“…In the process of CdO–OH degradation, an amino group was obviously desorbed at 1523 and 3164 cm −1 , which might be due to the rejection of TC caused by electron redistribution after illumination. 27,29 In addition, other absorption peaks were not obvious, and only some of the C–H peaks (1120–1000 cm −1 ) were enhanced. On the contrary, a large number of group strengths increased during the photocatalytic degradation process of N-doped LC-CdO; in particular, the increased peaks at 1550–1500 and 1344 cm −1 were attributed to C–N and N–H, which might be related to the binding of doped N element on the surface of CdO and the detached nitrogen-containing groups in TC.…”