[Mo3S13]2- modified TiO2 coating on non-woven fabric for efficient photocatalytic mineralization of acetone
[Mo3S13]2- modified TiO2 coating on non-woven fabric for efficient photocatalytic mineralization of acetone
复制标题
[Mo3S13]2â改性TiO2无纺布涂层用于丙酮的高效光催化矿化
DOI：
10.1016/j.apcatb.2018.12.060
复制
发表时间：
2019-05-15
影响因子：
22.1
通讯作者：
Qian, Xufang
中科院分区：
文献类型：
--
作者：
Han, Yu;Yue, Dongting;Qian, Xufang
提高商用TiO 2的光催化效率对于TiO 2基光催化剂的实际应用具有重要意义。采用浸渍法将[Mo 3S 13]（2-）与商品TiO 2复合，制备了新型光催化剂[Mo 3S 13]（2-）/TiO 2。该复合光催化剂表现出显着的增强丙酮的光催化矿化相比，商业TiO 2。[Mo 3S 13]（2-）的最佳负载量为1.7wt%，比Pt/TiO 2（1.5wt%）更有效。电化学阻抗谱（EIS）表明，Mo 3S 13]（2-）/TiO 2复合材料中电子传递途径顺畅，促进了光生电荷的分离。活性氧自由基清除实验表明，超氧自由基（中心点O-2（-））、羟基自由基（'OH）和光致空穴（h+）都参与了丙酮的降解。将[Mo 3S 13]（2-）/TiO 2光催化剂负载于无纺布上，与纯商品TiO 2相比，其对丙酮的光催化降解有明显的促进作用。
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 (center dot O-2(-)), 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.