Fig. 1 | Nature Communications

Fig. 1

From: Photocatalytic water splitting by N-TiO2 on MgO (111) with exceptional quantum efficiencies at elevated temperatures

Fig. 1

EPR patterns of the N-doped TiO2 photocatalysts. a N-doped TiO2 N-P25-550 (freshly prepared) at different times. After being treated in NH3 at 550 °C for 8 h, the EPR of the freshly made sample was measured immediately. Then more EPR spectra were also collected after the sample was exposed to air for 0.5, 1, 3 and 24 h. b Deactivated N-P25-550 after recalcination in N2 at different temperatures; N-P25-550 quenched from c liquid water and d water vapour at different temperatures

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