Improving the photocatalytic efficiency of commercial TiO₂ has important significance for practical application of TiO₂ based photocatalysts. A novel photocatalyst [Mo₃S₁₃]²⁻/TiO₂ was fabricated by combining [Mo₃S₁₃]²⁻ with commercial TiO₂ by an impregnation method. This composite photocatalyst presented a remarkable enhancement on photocatalytic mineralization of acetone in comparison with commercial TiO₂. The optimum loading amount of [Mo₃S₁₃]²⁻ was 1.7wt%, which is more efficient than the Pt/TiO₂ (1.5wt%). Electrochemical impedance spectroscopy (EIS) showed the smooth electron transfer pathway in [Mo₃S₁₃]²⁻/TiO₂ composite, facilitating the photo-charges separation during the photocatalysis process. Reactive oxygen species scavenging test illustrated that superoxide radical (O₂⁻), hydroxyl radical (OH) and photo-induced hole (h⁺) were all contributing to the acetone degradation. The [Mo₃S₁₃]²⁻/TiO₂ photocatalyst was deposited on non-woven fabrics which showed obvious promotion on the photocatalytic degradation of acetone in comparison with pristine commercial TiO₂.

提高商业TiO ₂的光催化效率对TiO ₂基光催化剂的实际应用具有重要意义。通过浸渍法将[Mo ₃ S ₁₃ ] ^2-与市售TiO ₂结合，制备了新型光催化剂[Mo ₃ S ₁₃ ] ^2- / TiO ₂。与市售TiO ₂相比，该复合光催化剂在丙酮的光催化矿化方面表现出显着增强。[Mo ₃ S ₁₃ ] ^2-的最佳负载量为1.7wt％，这比Pt / TiO ₂（1.5wt％）更有效。电化学阻抗谱（EIS）在[Mo ₃ S ₁₃ ] ^2- / TiO ₂复合材料中显示出平滑的电子传递路径，从而促进了光催化过程中的光电荷分离。活性氧自由基的测试说明的是超氧自由基（ö ₂ ^- ），羟基自由基（OH）和光致孔（H ⁺）均有助于丙酮降解。[Mo ₃ S ₁₃ ] ^2- / TiO ₂光催化剂沉积在无纺布上，与原始的商用TiO ₂相比，光催化剂对丙酮的光催化降解具有明显的促进作用。