光降解
异质结
降级(电信)
光催化
光化学
辐照
可见光谱
材料科学
催化作用
动力学
吸收(声学)
化学
化学工程
光电子学
复合材料
物理
有机化学
计算机科学
电信
量子力学
核物理学
工程类
作者
Aihui Cao,Xiaoxia Bai,Chao Yang,Min Zhang
出处
期刊:Chemosphere
[Elsevier]
日期:2024-01-01
卷期号:346: 140674-140674
标识
DOI:10.1016/j.chemosphere.2023.140674
摘要
Integration of multi-functional components into one is urgent for creating a viable platform to improve photocatalytic efficiency for environmental treatment. Here, MIL-88B–NH2 (Fe) was firstly employed to capture Ag+ cation for the formation of AgCl@MIL-88B–NH2 (Fe), and then turned into the strongly coupled Ag/AgCl@Fe2O3 with sphere-rod-like structure. As prepared Z-scheme Ag/AgCl@Fe2O3 heterojunction exhibited outstanding photocatalytic performance of tetracycline (TC) with a removal efficiency of 94.9% and a reaction kinetics of 0.0272 min−1, superior to single Ag/AgCl or Fe2O3, which attributed to the broad light absorption range and accelerated electron-hole pair separation stemmed from the synergistic effect between SPR of metal Ag and AgCl/Fe2O3 heterojunction. Meanwhile, Ag/AgCl@Fe2O3 was found to be highly catalytic in the degradation of TC even after consecutive runs. Moreover, active species trapping experiments combined with ESR techniques revealed that superoxide radical, hydroxyl radical, electron, and hole all were involved in photodegradation of TC process. Importantly, the degradation intermediate products of TC were revealed in depth by LC-MS, and a possible degradation pathway was further proposed. This work opens up new insights into the integration of functional composites for the construction of advanced photocatalysts applied in environmental purification.
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