Hidayat, Alvin Romadhoni Putra (2026) Pengembangan Material Hibrida Fe2O3/ZrO2 dari Fe-MOF/UiO-66 Ligan Campuran dan Studi Mekanisme Adsorpsi-Degradasi Fenton Terhadap Pewarna Organik. Doctoral thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Degradasi zat warna organik menggunakan katalis Fenton heterogen masih menghadapi keterbatasan, terutama pada efisiensi transfer elektron, aksesibilitas situs aktif, serta stabilitas material selama reaksi. Pendekatan berbasis metal–organic framework (MOF) ligan campuran dipilih untuk merekayasa struktur pori dan membentuk heterostruktur oksida logam yang lebih efektif. Dalam penelitian ini, MOF biner MIL-53(Fe)/UiO-66 disintesis dan digunakan sebagai template untuk menghasilkan material Fe₂O₃/ZrO₂ berpori melalui proses kalsinasi pada suhu 600 °C. Integrasi kedua MOF menghasilkan struktur komposit dengan distribusi Fe dan Zr yang homogen serta interaksi antarmuka Fe–Zr yang kuat. Hasil karakterisasi menunjukkan bahwa material komposit MOF memiliki luas permukaan spesifik sebesar 101,379 m²/g dengan struktur pori hierarkis mikro–mesopori. Setelah kalsinasi, terbentuk heterostruktur Fe₂O₃/ZrO₂ yang didominasi mesopori dengan volume pori 0,141 cm³/g dan luas permukaan 25,746 m²/g, yang mendukung difusi molekul dan ketersediaan situs aktif. Uji adsorpsi metilen biru menunjukkan bahwa material Fe₂O₃/ZrO₂ memiliki kapasitas adsorpsi tinggi dan mengikuti model kinetika pseudo orde kedua dengan nilai Qe mencapai 59,26 mg/g. Pada proses degradasi berbasis Fenton heterogen, material mampu mendegradasi metilen biru hingga lebih dari 99% pada kondisi optimum dan menunjukkan kestabilan kinerja selama beberapa siklus penggunaan. Sinergi antara Fe₂O₃ sebagai pusat redoks aktif dan ZrO₂ sebagai penstabil struktur serta mediator transfer elektron berperan penting dalam peningkatan efisiensi reaksi, sehingga material ini berpotensi diaplikasikan sebagai katalis Fenton heterogen untuk pengolahan air limbah.
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The degradation of organic dyes using heterogeneous Fenton catalysts still faces several limitations, particularly related to inefficient electron transfer, limited accessibility of active sites, and material stability during the reaction. A mixed-ligand metal–organic framework (MOF) approach was employed to engineer pore structures and construct more effective metal oxide heterostructures. In this study, a binary MOF composed of MIL-53(Fe)/UiO-66 was successfully synthesized and used as a template to produce porous Fe₂O₃/ZrO₂ through calcination at 600 °C. The integration of both MOFs resulted in a composite structure with homogeneous Fe and Zr distribution and strong Fe–Zr interfacial interactions. Characterization results revealed that the MOF composite exhibited a high specific surface area of 101.379 m²/g with a hierarchical micro–mesoporous structure. After calcination, a mesopore-dominated Fe₂O₃/ZrO₂ heterostructure was obtained with a pore volume of 0.141 cm³/g and a surface area of 25.746 m²/g, facilitating molecular diffusion and active site availability. Methylene blue adsorption studies showed that Fe₂O₃/ZrO₂ possessed a high adsorption capacity and followed a pseudo-second-order kinetic model, with a Qe value of 59.26 mg/g. In heterogeneous Fenton degradation, the material achieved more than 99% methylene blue removal under optimal conditions and maintained stable performance over several reaction cycles. The synergistic effect between Fe₂O₃ as the active redox center and ZrO₂ as a structural stabilizer and electron-transfer mediator played a crucial role in enhancing reaction efficiency, indicating the strong potential of this material as a heterogeneous Fenton catalyst for wastewater treatment.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | MOF ligan campuran, Fe₂O₃/ZrO₂ berpori, heterostruktur oksida logam, adsorpsi, Fenton heterogen =============================== mixed-ligand MOFs, porous Fe₂O₃/ZrO₂, metal oxide heterostructure, adsorption, heterogeneous Fenton |
| Subjects: | Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD716 Photocatalysis. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47001-(S3) PhD Thesis |
| Depositing User: | Alvin Romadhoni Putra Hidayat |
| Date Deposited: | 03 Feb 2026 01:02 |
| Last Modified: | 03 Feb 2026 01:02 |
| URI: | http://repository.its.ac.id/id/eprint/131768 |
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