“…In the FTIR spectrum of PEO, the peaks at 3441 and 2883 cm –1 referred to the functional groups of stretching -OH and CH sp 3 , respectively . The organic functionality peaks of bending CH 2 , stretching C–O–C, bending C–H, and stretching C–C were located at 1445, 1106, 958, and 849 cm –1 , respectively. , In the presence of ZnO in PEO nanofibers, there was an additional peak observed at a wavelength of 438 cm –1 corresponding to the stretching vibration of Zn–O. , Meanwhile, the presence of ZnS in PEO nanofibers was indicated by the Zn-S stretching vibration peak at 610 cm –1 . Furthermore, the stretching vibration peak of Zn(O,S) was found at 554 cm –1 in between those of ZnO and ZnS peaks.…”