Fig. 7.

Determination of oxydates of water by photogenerated holes in the system. a Time-dependent fluorescence emission spectra of the SFT reacted with NO₂⁻ formed from the reaction between hydroxylamine hydrochloride and ·O₂⁻ in the Co-P/BP suspension system under Xe lamp irradiation (λ ≥ 420 nm). b Photodegradation activity of RhB under different conditions. Red line: pristine RhB solution; navy line: Co-P/BP and RhB solution; and light blue line: 1 mM benzoquinone and Co-P/BP and RhB solution. The light source is a 300-W Xe lamp (λ ≥ 420 nm) and irradiation power is 100 mW cm⁻²