Citation: Pan Xia, Chuanzhu Tang, Tong Xu, Pinyuan Sheng, Liyuan Liu, Chao Wang, Yin Xu, Qiang He, Ömür Gökkuş, Zhihong Ye. Engineering amorphous MOF with P–Fe–O sites for robust electro-Fenton degradation of micropollutants[J]. Chinese Chemical Letters, ;2026, 37(9): 112442. doi: 10.1016/j.cclet.2026.112442 shu

Engineering amorphous MOF with P–Fe–O sites for robust electro-Fenton degradation of micropollutants

Pan Xia ^{a, 1} ,
Chuanzhu Tang ^{a, 1} ,
Tong Xu ^a ,
Pinyuan Sheng ^a ,
Liyuan Liu ^b ,
Chao Wang ^a ,
Yin Xu ^b ,
Qiang He ^a ,
Ömür Gökkuş ^c ,
Zhihong Ye ^{a, *,}

a.
College of Environment and Ecology, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Chongqing University, Chongqing 400045, China
b.
Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China
c.
Department of Environmental Engineering, Sivas Cumhurivet University, 58140 Sivas, Turkey

yezhihong@cqu.edu.cn

Received Date: 18 September 2025
Revised Date: 25 November 2025
Accepted Date: 21 January 2026
Available Online: 22 January 2026

Figures(6)

Iron-based metal-organic frameworks (MOFs) stand out as promising catalysts for heterogeneous electro-Fenton (HEF) treatment of micropollutants, yet their performance is often constrained by the limited accessibility of active sites and sluggish electron transfer. Herein, a facile phosphine-assisted amorphization strategy was proposed to convert crystalline MIL-88B(Fe) into a P-coordinated amorphous counterpart (aMIL-88B(Fe)-P) featuring abundant asymmetric P–Fe–O moieties. The amorphous architecture ensures abundant exposure of active sites and enhanced mass transport, while the asymmetric coordination environment upshifts the Fe d-band center toward the Fermi level, thereby lowering the energy barrier for H₂O₂ activation. Notably, the aMIL-88B(Fe)-P-catalyzed EF system attained complete naproxen removal within 90 min, with a pseudo-first-order kinetic rate constant of 0.038 min^-1, outperforming all comparative trials and many reported HEF systems. Moreover, the system demonstrated broad-spectrum micropollutant removal, favorable catalyst reusability, and remarkable scalability in a flow-through electrochemical device, confirming strong practical applicability. This work highlights the potential of combining structural amorphization with precise coordination engineering to fully unlock the catalytic potential of MOFs for advanced EF applications.
- Electro-Fenton,
- Amorphous MOF,
- MIL-88B(Fe),
- P-coordination,
- Micropollutant degradation
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