Metal-Organic Framework MIL-101: Synthesis and Photocatalytic Degradation of Remazol Black B Dye

Journal of Nanomaterials - Tập 2019 - Trang 1-15 - 2019
Phạm Đình Dũ1, Huynh Thi Minh Thanh2,3, Thuy Chau To1, Ho Sy Thang4, Mai Xuan Tinh3, Trần Ngọc Tuyền3, Trần Thái Hoà3, Đinh Quang Khiếu3
1Faculty of Natural Science, Thu Dau Mot University, 820000, Vietnam
2Department of Chemistry, Quy Nhon University, 59000, Vietnam
3University of Sciences, Hue University, 530000, Vietnam
4Dong Thap University, 870000, Vietnam

Tóm tắt

In the present paper, the synthesis of metal-organic framework MIL-101 and its application in the photocatalytic degradation of Remazol Black B (RBB) dye have been demonstrated. The obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption/desorption isotherms at 77 K. It was found that MIL-101 synthesized under optimal conditions exhibited high crystallinity and specific surface area (3360 m2·g-1). The obtained MIL-101 possessed high stability in water for 14 days and several solvents (benzene, ethanol, and water at boiling temperature). Its catalytic activities were evaluated by measuring the degradation of RBB in an aqueous solution under UV radiation. The findings show that MIL-101 was a heterogeneous photocatalyst in the degradation reaction of RBB. The mechanism of photocatalysis was considered to be achieved by the electron transfer from photoexcited organic ligands to metallic clusters in MIL-101. The kinetics of photocatalytic degradation reaction were analyzed by using the initial rate method and Langmuir-Hinshelwood model. The MIL-101 photocatalyst exhibited excellent catalytic recyclability and stability and can be a potential catalyst for the treatment of organic pollutants in aqueous solutions.

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Thông tin xuất bản

Journal of Nanomaterials

Tập 2019

1-15

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