fig11

Figure 11. (A) The EPR spectra by adding TEMPO to capture h+; (B) the EPR spectra by adding TEMP to capture 1O2; and (C) the EPR spectra by adding DMPO to capture ·O2-. TEMPO: 2,2,6,6- tetramethyl-4-piperidinol 1-oxyl; TEMP: 2,2,6,6- tetramethyl-4-piperidinol; DMPO: 5,5-dimethyl-1-pyrroline N-oxide; EPR: electron paramagnetic resonance.