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Table 3 Band gap values calculated by Kubelka–Munk equation of diffuse reflectance spectra and OH/Otot, Ti*/Ti4+by XPS analysis for all samples

From: Photodegradation of Pollutants in Air: Enhanced Properties of Nano-TiO2Prepared by Ultrasound

Sample Band gap, eV Ti*/Ti4+ OH/Otot
T 3.19 0.17
T_300 3.20 0.12
TP0.5on49W 3.13 0.29
TP0.5on84W 3.16 0.26
TP0.9on49W 3.18 0.21
TC9W 3.42 0.87 0.27