Fig. 4

FT-IR and UV-vis images: (a) FT-IR spectrum of ZnO and ZDMA; (b) FT-IR spectrum of EP; (c) FT-IR spectrum of EG and MEG; (d) UV-vis spectrum of ZDMA, EG, and MEG.
FT-IR and UV-vis images: (a) FT-IR spectrum of ZnO and ZDMA; (b) FT-IR spectrum of EP; (c) FT-IR spectrum of EG and MEG; (d) UV-vis spectrum of ZDMA, EG, and MEG.