Sintesis Seng Oksida Menggunakan Metode Poliol dan Pemodelan Aktivitas Fotokatalitik

Choir, Arini Amalia (2020) Sintesis Seng Oksida Menggunakan Metode Poliol dan Pemodelan Aktivitas Fotokatalitik. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Seng oksida (ZnO) disintesis dengan metode poliol dan dilakukan pemodelan untuk memprediksi aktivitas fotokataliiknya. Seng oksida (ZnO) dikarakterisasi dengan SEM. Hasil karakterisasi menunjukkan kristal sferis berukuran partikel 100–200 nm dan kristal rod berukuran partikel panjang 300-500 nm. Kemudian dilakukan pemodelan aktivitas fotokatalitik menggunakan antrasen, metilen biru, dan metil orange. Pengaruh bentuk dan ukuran partikel seng oksida terhadap aktivitas fotokatalitik dilakukan dengan pemodelan aktivitas fotodegradasi antrasena. Kemudian antrasena, metilen biru, dan metil orange dibandingkan untuk mengetahui pengaruh zat yang didegradasi terhadap aktivitas fotokatalitik. Studi kinetika reaksi fotokatalisis antrasena mengikuti hukum laju reaksi orde satu. Harga k yang didapat untuk seng oksida nanosferis dan nanorod masing-masing sebesar 0,005 min-1 dan 0,001 min-1. Hasil menunjukkan adanya efisiensi degradasi yang lebih besar pada seng oksida nanosferis. Perbandingan aktivitas fotodegradasi antrasena, metilen biru, dan metil orange menghasilkan data bahwa metilen biru unggul dengan degradasi sebesar 94% setelah 16 menit penyinaran. Hasil tersebut mengindikasikan bahwa degradasi pada senyawa metilen biru memiliki kapolaran dan interaksi elektrostatik yang lebih baik daripada antrasena. ========================================================= Zinc oxide (ZnO) is synthesized by the polyol method and modeling is carried out to predict its photocatalytic activity. Zinc oxide (ZnO) is characterized by SEM. The characterization results showed spherical crystals of particle size of 100-200 nm and rod crystals of particle size of 300-500 nm in length. The photocatalytic activity modeling is carried out using anthracene, methylene blue, and methyl orange. The effect of the shape and size of zinc oxide particles on photocatalytic activity was carried out by modeling anthracene photodegradation activity. Anthracene, methylene blue, and methyl orange are compared to determine the effect of degraded substances on photocatalytic activity. The kinetics study of anthracene photocatalysis reactions follows the first order rate reaction law. The k values obtained for nanospheric zinc oxide and nanorod were 0.005 min-1 and 0.001 min-1, respectively. The results show a greater degradation efficiency in nanospheric zinc oxide. Then, the comparison of anthracene, methylene blue and methyl orange photodegradation activities were shown that methylene blue was superior with a degradation of 94% after 16 minutes of exposure. These results indicate that degradation of the methylene blue compound has a better polarization and electrostatic interaction than anthracene.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Fotokatalitik, Fotodegradasi, Seng Oksida, Antrasena, Metilen biru, Metil orange Photocatalysis, Photodegradation, Zinc Oxide, Anthracene, Methylene blue, Metyhl orange
Subjects: Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User: Arini Amalia Choir
Date Deposited: 24 Aug 2020 04:21
Last Modified: 24 Aug 2020 04:21
URI: https://repository.its.ac.id/id/eprint/79936

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