Fig. 2: Photocatalytic performance in the batch reactor.

a CO rate of pristine In2O3 (down) and 1.0% BixIn2–xO3 nanocrystals (up) in catalyzing hydrogenation of CO2 under illumination. b CO rate as a function of Bi3+ content for various BixIn2–xO3 nanocrystals. c GC-MS plot of 13CO produced from 13CO2 over 1.0% BixIn2–xO3 nanocrystals. d CO rate as a function of absorption cutoff filter wavelength for 1.0% BixIn2–xO3 nanocrystals.