Novel MIL-53(Fe)-encapsulated gelatinous boehmite granules and their enhanced photocatalytic performance towards tetracycline
Tập 135 Số 1B (2026), Nghiên cứu
Tập 135 Số 1B (2026)

Novel MIL-53(Fe)-encapsulated gelatinous boehmite granules and their enhanced photocatalytic performance towards tetracycline

Nghiên cứu
https://doi.org/10.26459/hueunijns.v135i1B.8271
Đã xuất bản 2026-05-29
Thi Minh Nguyet Bui
Faculty of Natural Sciences and Education, Dong Thap University, Dongthap, Vietnam
Van Hung Nguyen
Faculty of Natural Sciences and Education, Dong Thap University, Dongthap, Vietnam
Cao Duy An Nguyen
Quoc Hoc Hue High School, Hue, Vietnam
Ngoc Bich Nguyen
Faculty of Natural Sciences and Education, Dong Thap University, Dongthap, Vietnam
The Ky Vo
Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam

Tóm tắt

Developing materials with high photocatalytic activity and easy recovery remains a challenge in industry. In this work, MIL-53(Fe) crystal powder was effectively encapsulated within gelatinous boehmite to produce millimetre-scale AlOOH@MIL-53(Fe) granules using the oil-drop method. The materials were utilised for the photodegradation of tetracycline (TC). These granules underwent detailed characterisation by SEM, FT-IR, XRD, N2 sorption, TGA, and UV-Vis DRS techniques. The resulting granular composites exhibited improved porosity and visible-light absorption. Photocatalytic testing under energy-efficient visible LED light demonstrated that the AlOOH@MIL-53(Fe) granules achieved a removal efficiency of 93% for TC, higher than that of the original MOF (82%) and the AlOOH granules without loaded MOF (54%). Kinetic analysis indicated that the photodegradation of TC followed a pseudo-second-order model, with rate constants in the following decreasing order: AlOOH@MIL-53(Fe) (0.0021 mg–1.L.min–1), MIL-53(Fe) (0.00074 mg–1.L.min–1), and AlOOH(0.00016 mg–1.L.min–1). Notably, the developed granules are easy to recover and retain suitable reusability in photocatalytic processes, highlighting their significant potential for real-world wastewater treatment applications.

https://doi.org/10.26459/hueunijns.v135i1B.8271
PDF (English)

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