Sintesis Komposit Fe2O3/MIL-125(Ti) Berpori dengan Template MIL-100(Fe) sebagai Fotokatalis untuk Degradasi Metilen Biru dalam Air

Putri, Desindy Ramadhani (2025) Sintesis Komposit Fe2O3/MIL-125(Ti) Berpori dengan Template MIL-100(Fe) sebagai Fotokatalis untuk Degradasi Metilen Biru dalam Air. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini, MIL-100(Fe), MIL-125(Ti), dan Fe2O3/MIL-125(Ti) dengan variasi penambahan Fe2O3 sebanyak 20 dan 50% telah berhasil disintesis. Fe2O3 diperoleh melalui metode kalsinasi dalam atmosfer udara pada suhu 600 °C selama 2 jam dengan template MIL-100(Fe). Difraktogram dan spektra FTIR material hasil sintesis menunjukkan puncak khas pada 2θ dan serapan khas yang sesuai dengan data standar. Morfologi permukaan material hasil sintesis mengalami perubahan setelah penambahan Fe2O3. Suhu kalsinasi hasil TGA sebesar 600 °C. Hasil UV-Vis DRS menunjukkan bahwa material celah pita (Eg) dari MIL-125(Ti), MIL-100(Fe), dan Fe2O3 dihitung berturut-turut sebesar 3,64; 2,98; dan 2,08 eV. Hasil adsorpsi-desorpsi N2, diketahui Fe2O3(20)/MIL-125(Ti) memiliki diameter pori tertinggi daripada material hasil sintesis lainnya yaitu sebesar 9,428 nm. Material hasil sintesis diuji aktivitasnya sebagai adsorben dan fotokatalis pewarna metilen biru (MB) dalam air. Hasil uji adsorpsi menunjukkan bahwa semua material hasil sintesis mengikuti model kinetika orde dua semu dan model adsorpsi Langmuir dengan nilai kapasitas adsorpsi maksimum sebesar 253,719 mg/g. Hasil kinerja fotokatalitik material Fe2O3(20)/MIL-125(Ti) menunjukkan efisiensi degradasi sebesar 98% dengan laju degradasi lebih cepat daripada MIL-125(Ti) murni dalam 30 mL larutan MB 50 mg/L selama 100 menit di bawah iradiasi lampu UV-LED. Hasil ini menunjukkan bahwa penggabungan dua material dapat membentuk heterojunction dengan peningkatan efisiensi fotokatalitik.
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In this study, MIL-100(Fe), MIL-125(Ti), and Fe₂O₃/MIL-125(Ti) with variations of Fe₂O₃ addition of 20 and 50% have been successfully synthesized. Fe₂O₃ was obtained through the calcination method in an air atmosphere at 600 °C for 2 hours with the MIL-100(Fe) template. Diffractograms and FTIR spectra of the synthesized material showed a typical peak at 2θ and typical absorption that was in accordance with standard data. The surface morphology of the synthesized material changed after the addition of Fe₂O₃. The calcination temperature of the TGA results was 600 °C. UV-Vis DRS results showed that the band gap (Eg) of MIL-125(Ti), MIL-100(Fe), and Fe₂O₃ were calculated to be 3,64; 2,98; and 2.08 eV, respectively. From the results of N2 adsorption-desorption, it is known that Fe2O3(20)/MIL-125(Ti) has the highest pore diameter of the other synthesized materials, which is 9,428 nm. We tested the synthesized materials for their activity as adsorbents and photocatalysts of methylene blue (MB) dye in water. The adsorption test results showed that all the synthesized materials followed the pseudo-second-order kinetic model and the Langmuir adsorption model, with 253,719 mg/g being the highest amount that could adsorb. The photocatalytic performance results of the Fe₂O₃(20)/MIL-125(Ti) material showed a degradation efficiency of 98% with a degradation rate faster than pure MIL-125(Ti) in 30 mL of 50 mg/L MB solution for 100 minutes under UV-LED irradiation. These results indicate that the combination of two materials can form a heterojunction with increased photocatalytic efficiency.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Fe2O3/MIL-125(Ti), MIL-100(Fe), MIL-125(Ti), heterojunction, fotokatalisis. Fe2O3/MIL-125(Ti), MIL-100(Fe), MIL-125(Ti), heterojunction, photocatalysis.
Subjects:	Q Science > QD Chemistry Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis
Depositing User:	Desindy Ramadhani Putri
Date Deposited:	07 Feb 2025 06:08
Last Modified:	07 Feb 2025 06:08
URI:	http://repository.its.ac.id/id/eprint/118536

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