Fig. 3From: Comparative study of photocatalytic activities of hydrothermally grown ZnO nanorod on Si(001) wafer and FTO glass substratesTEM images and the corresponding EDX spectra of ZnO nanorods grown for 4 h: a and c on the Si(001) wafer and b and d on the FTO glass substrate. We obtained these images and spectra of the nanorods after separating them from their respective substrates by using an ultrasonicatorBack to article page