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Effective photocatalytic activity of mixed Ni/Fe-base metal-organic framework under a compact fluorescent daylight lamp

Vo, Dai-Viet N. and Nguyen, Vinh Huu and Nguyen, Trinh Duy and Bach, Long Giang and Hoang, Thai and Bui, Quynh Thi Phuong and Tran, Lam Dai and Nguyen, Chuong V. and Do, Sy Trung (2018) Effective photocatalytic activity of mixed Ni/Fe-base metal-organic framework under a compact fluorescent daylight lamp. Catalysts, 8 (11). pp. 1-20. ISSN 2073-4344

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Abstract

Mixed Ni/Fe-base metal-organic framework (Ni/Fe-MOF) with different molar ratios of Ni 2+ /Fe 3+ have been successfully produced using an appropriate solvothermal router. Physicochemical properties of all samples were characterized using X-ray diffraction (XRD), Raman, field emission scanning electron microscopes (FE-SEM), fourier-transform infrared spectroscopy (FT-IR), N 2 adsorption-desorption analysis, X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS), and photoluminescence spectra (PL). The photocatalytic degradation performances of the photocatalysts were evaluated in the decomposition of rhodamine B (RhB) under a compact fluorescent daylight lamp. From XRD, IR, XPS, and Raman results, with the presence of mixed ion Fe 3+ and Ni 2+ , MIL-88B (MIL standing for Materials of Institut Lavoisier) crystals based on the mixed metal Fe 2 NiO cluster were formed, while MIL-53(Fe) was formed with the presence of single ion Fe 3+ . From UV-Vis DRS results, Ni/Fe-MOF samples exhibited the absorption spectrum up to the visible region, and then they showed the high photocatalytic activity under visible light irradiation. A Ni/Fe-MOF sample with a Ni 2+ /Fe 3+ molar ratio of 0.3 showed the highest photocatalytic degradation capacity of RhB, superior to that of the MIL-53(Fe) sample. The obtained result could be explained as a consequence of the large surface area with large pore volumes and pore size by the Ni 2+ incorporating into the MOF’s structure. In addition, a mixed metal Fe/Ni-based framework consisted of mixed-metal cluster Fe 2 NiO with an electron transfer effect and may enhance the photocatalytic performance.

Item Type: Article
Additional Information: Indexed by SCOPUS
Uncontrolled Keywords: Photocatalytic decomposition of rhodamine B; MIL-53(Fe); Ni/Fe-MOF; Visible light irradiation
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Dr. Vo Nguyen Dai Viet
Date Deposited: 05 Mar 2019 09:07
Last Modified: 05 Mar 2019 09:07
URI: http://umpir.ump.edu.my/id/eprint/23940
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