[Mo3S13]2− modified TiO2 coating on non-woven fabric for efficient photocatalytic mineralization of acetone

Improving the photocatalytic efficiency of commercial TiO 2 has important significance for practical application of TiO 2 based photocatalysts. A novel photocatalyst [Mo 3 S 13 ] 2− /TiO 2 was fabricated by combining [Mo 3 S 13 ] 2− with commercial TiO 2 by an impregnation method. This composite photocatalyst presented a remarkable enhancement on photocatalytic mineralization of acetone in comparison with commercial TiO 2 . The optimum loading amount of [Mo 3 S 13 ] 2− was 1.7wt%, which is more efficient than the Pt/TiO 2 (1.5wt%). Electrochemical impedance spectroscopy (EIS) showed the smooth electron transfer pathway in [Mo 3 S 13 ] 2− /TiO 2 composite, facilitating the photo-charges separation during the photocatalysis process. Reactive oxygen species scavenging test illustrated that superoxide radical ( O 2 − ), hydroxyl radical ( OH) and photo-induced hole (h + ) were all contributing to the acetone degradation. The [Mo 3 S 13 ] 2− /TiO 2 photocatalyst was deposited on non-woven fabrics which showed obvious promotion on the photocatalytic degradation of acetone in comparison with pristine commercial TiO 2 .