“…It is known that MoO 3 is a good photocatalyst and it can combine or react with other materials to produce a new photocatalyst and further enhance the photocatalytic activity, such as Pd-MoO 3 /SiO 2 [22], MoO 3 /TiO 2 [23][24][25], MoO 3 /␥-Al 2 O 3 [26], Na 0.5 Bi 1.5 VMoO 8 [27], Bi 2 Mo 2 O 6 [28][29][30], Bi 2 Mo 3 O 12 [31,32], CaBiVMoO 8 [33], etc. However, the study on Ag 2 Mo 4 O 13 as a photocatalyst has been rarely reported.…”