Multi-electron-channel integration to accelerate photogenerated carrier reaction kinetics for efficient sulfadiazine degradation
Multi-electron-channel integration to accelerate photogenerated carrier reaction kinetics for efficient sulfadiazine degradation
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多电子通道集成加速光生载流子反应动力学，实现磺胺嘧啶的高效降解
DOI：
10.1016/j.apcata.2022.118513
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Xinglong Wu
中科院分区：
文献类型：
--
作者：
Xueping Men;Yun Shan;Zuozheng Xu;Lizhe Liu;Xinglong Wu
磺胺嘧啶（SDZ）污染可引起生物基因突变，并导致人类多种疾病，但目前正面临着光降解效率低的困境。与传统的光催化剂不同，本论文的研究重点是在三金属有机骨架（MOFs）中构建多电子通道体系，通过Förster共振能量转移过程实现载流子在不同电子通道间的定向转换，从而加速电子空穴对的分离。结果表明，最佳的三金属MOF在20 min内可去除约70%的SDZ，且在9次循环后仍保持不变。这些发现为设计光生载流子反应动力学加速SDZ降解提供了新的启示。
Sulfadiazine (SDZ) pollution can cause genetic mutation of organisms and lead to different kinds of disease for humans, but it is facing the dilemma of low photodegradation efficiency. Different from the traditional photocatalysts, this work focuses on constructing a multi-electron-channel system in trimetallic metal-organic frameworks (MOFs) to accelerate the separation of electron-hole pairs, in which the carriers can be directionally converted among separate electron channels via Förster resonance energy transfer process. As a result, the optimal trimetallic MOF can sharply remove ~70% of SDZ within 20 min and remain unchanged after 9 cycles. These findings provide a new inspiration for designing photogenerated carrier reaction kinetics to accelerate SDZ degradation.