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Research Progress on Modification Strategies of MIL-101(Fe) -based Photocatalysts

Author(s)

Xiaoyue Hou*

Affiliation(s)

School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, Liaoning, China *Corresponding Author

Abstract

Emerging pollutants, due to their toxicity, persistence, and bioaccumulation, pose a serious threat to ecosystems and human health. Tetracycline hydrochloride (TCH) is a widely used antibiotic that is frequently detected in water bodies and wastewater, necessitating efficient degradation technologies. Photocatalytic technology can achieve deep mineralization of organic pollutants, representing a green and sustainable treatment approach. Among various photocatalysts, the iron-based metal-organic framework MIL-101(Fe) has attracted attention due to its visible light response, high specific surface area, and good water stability. However, pure-phase MIL-101(Fe) faces issues such as a narrow visible light absorption range, rapid recombination of photogenerated charge carriers, and insufficient active sites. This paper systematically reviews modification strategies to enhance the photocatalytic performance of MIL-101(Fe), including the construction of bimetallic MOFs, heterostructures, ion doping, and defect engineering. These strategies can broaden the light absorption range, promote charge separation, and increase active centers. Finally, future research directions are discussed, such as green synthesis, long-term stability evaluation, mechanism studies, and the extension of photocatalytic removal to other emerging pollutants.

Keywords

MIL-101(Fe); Photocatalysis; Modification Strategies; Emerging Pollutants

References

[1] Wang B, Sui Q, Liu H, et al. Promoting environmental risk assessment and control of emerging contaminants in China. Engineering, 2024, 37: 13-17. [2] Lyu J, Yang L, Zhang L, et al. Antibiotics in soil and water in China–a systematic review and source analysis. Environmental Pollution, 2020, 266: 115147. [3] Hou J, Wang C, Mao D, et al. The occurrence and fate of tetracyclines in two pharmaceutical wastewater treatment plants of Northern China. Environmental Science and Pollution Research, 2016, 23(2): 1722-1731. [4] Zhi S, Zhou J, Yang F, et al. Systematic analysis of occurrence and variation tendency about 58 typical veterinary antibiotics during animal wastewater disposal processes in Tianjin, China. Ecotoxicology and Environmental Safety, 2018, 165: 376-385. [5] Wang F, Wang Z, Zhao Y, et al. Performance of traditional and emerging water-treatment technologies in the removal of tetracycline antibiotics. Catalysts, 2024, 14(4): 269. [6] Cheng X, Zhang M, Jia C, et al. Enhanced Formation of Nitrogenous Disinfection Byproducts from Sulfamethoxazole during UV/Chlorine Treatment: Pathways, Toxicity, and Mitigation Strategies. Journal of Environmental Chemical Engineering, 2025: 119923. [7] Fujishima A, Honda K. Electrochemical photolysis of water at a semiconductor electrode. Nature, 1972, 238(5358): 37-38. [8] Shah R, Khan D, Al-anazi A, et al. Non-metal doped ZnO and TiO2 photocatalysts for visible light active degradation of pharmaceuticals and hydrogen production: A review. Applied Catalysis O: Open, 2025, 204: 207043. [9] Zhou Z, Li J, Yang L, et al. A Review of Graphitic Carbon Nitride in Photocatalysts: Mechanisms, Synthesis, and Modification. Topics in Current Chemistry, 2026, 384(1): 7. [10] Abed H H, Ammar S H. Review of the Current Advances of Silver Halides-Based Composites as Photocatalysts for the Degradation of Organic Pollutants. Al-Nahrain Journal for Engineering Sciences, 2025, 28(3): 362-371. [11] Ahmed M A, Toghan A, Farag M, et al. Rational design of durable metal sulfide photocatalysts for pollutant degradation and solar fuel production: Challenges and outlook. Materials Science in Semiconductor Processing, 2026, 204: 110257. [12] Yang R A, Trettin J L, Miller J L, et al. Catalytic Consequences of Pore Structure, Nodal Identity, and Coordination Environment on Styrene Oxidation by Hydrogen Peroxide over Fe MOFs. Journal of the American Chemical Society, 2025, 147(38): 34527-34539. [13] Wu Q, Yang H, Kang L, et al. Fe-based metal-organic frameworks as Fenton-like catalysts for highly efficient degradation of tetracycline hydrochloride over a wide pH range: Acceleration of Fe (II)/Fe (III) cycle under visible light irradiation. Applied Catalysis B: Environmental, 2020, 263: 118282. [14] Qiu J, Zhang X, Feng Y, et al. Modified metal-organic frameworks as photocatalysts. Applied Catalysis B: Environmental, 2018, 23 1:317-42. [15] Choi J S, Jung B, Kim H H, et al. A review of metal–organic framework-based membranes for the removal of emerging contaminants from water. Journal of Water Process Engineering, 2024, 68: 106456. [16] Roy S, Pascanu V, Pullen S, et al. Catalyst accessibility to chemical reductants in metal–organic frameworks. Chemical Communications, 2017, 53(22): 3257-3260. [17] Fu Q, Zhang Y, Jiang H, et al. Nickel–cobalt alternatively arranged ultrathin 2D metal-organic frameworks via microdroplet flow method for oxygen evolution reaction. International Journal of Hydrogen Energy, 2025, 184: 151799. [18] Wang Z J, Jin Z L, Wang G R, et al Efficient hydrogen production over MOFs (ZIF-67) and g-C3N4 boosted with MoS2 nanoparticles. International Journal of Hydrogen Energy, 2018, 43:13039-13050. [19] Shearer G C, Chavan S, Ethirajj, et al. Tuned to perfection: Ironing out the defects in metal–organic framework UiO-66. Chemistry of Materials, 2014, 26(14): 4068-71. [20] Ma X, Wang L, Zhang Q, et al. Switching on the photocatalysis of metal–organic frameworks by engineering structural defects. 2019, 58(35): 12175-9. [21] De Vos A, Hendrickx K, Van Der Voort P, et al. Missing linkers: An alternative pathway to UiO-66 electronic structure engineering. Chemistry of Materials, 2017, 29(7): 3006-19.