Carbon nanotubes @Cu/Ni loaded BFO for photothermal catalytic conversion of CO2 by H2O

Abstract

Bismuth ferrite (FeBiO3, BFO) has excellent photocatalytic activity and a reasonable bandgap width (approximately 2.1 eV), making it a promising material for CO2 catalytic reduction research. In order to enhance the CO2 catalytic reduction performance of BFO, Cu/Ni (molar ratio = 6:5) metal particles were supported on carbon nanotubes (CNTs) at a fixed mass ratio of 38.6% in this study, and it was discovered that adding polyvinylpyrrolidone (PVP) might improve metal particle dispersion. Following that, CNTs @Cu/Ni were supported on hydrothermally produced BFO at mass ratios of 1%, 3%, 5%, and 7% to produce BFO-CNTs @Cu/Ni ternary composites. We investigated its CO2 catalytic reduction capability under photothermal and mild settings and discovered that BFO-3% CNTs @Cu/Ni had the greatest CO2 catalytic conversion efficiency (CH4 yield = 24.2 mol g−1 h−1). This is due to the fact that BFO-CNTs @Cu/Ni have superior light absorption and carrier separation efficiency than pure BFO.