Sopiah, R. Nida (2026) Sintesis Komposit Hierarkis ZIF-8/MCM-41 Berbasis Abu Layang Insinerasi Sampah Perkotaan Untuk Adsorpsi Metilen Biru Dan Kajian Mekanisme Adsorpsi. Doctoral thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Abu layang hasil insinerasi sampah perkotaan (municipal olid waste incineration fly ash, MSWI FA), berhasil dimanfaatkan sebagai sumber silika untuk sintesis material berpori. Sintesis fusi alkali-hidrotermal menggunakan setiltrimetilamonium bromida (CTAB) sebagai templat menghasilkan MCM-41 berstruktur mesopori heksagonal teratur, sedangkan sintesis ZIF-8 pada suhu kamar dalam media air menghasilkan kristal berkerangka sodalit. Komposit hierarkis ZIF-8/MCM-41 dengan kandungan MCM-41 sebesar 5, 10, dan 20% (b/b), dinotasikan M5Z, M10Z, dan M20Z, menunjukkan peningkatan adsorpsi metilen biru dengan tetap mempertahankan struktur sodalit ZIF-8. MCM-41 berbasis MSWI FA memiliki luas permukaan 847,15 m2g-1, volume mesopori 0,77 cm3g-1, dan diameter pori rata-rata 3,03 nm. Komposit ZIF-8/MCM-41 menunjukkan luas permukaan 656,09-704,50 m2g-1 lebih tinggi daripada ZIF-8 murni (643,91 m2g-1). Keberadaan mesopori MCM-41 memfasilitasi difusi molekul metilen biru ke dalam saluran pori sehingga meningkatkan kapasitas adsorpsi dari 28,31 mg g-1 ( ZIF-8) menjadi 67,78 mg g-1(M20Z). Adsorpsi mengikuti model pseudo-orde dua (R2 = 0,982 - 1,000) melalui interaksi multilapis pada permukaan mikro- dan mesopori, yang didominasi oleh gaya tarik elektrosatik dan didukung oleh interaksi π–π serta ikatan hidrogen.
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Municipal solid waste incineration fly ash (MSWI FA) was successfully utilized as a silica source for the synthesis of porous materials. Alkali fusion-hydrothermal synthesis using cetyltrimethylammonium bromide (CTAB) as a template produced MCM-41 with an ordered hexagonal mesoporous structure, while ZIF-8 synthesized at room temperature in an aqueous medium formed sodalite-type framework crystals. Hierarchical ZIF-8/MCM-41 composites containing 5, 10, and 20 wt% MCM-41 (denoted as M5Z, M10Z, and M20Z) exhibited enhanced methylene blue adsorption while preserving the sodalite structure of ZIF-8. The MSWI FA-derived MCM-41 exhibited a specific surface area of 847.15 m2g-1, a mesoporous volume of 0.77 cm3g-1, and an average pore diameter of 3.03 nm. The ZIF-8/MCM-41 composites showed specific surface areas ranging from 656.09 to 704.50 m2g-1, which were higher than that of pristine ZIF-8 (643.91 m2g-1). Incorporation of MCM-41 increased adsorption capacity from 28.31 mg g-1 (ZIF-8) to 67.78 mg g-1 (M20Z). The adsorption process followed the pseudo-second-order kinetic model (R2 = 0.982 - 1.000) and occurred via multilayer interaction on micro- and mesoporous surfaces, dominated by electrostatic attraction and supported by π–π interactions and hydrogen bonding
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | abu layang insinerator sampah (MSWI FA), MCM-41, ZIF-8, komposit hierarkis, adsorpsi metilen biru municipal solid waste incineration fly ash (MSWI FA), MCM-41, ZIF-8, hierarchical composite, methylene blue adsorption |
| Subjects: | Q Science > QD Chemistry > QD251.2 Chemistry, Organic. Biochemistry Q Science > QD Chemistry > QD502 Chemical kinetics |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47001-(S3) PhD Thesis |
| Depositing User: | R. Nida Sopiah |
| Date Deposited: | 05 Aug 2026 07:47 |
| Last Modified: | 05 Aug 2026 07:47 |
| URI: | http://repository.its.ac.id/id/eprint/144071 |
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