ZnO is known as a potential catalyst for electrochemical ORR process. It has been hypothesized by Pilbath and Sziraki that spontaneous chemical reduction of O2 can happen on a defective ZnO/Zn(OH)2 surface having excess Zn in the form of interstitial defects leading to a space charge layer at its surface.(35) Hence, metallic Zn can act as electron donor and O2 can get physiosorbed or chemisorbed on its surface. Moreover, from ab initio DFT calculations, the adsorption of O2 on the ZnO surface is predicted to be facilitated by charge transfer due to excess charge present on the polar surface of ZnO, leading to the formation of chemical bond. Although such predictions exist, a clear understanding is lacking. To understand this passivating ZnO formation is the electrochemical effect, or this is a chemical process occurring on the zinc surface (the facilitation of ZnO formation) Raman spectroscopy was performed using a 532 nm wavelength light source. 50 mg of Zn powder is dispersed in 50 μL of 1 M KOH. The dispersion is divided into two parts which are kept in O2 and N2 environments. The rapid growth of ZnO on the Zn surface kept in alkaline solution, in the presence of O2, is confirmed by Raman spectroscopy analysis, Fig. A. From the obtained data, it can be noticed that, there are peaks at 330, 407, 425 and 557 cm -1 corresponding to E2H-E2L, E1 (TO), E2H, and A1 (LO), respectively. The peak at 330 cm -1 corresponds to E2H-E2L which has predominately A1 symmetry. The phonon mode at 407 cm -1 corresponds to E1 (TO) is the characteristic wurtzite ZnO. The most distinct and intense peak at around 425 cm -1 corresponds to the nonpolar high-frequency optical phonon E2 mode (E2H), which is associated with oxygen movement and is characteristic of the wurtzite structure, and the red shift in frequency is due to structural defects in the ZnO. The dominant Raman peak around ~560 cm -1 , attributed to the surface optical (SO) phonon mode of ZnO, indicates interfacial defects and disorder. These peaks are characteristic peaks of defective ZnO that are very prominent in O2 environment. This indicates that ZnO phase predominantly develops in O2 atmosphere in comparison to the N2 indicating the O2 undergoing reduction and facilitating the ZnO formation.