fig19
Figure 19. (A) Photocatalytic degradation of HCHO at different temperatures at 45 min. (B) Photograph of large-scale photocatalytic devices[150]. Copyright 2018, Elsevier Inc. (C) Photo-thermocatalytic performance of pollutant degradation. (D) Representation of the formation of CeO2/CeN nanorods[151]. Copyright 2018, Royal Society of Chemistry.