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

Table 1

Physical properties of naked sodium tantalates synthesized by spray pyrolysis (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).

	Spray pyrolysis
Band gap (eV)	4.0
BET surface area (m^2/g)	5.8
Pore volume (cm^3/g)	0.019
Average pore size (nm)	8.4