Figure 4

The optimization of experimental parameters: the effect of the concentration of Na2S (A) and the concentration of AA (B) and buffer solution pH (C) and the incubation time (D) on the photocurrent responses.
The optimization of experimental parameters: the effect of the concentration of Na2S (A) and the concentration of AA (B) and buffer solution pH (C) and the incubation time (D) on the photocurrent responses.