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Iron(iii)-based metal–organic frameworks as oxygen-evolving photocatalysts for water oxidation
Sustainable Energy & Fuels ( IF 5.6 ) Pub Date : 2018-07-20 00:00:00 , DOI: 10.1039/c8se00311d
Ling-Ling Qu 1, 2, 3, 4 , Jun Wang 1, 2, 3, 4 , Tian-Yi Xu 2, 3, 4, 5 , Qiu-Yun Chen 1, 2, 3, 4 , Jie-Hui Chen 2, 3, 4, 5 , Chao-Jie Shi 2, 3, 4, 5
Affiliation  

Development of economical and highly efficient catalysts to achieve visible light-induced water oxidation is a potential approach to mitigate energy shortage and global warming. Herein, we report Fe-based MOFs (MIL-53 and NH2-MIL-53) which show photocatalytic activity for water oxidation under visible light. Compared with MIL-53 (Fe), NH2-MIL-53 (Fe) shows higher photocatalytic efficiency for water oxidation due to the narrower band gap and more efficient separation of the photo-excited electron–hole pairs. Furthermore, through active species trapping experiments and mechanism studies, we find that the photogenerated holes and hydroxyl radicals are possibly responsible for the photocatalytic water oxidation activity of the Fe-based MOFs.

中文翻译:

铁(iii)基金属有机框架作为可析氧的水氧化光催化剂

开发经济有效的催化剂以实现可见光诱导的水氧化是缓解能源短缺和全球变暖的潜在方法。本文中,我们报道了铁基MOF(MIL-53和NH 2 -MIL-53),它们在可见光下显示出对水氧化的光催化活性。与MIL-53(Fe)相比,NH 2 -MIL-53(Fe)由于带隙更窄和光激发电子-空穴对的分离效率更高,因此对水氧化具有更高的光催化效率。此外,通过活性物种捕获实验和机理研究,我们发现光生空穴和羟基自由基可能是铁基MOFs的光催化水氧化活性的原因。
更新日期:2018-07-20
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