“…Transition metal molybdates, such as CoMoO 4 , FeMoO 4 , NiMoO 4 , CuMoO 4 , Cu 3 Mo 2 O 9 , and MnMoO 4 , have gained popularity in field of catalysts, energy storage, sensors, and magnetic applications, owing to their superior electrocatalytic activity, multiple oxidation states, and outstanding electronic conductivity . In particular, Cu 3 Mo 2 O 9 stands out due to its environmental benignity, photocurrent response, and high theoretical capacity .…”