Raw ¹H NMR Data for Quantitative Monitoring of Photocatalytic Methylene Blue Degradation on TiO2

This dataset contains the raw 1H NMR free induction decay (FID) files underlying the manuscript "Quantitative 1H NMR Spectroscopy for Kinetic Monitoring of Photocatalytic Methylene Blue Degradation" (Günnaz and Ülkü). Three parallel samples, prepared from a single stock solution of methylene blue (3.13 mM) in D2O, were monitored by 1H NMR over 5 h: (a) MB + TiO2, irradiated — methylene blue with anatase TiO2 (20 g/L), under UVA/UVB irradiation (b) MB only, irradiated — methylene blue alone (no catalyst), under UVA/UVB irradiation (photolysis control) (c) MB + TiO2, dark control — methylene blue with TiO2, foil-wrapped and held inside the operating reactor (dark and thermal control) Each sample was measured at t = 0, 1, 3 and 5 h on a common time axis, giving 12 spectra in total. A separate inversion-recovery array was recorded on a catalyst-free methylene blue solution to determine the longitudinal relaxation time (T1) of the N-methyl resonance.