Transition metal-based MOFs for Fenton-like photocatalytic degradation of organic pollutants: Performance, stability, and biocompatibility

被引：0
作者：
Tikhanova, S. M. [1 ]
Tishchenko, Yu. A. [2 ]
Stovpiaga, E. Yu. [1 ]
Timofeeva, M. [3 ]
Lipin, D. V. [3 ]
Povarov, S. A. [3 ]
Milichko, V. A. [4 ]
Timin, A. S. [2 ]
Shipilovskikh, S. A. [2 ,3 ]
Popkov, V. I. [1 ]
机构：
[1] Ioffe Inst, St Petersburg 194021, Russia
[2] Peter Great St Petersburg Polytech Univ, Lab Nano & Microencapsulat Biol Act Subst, St Petersburg 195251, Russia
[3] ITMO Univ, St Petersburg 191002, Russia
[4] Univ Lorraine, CNRS, IJL, F-54000 Nancy, France
来源：
ENVIRONMENTAL CHEMISTRY AND ECOTOXICOLOGY | 2025年 / 7卷
关键词：
Metal-organic materials; Water decontamination; Advanced oxidation processes; Visible-light photocatalysis; Adsorptive properties; Cytotoxicity evaluation; ENHANCED ADSORPTION; METHYLENE-BLUE; CONSTRUCTION; FRAMEWORKS; MECHANISM; CATALYST; REMOVAL;
D O I：
10.1016/j.enceco.2025.01.003
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The development of efficient materials for water treatment is crucial to addressing global environmental challenges. In this study, transition metal-based metal-organic frameworks (MeBDC MOFs; Me = Fe, Co, Ni; BDC = benzene dicarboxylic acid) were synthesized via a solvothermal method and considered as dual-function photocatalysts for adsorption and removal of organic pollutant. Comprehensive physicochemical analysis of the developed samples was performed using scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), energy-dispersive X-ray spectroscopy (EDX), fourier-transform infrared spectroscopy (FTIR), raman spectroscopy, N2 adsorption-desorption isotherms (BET), and diffuse reflectance spectroscopy (DRS). The materials exhibited a high visible-light absorption with band gap energies of 1.76 eV (FeBDC), 3.08 eV (CoBDC), and 3.73 eV (NiBDC), BET surface areas of 28.2 m2/g (FeBDC), 74.3 m2/g (CoBDC), and 31.4 m2/g (NiBDC). Photocatalytic performance was evaluated using methylene blue (MB) degradation under visible-light irradiation containing both conventional and Fenton-like processes. FeBDC achieved a reaction rate constant of 0.2719 min-1 with 50 mmol/L H2O2, outperforming other materials due to its superior visible-light absorption and catalytic activity, which justified its selection for more detailed mechanistic studies. The proposed mechanism involves ligand-to-metal charge transfer (LMCT) and Fe-driven generation of reactive oxygen species (ROS) such as hydroxyl radicals. In vitro studies conducted on human monocytes (THP-1), murine embryonic fibroblasts (MEF-NF), breast cancer cells (4T1), melanoma cells (B16-F10), and colorectal cancer cells (CT26) demonstrated high biocompatibility of the developed MOFs. By reducing reliance on toxic chemical treatments, this study highlights MeBDC MOFs as highly efficient, biocompatible, and sustainable photocatalysts, with significant potential for industrial and domestic water purification applications.
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页码：305 / 318
页数：14
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