Solar Hydrogen Production Coupled with the Degradation of a Dye Pollutant Using TiO₂ Modified with Platinum and Nafion

Figure 5

(a) Spectral shift of depending on [EDTA] and . (b) Speciation of EDTA depending on pH. Experimental conditions: [catalyst] = 0.5 g L⁻¹, [RhB] = 20 μM, [EDTA] = 4 mM, , and  nm. Samples were diluted by 3 times for the analysis. The stepwise acid dissociation constants () of EDTA are , , , and [31].

(a)

(b)