Photocatalytic indium-tantalum-oxide and its photoluminescence

Abstract

Both bulk ceramic and powder like samples In0,9Ni0,1TaO4 photocatalytic semiconductor oxides have been obtained by the method of solid phase reactions. The photocatalytic activity on water splitting has been investigated using for identification of hydrogen yield a chemoresistive gas sensor ROGS-3. For the fist time the material photoluminescence (PL) properties have been studied in the wide - 350-850 nm and narrow - 360- 410 nm ranges of the light spectrum and some spectrum peculiarities at T=10 and 300 K are observed. The correlation between photocatalytic action of In0,9Ni0,1TaO4 on water splitting processes and its photoluminescence peculiarities has been established. The materials with high photocatalytic activity are characterized by PL peak increase at 450 nm and the maximum attenuation at 660 nm.