Triangular pyramids and cubes NaNbO3 were obtained on different substrates.
Triangular pyramid sample exhibits higher photocatalytic oxidization activity.
The class="glyphImg imgLazyJSB">OH radical is identified as the dominant oxide species.
The class="glyphImg imgLazyJSB">OH radical comes from
class="glyphImg imgLazyJSB">O2− with the intermediate of H2O2.