Aulia, Wulan (2020) Sintesis Komposit Kitosan/UiO-66 dan Kinerjanya sebagai Adsorben Methyl Orange dalam Air. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
UiO-66 dan komposit kitosan/UiO-66 telah berhasil disintesis dengan variasi penambahan massa kitosan 2,5; 5; 10; dan 20% terhadap massa UiO-66, yang berturut-turut dinotasikan sebagai UiO-66, Cs(2,5)/UiO-66, Cs(5)/UiO-66, Cs(10)/UiO-66, Cs(20)/UiO-66. Sintesis UiO-66 dilakukan dengan metode solvotermal dalam pelarut DMF pada suhu 120 °C selama 24 jam. Modifikasi kitosan/UiO-66 dilakukan dengan metode impregnasi. Difraktogram material hasil sintesis menunjukkan puncak karakterisitik pada 2θ = 7,25 dan 8,39° yang sesuai dengan pola difraktogram UiO-66 standar. Spektra FTIR material hasil sintesis menunjukkan pita serapan pada bilangan gelombang yang sama dengan UiO-66 dan kitosan yang telah dilaporkan. Morfologi permukaan dari kitosan/UiO-66 berupa partikel kecil yang hampir sama dengan morfologi permukaan UiO-66. Hasil pengukuran dengan adsorpsi-desorpsi N2 menunjukkan bahwa SBET dari material UiO-66, Cs(5)/UiO-66 dan Cs(10)/UiO-66 berturut-turut sebesar 825,7; 835,4; 882,2 m2/g. Stabilitas termal dari UiO-66 dan Cs(10)/UiO-66 mencapai suhu 450 °C dan 440 °C. Hasil uji adsorpsi methyl orange menunjukkan bahwa Cs(5)/UiO-66 memiliki kapasitas adsorpsi tertinggi sebesar 370,37 mg/g serta mengikuti model kinetika orde dua semu dan isotermal Langmuir.
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UiO-66 and chitosan/UiO-66 composites have been succesfully synthesized with variations of chitosan mass 2,5%, 5%, 10% and 20% toward the mass of UiO-66, which are notated as UiO-66, Cs(2,5)/UiO-66, Cs(5)/UiO-66, Cs(10)/UiO-66 and Cs(20)/UiO-66. Synthesis of UiO-66 was carried out by the solvothermal method in DMF solvents at a temperature of 120ºC for 24 hours. Modification of chitosan/UiO-66 composites was carried out by impregnation. Diffractogram patterns of the obtained solids showed characteristic peaks at 2θ of 7.25° and 8.39°, similar to that of reported UiO-66. FTIR spectra of solids showed absorption bands at the same wavenumbers as reported for UiO-66 and chitosan. The surface morphology of chitosan/UiO-66 had the same shape as the UiO-66. The results of the of N2 adsorption-desorption isotherms UiO-66, Cs (5)/UiO-66 and Cs(10)/UiO-66 show that SBET were 825.7; 835.4; 882.2 m2/g. The thermal stability of UiO-66 and Cs(10)/UiO-66 reached temperature of 450 °C and 440 °C. The results of the adsorption methyl orange (MO) showed that Cs(5)/UiO-66 had the highest adsorption capacity of 370.37 mg/g by following the pseudo second order adsorption kinetics and isothermal adsorption Langmuir.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSKi 573.774 Aul s-1 2020 |
| Uncontrolled Keywords: | UiO-66, Kitosan, Komposit Kitosan/UiO-66, Adsorpsi, Methyl orange |
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology > TP248.65.C55 Chitosan--Biotechnology. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Wulan Aulia |
| Date Deposited: | 08 May 2023 02:02 |
| Last Modified: | 05 Apr 2024 07:11 |
| URI: | http://repository.its.ac.id/id/eprint/73199 |
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