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

Figure 10

Cumulative amount of gas evolution with irradiation time in pure water over NiO(0.05 wt%)/NaTaO_3. (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. Reaction conditions: photocatalyst type, NiO(0.05 wt%)/NaTaO₃, amount of distilled water, 500 mL, photocatalyst concentration = 1.0 gL⁻¹).