Synthesis and Application of Novel Nano Fe-BTC/GO Composites as Highly Efficient Photocatalysts in the Dye Degradation
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ORIGINAL PAPER
Synthesis and Application of Novel Nano Fe‑BTC/GO Composites as Highly Efficient Photocatalysts in the Dye Degradation Hoa T. Vu1,2 · Manh B. Nguyen3,4 · Tan M. Vu2 · Giang H. Le3 · Trang T. T. Pham1,3 · Trinh Duy Nguyen1,5 · Tuan A. Vu1,3
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Nano Fe-BTC/graphene oxide (GO) composites were successfully synthesized by hydrothermal treatment with a microwaveassisted method. Samples were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), N2 adsorption–desorption, Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), and Ultraviolet– visible diffuse reflection spectroscopy (UV–Vis DRS). SEM image of Fe-BTC/GO-30 showed the particle size of 30–50 nm on the GO surface. From the UV–Vis diffuse reflectance spectra, it revealed that nano Fe-BTC/GO composite absorbed the wavelengths in the visible light region with a low bandgap energy of 2.2–2.45 eV. Fe-BTC/GO nanocomposites were tested for the photocatalytic degradation of reactive yellow 145 (RY-145) in aqueous solution. Fe-BTC/GO composites exhibited high photocatalytic activity. Thus, at pH of 3 and high initial concentration of 100 mg RY-145/L, removal efficiency reached the value of 98.18% after 60 min. of reaction. In comparison with Fe-BTC/GO synthesized by the solvothermal method, nano Fe-BTC/GO showed much higher RY-145 removal efficiency. Moreover, this Fe-BTC/GO-30 showed high catalytic activity stability and could be reused, opening the high potential application of this promising photo-Fenton catalyst in photocatalytic degradation of organic pollutants from aqueous solution. Keywords Fe-BTC/GO · Photocatalysis · Metal–organic frameworks
1 Introduction
* Trinh Duy Nguyen [email protected] * Tuan A. Vu [email protected] 1
Graduate University of Science and Technology, Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Vietnam
2
Faculty of Chemical Technology, Hanoi University of Industry, 298 Minh Khai, BacTuLiem, Ha Noi 100000, Vietnam
3
Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Vietnam
4
Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
5
Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, Vietnam
Metal–organic frameworks (MOFs) have recently emerged as promising materials for their potential applications in gas separation, storage, sensors and luminescence, drug carrier, adsorption and catalysis [1–4]. Among numerous MOFs applied for environmental remediation, iron-containing MOFs have received tremendous interest because of the combination of semiconductor properties and the Fenton process [5]. Some iron-containing MOFs such as Fe-MIL-53, Fe-MIL-88B and Fe-MIL-101, which showed high photocatalytic activity in the degradation of
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