Purified water

MB water

N₂

O₃

Bubble concentration/10⁸ mL⁻¹

0

1.64

0.88

Bubble diameter/nm

-

103

135

Aqueous ozone concentration/mgL⁻¹

-

-

3.19

yield ([ZnO]/[Zn(NO₃)₂])

0.11

0.35

0.6