Fig. 2
From: Effect of Experimental Parameters on the Hydrothermal Synthesis of Bi2WO6 Nanostructures
SEM images of Bi2WO6 samples prepared by adding different amounts of NaOH. a C NaOH = 0 mol (pH = 1), b C NaOH = 0.005 mol (pH = 2), c C NaOH = 0.01 mol (pH = 3), d C NaOH = 0.0175 mol (pH = 4), e C NaOH = 0.03 mol (pH = 5), f C NaOH = 0.0525 mol (pH = 7), g C NaOH = 0.05375 mol (pH = 8), h C NaOH = 0.0545 mol (pH = 9), i C NaOH = 0.055 mol (pH = 10), and j C NaOH = 0.05525 mol (pH = 11)