Figure 10.

a–e) SEM images of TiO₂ nanocrystals with the increased ratios of exposed {001} to {101} facets. f) Photocatalytic hydrogen production by the TiO₂ with different exposed facets. Reproduced with permission.86 g,h) SEM images and scheme (inset) of (g) {101}/{001} and (h) {010}/{001} TiO₂ samples. i,j) Comparison of photocatalytic (i) oxidation and (j) reduction activity by the {101}/{001} and {010}/{001} samples. k–n) Electronic band structures and charge distribution of the (k,m) type‐II {101}/{001} and (l,n) type‐I {010}/{001} samples. Reproduced with permission.87 Copyright 2013, Elsevier.