Fig. (11)
SEM images of the PbI
2
powders synthesized using different surfactants: 1g/L PVP (
a
), 1g/L sodium citrate (
b
), 1g/L EDTA (
c
) under the following experimental conditions: pH=4, [Pb(II)]=0.03mol/L, t=70min,V=1.0ml/min.
