Green Synthesis Komposit Magnetik MOF (Fe3O4@SiO2@MOF) sebagai Adsorben Zat Warna Metilen Biru dalam Air

Faaizatunnisa, Nuhaa (2022) Green Synthesis Komposit Magnetik MOF (Fe3O4@SiO2@MOF) sebagai Adsorben Zat Warna Metilen Biru dalam Air. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini material MOF (HKUST-1 dan MIL-100(Fe)) dan komposit magnetik MOF (Fe3O4@SiO2@MOF) berhasil disintesis dengan metode berbasis green synthesis. Komposit magnetik MOF disintesis dengan penambahan Fe3O4@SiO2 pada variasi sebesar 50 dan 100% terhadap massa MOF. Material MOF dan komposit magnetik MOF dikarakterisasi dengan X-ray diffraction (XRD), Fourier Transform Infra Red (FTIR), Surface Area Analyzer (SAA), Scanning Electron Microscope Energy Dispersive (SEM-EDX), Thermo-Gavimetric Analysis (TGA) dan Vibrating Sample Magnetometer (VSM). Pola difraksi MOF dan komposit magnetik MOF menunjukkan adanya puncak karakteristik sesuai dengan standart HKUST-1 dan MIL-100(Fe) dengan intensitas tinggi. Spektra FTIR menunjukkan pita serapan khas dari HKUST-1 dan MIL-100(Fe), serta munculnya pita serapan baru Si-O dan Fe-O pada komposit. Morfologi material komposit magnetik MOF menunjukkan bentuk bola disekitar MOF. Data adsorpsi-desorpsi N2 menunjukkan bahwa sintesis MOF berbasis green chemistry memberikan luas permukaan spesifik yang tinggi sebesar 734 m2/g (HKUST-1) dan 1185 m2/g (MIL-100(Fe)) setara dengan metode solvotermal. Penambahan Fe3O4@SiO2 pada komposit menurunkan luas permukaan komposit magnetik HKUST-1 menjadi 66 dan 18 m2/g (komposit 1 dan 2) dan komposit magnetik MIL-100(Fe) menjadi 717 dan 800 m2/g (komposit 3 dan 4). Material komposit magnetik MOF memiliki kapasitas adsorpsi lebih tinggi dibandingkan dengan MOF murni yakni 434,78 dan 270,27 mg/g untuk komposit magnetik HKUST-1 (komposit 1 dan 2) dan 714,29 dan 625 mg/g untuk komposit magnetik MIL-100(Fe) (komposit 3 dan 4). Semua material hasil sintesis menunjukkan kinetika adsorpsi dan isotermal adsorpsi pada orde dua semu dan isotermal adsorpsi Langmuir. Setelah didaur ulang sebanyak 5 kali, komposit magnetik MOF hasil sintesis memberikan persen penghapusan lebih tinggi daripada material MOF murni, yakni sebesar 78,80 dan 81,41%.
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In this study, MOFs (HKUST-1 and MIL-100(Fe) and Magnetic MOFs Composite (Fe3O4@SiO2@MOF) have been successfully synthesized via a green chemistry-based method. The Magnetic MOFs Composites ware synthesized with variation of 50 and 100% Fe3O4@SiO2 addition by weight to MOF. MOF and Magnetic MOFs Composites ware characterized by X-Ray Diffraction (XRD), Fourier Transform InfraRed (FTIR), Surface Area Analyzer (SAA), Scanning Electron Microscope Energy Dispersive (SEM-EDX), Thermo-Gravimetric Analysis (TGA) and Vibrating Sample Magnetometer (VSM). The diffraction pattern of MOF and Magnetic MOF Composites showed high-intensity characteristic peaks of HKUST-1 and MIL-100(Fe). The FTIR spectra showed typical absorption bands of both HKUST-1 and MIL-100(Fe) materials and new Si-O and Fe-O absorption bands on composite. The morphology of the Magnetic MOFs Composites shows a spherical shape around MOF. The BET surface area data showed that the MOF synthesis based on green chemistry gave a high specific surface area of 734 m2/g for HKUST-1 and 1185 m2/g for MIL-100(Fe), equivalent to solvothermal methods. The Fe3O4@SiO2 addition on MOFs decreased surface area to 66 and 18 m2/g (Composite 1 and 2) and 717 and 800 m2/g (Composite 3 and 4). The Magnetic MOF Composites had a higher adsorption capacity than MOF of 454.55 and 270.27 mg/g for Magnetic HKUST-1 Composite (composite 1 and 2) and 714.29 and 625 mg/g for Magnetic MIL-100(Fe) Composite (composite 3 and 4). All synthesized materials showed adsorption kinetics and isothermal adsorption in pseudo-second order kinetics and Langmuir isotherm modeling. After five-time recycled, Magnetic MOF Composites still provided a higher removing methylene blue than MOF, that is 78.80% for Magnetic HKUST-1 and 81.41% for Magnetic MIL-100(Fe).

Item Type:	Thesis (Masters)
Additional Information:	RTKI 541.395 Faa g-1 2022
Uncontrolled Keywords:	HKUST-1, MIL-100(Fe), komposit magnetik MOF, green chemistry, adsorpsi, metilen biru
Subjects:	Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis
Depositing User:	- Davi Wah
Date Deposited:	31 Oct 2023 07:38
Last Modified:	31 Oct 2023 07:39
URI:	http://repository.its.ac.id/id/eprint/105020

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