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Interface electron transfer of Bi2MoO6/MIL-125 and the visible-light performance for pollutant degradation
Colloids and Surfaces A: Physicochemical and Engineering Aspects ( IF 4.9 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.colsurfa.2020.124748
Xiaoman Yang , Wenhao Gu , Yiwen Ma , Siyu Zhai , Fei Teng

Abstract It is desirable to reveal and in deep understand interface charge transfer behavior that is a crucial process in photochemical reaction. Herein, we mainly investigate the electron transfer behavior on the Bi2MoO6/titanium metal-organic framework (BMO/MIL-125) interface. It is found that on the BMO/MIL-125 hybrid interface, MIL-125 can favor for fluent electron transfer. Compared with BMO, BMO/MIL-125 hybrid has an improved visible-light activity due to an improved charge separation. Moreover, BMO/MIL-125 has a higher BET area (106.5 m2 g-1), compared with BMO (16.6 m2 g-1), which can provide more active sites. The visible-light degradation activity of BMO/MIL-125 is 1.83 and 16.26 times as high as that of BMO and MIL-125, respectively. Dye photosensitization and higher electron transfer and separation efficiency are the two main reasons for the improved degradation performance. This work can help us well understand the interface electron transfer behavior in a photochemical reaction.

中文翻译:

Bi2MoO6/MIL-125的界面电子转移和污染物降解的可见光性能

摘要 需要揭示和深入理解界面电荷转移行为,这是光化学反应中的一个关键过程。在此,我们主要研究 Bi2MoO6/钛金属-有机骨架(BMO/MIL-125)界面上的电子转移行为。发现在 BMO/MIL-125 混合界面上,MIL-125 有利于流畅的电子转移。与 BMO 相比,BMO/MIL-125 杂化物由于改进了电荷分离而具有改进的可见光活性。此外,与 BMO (16.6 m2 g-1) 相比,BMO/MIL-125 具有更高的 BET 面积 (106.5 m2 g-1),可以提供更多的活性位点。BMO/MIL-125的可见光降解活性分别是BMO和MIL-125的1.83倍和16.26倍。染料光敏化和更高的电子转移和分离效率是降解性能提高的两个主要原因。这项工作可以帮助我们很好地理解光化学反应中的界面电子转移行为。
更新日期:2020-07-01
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