SOLID STATE SYNTHESIS OF La-DOPED NaTaO₃ UNDER TIME-REDUCE CONDITIONS AND ITS PHOTOCATALYTIC PROPERTIES

Lanthanum-doped sodium tantalate was synthesized by solid state method at low temperature and short calcination time. Pure phase powders were obtained after calcination at 950C and 1000C for 1h with average crystal size below 150 nm. The photocatalytic performance was increased with La concentration, reaching a maximum at 2 mol. % La. Good activity was observed even without any loading cocatalyst. After further calcination, there was no evidence of improvement of the photocatalytic performance.