Gold incorporated hematite nanocatalyst for solvent-free CO2 fixation under atmospheric pressure

G. Tudu, S. Ghosh, T. Biswas and V. Mahalingam, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ01377C

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