Fig. 5: In situ DRIFTS experiments of CO₂ adsorption and CO₂ hydrogenation.

a CO₂-TPD profiles. b In situ DRIFTS spectra for the adsorption of CO₂ on 1.0% Bi_xIn_2–xO₃ nanocrystals (up) and pure In₂O₃ (down). c In situ DRIFTS spectra of surface species under reaction conditions on 1.0% Bi_xIn_2–xO₃ nanocrystals (up) and pure In₂O₃ (down).