Sintesis Komposit Kitosan/ZnO/UiO-66 sebagai Material Fotokatalis untuk Penghilangan Methyl Orange dalam Air

Fitriana, Ulfa Miki (2021) Sintesis Komposit Kitosan/ZnO/UiO-66 sebagai Material Fotokatalis untuk Penghilangan Methyl Orange dalam Air. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Material Kitosan/ZnO/UiO-66 telah berhasil disintesis, yang diawali dengan sintesis UiO-66 menggunakan metode solvotermal dalam pelarut DMF pada suhu 120 °C selama 24 jam, serta sintesis ZnO menggunakan metode kopresipitasi. Modifikasi kerangka UiO-66 dengan penambahan ZnO sebesar 5, 7 dan 10% b/b terhadap massa total ZnO/UiO-66, serta penambahan kitosan sebesar 5% b/b terhadap massa total ZnO/UiO-66 dilakukan secara impregnasi bertahap. Material hasil sintesis berturut-turut dinotasikan sebagai UiO-66, CS/ZnO(5)/UiO-66, CS/ZnO(7)/UiO-66 dan CS/ZnO(10)/UiO-66. Difraktogram material hasil sintesis menunjukkan puncak karakterisitik pada 2θ = 7,21° dan 8,33° 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 ZnO standar. Morfologi permukaan dari Kitosan/ZnO/UiO-66 berupa butiran kristal/partikel yang teraglomerasi mirip dengan UiO-66 standar namun tidak beraturan dan kasar. Hasil uji fotokatalitik untuk penghilangan methyl orange menunjukkan bahwa CS/ZnO(5)/UiO-66 memiliki nilai % removal tertinggi sebesar 81,01% dengan dosis fotokatalis 10 mg dalam 20 mL larutan MO 25 mg/L. ===================================================================================================== Chitosan/ZnO/UiO-66 materials have been successfully synthesized, starting with the synthesis of UiO-66 using the solvothermal method in DMF solvent at 120 °C for 24 hours, and the synthesis of ZnO using the coprecipitation method. Modification of UiO-66 framework with the addition of 5, 7 and 10% w/w ZnO to the total mass of ZnO/UiO-66, and the addition of 5% w/w chitosan to the total mass of ZnO/UiO-66 was carried out by impregnation in stages. The synthesized materials are denoted as UiO-66, CS/ZnO(5)/UiO-66, CS/ZnO(7)/UiO-66 and CS/ZnO(10)/UiO-66. The diffractogram of the synthesized materials showed characteristic peaks at 2θ = 7.21° and 8.33° similar to that of reported UiO-66 diffractogram. FTIR spectra of the synthesized materials showed absorption bands at the same wavenumber as standard UiO-66 and ZnO. The surface morphology of Chitosan/ZnO/UiO-66 had the form of agglomerated crystals/particles similar to the standard UiO-66 but irregular and rough. The results of the photocatalytic methyl orange showed that CS/ZnO(5)/UiO-66 had the highest % removal of 81.01% with a photocatalyst dose of 10 mg in 20 mL of 25 mg/L MO solution.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: UiO-66, ZnO, Kitosan, Fotokatalitik, Methyl Orange, UiO-66, ZnO, Chitosan, Photocatalytic, Methyl Orange
Subjects: Q Science > QD Chemistry > QD181.Z6 Zinc oxide
Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User: Ulfa Miki Fitriana
Date Deposited: 25 Aug 2021 03:18
Last Modified: 25 Aug 2021 03:18
URI: https://repository.its.ac.id/id/eprint/89281

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