Pore-partitioned bimetallic metal-organic frameworks for efficient photocatalytic activation of peroxymonosulfate

IF 3.3 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-09-04 DOI:10.1016/j.solidstatesciences.2025.108056

Wenxu Ma, Zhiyong Liu, Yunqiong Yang

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Abstract

Metal-organic frameworks (MOFs) have been widely explored in photocatalytic peroxymonosulfate-based (PMS) advanced oxidation processes (AOPs) due to their highly tunable and porosity structures. In this work, three pore-partitioned MOF materials, namely [Fe₃M₂O(BDC)₃(trz)₃Cl₂(H₂O)₄]·solvent (Fe₃+M₂, M = Mg, Fe, or Zn, BDC = terephthalic acid, trz = 1,2,4-triazole), were successfully synthesized by embedding binuclear units [M₂(trz)₃] (M = Mg, Fe, or Zn) into a MIL-88B structure (Fe₃). It is demonstrated that binuclear units can introduce a large number of potential open metal sites, regulate framework stability, and optimize adsorption capacity, thereby enhancing the photocatalytic property of MOFs. Fe₃+Mg₂/PMS system showed a RhB removal efficiency of 97.5 % in 10 min under visible light irradiation, giving a degradation rate constant of 0.28 min⁻¹. In addition, the photocatalytic mechanism was also systematically investigated. This study provides a new clue for developing highly efficient and stable MOF-based catalysts for AOPs.

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孔配双金属金属有机骨架用于过氧单硫酸盐的高效光催化活化

金属有机骨架（MOFs）由于具有高度可调性和多孔性，在光催化过氧单硫酸盐基（PMS）高级氧化工艺（AOPs）中得到了广泛的研究。本研究通过在MIL-88B结构（Fe3）中包埋双核单元[M2(trz)3] (M = Mg, Fe，或Zn)，成功合成了三种孔分割MOF材料[Fe3M2O(BDC)3(trz)3Cl2（H2O)4]·溶剂（Fe3+M2, M = Mg, Fe，或Zn）， BDC =对苯二甲酸，trz = 1,2,4-三唑）。研究表明，双核单元可以引入大量潜在的开放金属位点，调节骨架稳定性，优化吸附容量，从而提高mof的光催化性能。Fe3+Mg2/PMS体系在可见光照射下10 min的RhB去除率为97.5%，降解速率常数为0.28 min−1。此外，还对其光催化机理进行了系统的研究。本研究为开发高效、稳定的mof基AOPs催化剂提供了新的思路。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.