Fig. 8

Impact of environments on the structure of Co3O4 catalysts, a the atomic structure of a [211] oriented Co3O4 catalyst with spinel structure fabricated by the high throughput printing process after an exposition to technical air at atmospheric pressure at 400 °C for 2 h. b Sample as in a but exposed in situ to 1 mbar of H2O vapor at 400 °C. c The related nano-diffraction patterns showing substantial peak broadening after the exposure to H2O vapor