Catalysis Communications ( IF 3.4 ) Pub Date : 2019-12-18 , DOI: 10.1016/j.catcom.2019.105910 Danxia Zhao , Chun Cai
Ce-doped MIL-101-NH2 sensitized Ag3PO4 composites were successfully prepared using an in-situ ion-exchange deposition method. The adsorption capacity of these composites was observed to decrease as Ce/Fe ratio was increased. Under white LED irradiation, the addition of Ce to MIL-101-NH2 improved the visible light response of the metal organic framework (MOF). The obtained Ce-doped MIL-101-NH2 sensitized Ag3PO4composite shows excellent photocatalytic activity and stability for the degradation of pollutants. This superior performance can be explained by the redox couple Ce3+/ Ce4+ accelerating the migration of photo-induced holes, thereby facilitating efficient separation of photo-generated electron–hole pairs.
中文翻译:
Ce掺杂的MIL-101-NH 2 / Ag 3 PO 4复合材料对污染物的吸附和光催化降解
使用原位离子交换沉积方法成功制备了Ce掺杂的MIL-101-NH 2敏化的Ag 3 PO 4复合材料。观察到这些复合材料的吸附能力随着Ce / Fe比的增加而降低。在白光LED照射下,向MIL-101-NH 2中添加Ce可以改善金属有机骨架(MOF)的可见光响应。所获得的Ce掺杂的MIL-101-NH 2敏化的Ag 3 PO 4复合材料表现出优异的光催化活性和对污染物降解的稳定性。氧化还原对Ce 3+ / Ce 4+可以解释这种优越的性能 加速了光致空穴的迁移,从而促进了光生电子-空穴对的有效分离。