光催化
罗丹明B
光降解
材料科学
可见光谱
复合数
铋
光化学
化学工程
金属有机骨架
降水
降级(电信)
催化作用
纳米技术
复合材料
光电子学
化学
有机化学
冶金
吸附
气象学
工程类
物理
电信
计算机科学
作者
Shifeng Zhu,Pengfei Liu,Mingyi Wu,Wenna Zhao,Guochang Li,Kai Tao,Fei‐Yan Yi,Lei Han
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2016-01-01
卷期号:45 (43): 17521-17529
被引量:161
摘要
Metal-organic frameworks (MOFs) are considered as suitable materials for various applications in the area of photocatalysis. On the other hand, 2D BiOBr materials are efficient for the photodegradation of organic dyes under visible light illumination. In this work, BiOBr/NH2-MIL-125(Ti) composite photocatalysts with different NH2-MIL-125(Ti) content were prepared by incorporating NH2-MIL-125(Ti) with BiOBr using a co-precipitation method. A series of characterizations confirmed the strong synergistic effect between BiOBr and NH2-MIL-125(Ti). In rhodamine B (RhB) degradation experiments, the composite photocatalyst with a mass percent of 7 wt% NH2-MIL-125(Ti) exhibited an improved photocatalytic activity compared to pristine BiOBr and NH2-MIL-125(Ti). Furthermore, the enhanced photocatalytic performance under visible light illumination could be attributed to the Ti3+-Ti4+ intervalence electron transfer and synergistic effect between NH2-MIL-125(Ti) and BiOBr, and also resulted in a separation efficiency of photo-generated electron-hole pairs during the photocatalytic reaction. This study can open up numerous opportunities for the development of various MOF-based visible light photocatalysts when combined with 2D bismuth oxyhalide materials for applications in environmental cleaning.
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