“…Thus, Bi-based oxide semiconductors are easy to acquire a visible light responsive ability [14,17]. The typical efficient Bi-based photocatalysts are BiVO 4 [18][19][20][21], CaBi 2 O 4 [22], Bi 2 WO 6 [23,24], Bi 2 MoO 6 [25], bismuth titanium oxides [26][27][28] and some Bi-based multiple-metal oxides [29][30][31][32].…”