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. 2014 Oct 28;19(11):17279–17304. doi: 10.3390/molecules191117279

Figure 6.

Figure 6

Experimental (black) and simulated (red) EPR spectra (SW = 8 mT) obtained upon irradiation (λmax = 365 nm; irradiance 15 mW∙cm−2; exposure 400 s) of the aerated TiO2 P25 DMSO suspensions in the presence of various spin trapping agents (TiO2 concentration 0.167 mg∙mL−1): (a) DMPO (c0,DMPO = 0.035 M); (b) DBNBS (c0,DBNBS = 0.008 M); (c) DBNBS using DMSO-d6 (83% vol.). The spin Hamiltonian parameters of corresponding spin-adducts are listed in Table 4. (a) •DMPO–O2− (relative concentration in %, 46), •DMPO–OCH3 (46), •DMPO–OR (6), •DMPO–CH3 (2); (b) •DBNBS–CH3 (90), •DBNBS–SO3− (10); (c) •DBNBS–CD3 (86), •DBNBS–CH3 (14).