Fig. 4: 1H NMR spectra of ZnO nanorods before and after exposure to CO2.
From: Active bridging hydride species in ZnO nanorods originated from hydroxyl and oxygen vacancy
CO2 (1000 mbar) was introduced to ZnO nanorods at 100 °C (a), 150 °C (b), 200 °C (c), and 250 °C (d) before the acquisition of the 1H NMR spectra. ‘ZnOZn-H-Zn’ represents (ZnO-300-vac)-SW-200-vac sample discussed in the above sections. Recycle delays of 5 s were used, and 64 scans were collected for each NMR spectrum.
