Preparation of NaTaO₃ by Spray Pyrolysis and Evaluation of Apparent Photocatalytic Activity for Hydrogen Production from Water

Figure 8

Diffuse reflectance spectra of the NaTaO₃ powder synthesized by spray pyrolysis (mean residence time = 1.80 seconds, spray pyrolysis temperature = 1173 K, precursor preparation temperature = 333 K, precursor concentration = 0.125 M, carrier gas (air) flow rate = 5 L/min, Na/Ta = 1.00).