Controlling Metal Clusters in Breathing Metal–Organic Framework Nanostructures for Boosting Visible-Light-Induced ·OH Radical Formation
Controlling Metal Clusters in Breathing Metal–Organic Framework Nanostructures for Boosting Visible-Light-Induced ·OH Radical Formation
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控制呼吸金属有机框架纳米结构中的金属簇促进可见光诱导·OH自由基的形成
DOI：
10.1021/acsanm.1c04183
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发表时间：
2022-02
影响因子：
5.9
通讯作者：
Bo Wang
中科院分区：
文献类型：
--
作者：
Yunyun Li;Xiang Li;Bo Wang
近年来，水循环中报告了具有高环境风险的药物痕迹。传统的废水处理工艺在消除这些微污染物方面基本上是无效的。先进的废水处理工艺具有实现高去除率的巨大潜力。因此，金属簇（铁氧，铝氧，和铬氧）诱导的活性氧形成通过非均相催化剂中的抗生素降解过程进行了探讨。在这项研究中，我们合成了一系列的MIL-53与一维光诱导混合价金属链包含三个选定的集群。结果表明，高级氧化性能是高度依赖于金属。Fe-O和Cr-O对光-Fenton反应有显著的促进作用。此外，铝氧可以作为一个有前途的非均相类Fenton催化剂。对材料进行了系统的表征，包括紫外-可见漫反射光谱、Tauc曲线和瞬态光电流分析。Fe/Cr基金属有机骨架材料具有良好的光吸收性能和较高的活性氧产生能力，且金属原子中心平均分离，因此具有明显的可见光光芬顿效应。Al基催化剂通过与Al原子配位的H2O-H2 O2取代基的形成和分解促进对乙酰氨基酚的降解。所有这些异构材料都能通过促进·OH的产生而有效地促进对乙酰氨基酚的降解过程。
In recent years, traces of pharmaceuticals with high environmental risks have been reported in water cycles. Conventional wastewater treatment processes are largely ineffective in eliminating these micropollutants. Advanced wastewater treatment processes have great potential to achieve high removal rates. Thus, metal cluster (Fe-oxo, Al-oxo, and Cr-oxo)-induced ROS formation via heterogeneous catalysts was explored in an antibiotic degradation process. In this study, we synthesized a series of MIL-53 with one-dimensional photo-induced mixed-valence metal chains containing three selected clusters. Results show that the advanced oxidation performance is highly metal-dependent. Fe-oxo and Cr-oxo can significantly promote the photo-Fenton process. Also, Al-oxo can serve as a promising heterogeneous Fenton-like catalyst. Systematical characterizations of these materials were given including UV–vis DRS, Tauc’s plot, and transient photocurrent analysis. Fe/Cr-based metal–organic frameworks convey obvious visible-light photo-Fenton performance by excellent light absorption properties and high ROS production ability with an averaged separated metal atom center. The Al-based one can promote acetaminophen degradation by the formation and decomposition of H2O–H2O2substitution coordinated to an Al atom. All these isostructural materials can promote the acetaminophen degradation process effectively by boosting ·OH production.
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DOI：
10.1016/j.apcatb.2016.05.041
发表时间：
2016-12
期刊：
Applied Catalysis B: Environmental
影响因子：
--
作者：
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影响因子：
8.8
作者：
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影响因子：
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作者：
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影响因子：
15.1
作者：
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通讯作者：
Si-yun He;Tengfei Li;Lan-tao Zhang;Xiaofang Zhang;Ziwen Liu;Ying Zhang;Jingzhen Wang;Hanzhong Ji
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影响因子：
22.1
作者：
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通讯作者：
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