CD Skripsi

Sintesis Komposit Mnox/Abu Cangkang Kelapa Sawit Untuk Degradasi Metilen Biru: Variasi Suhu Kalsinasi

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Manganese oxide is an important compound in nature for the transformation of various compounds into simpler compounds. Manganese oxide in nature is generally mixed with fellow manganese oxide but has a different structure and other metal oxides so it is difficult to characterize. Synthesis of manganese oxide can be carried out using the sol-gel method. With this method, the structure of manganese oxide is determined by the mole ratio of the reactants, concentration and the addition of other compounds. The aim of this research is to examine the effect of calcination temperature on the characteristics and catalytic activity of MnOx/OPFA composites. The synthesis of the MnOx/OPFA composite was carried out by mixing KMnO4 with glucose and forming a gel. The gel formed is then mixed with activated OPFA. The crystal phase and purity level of MnOx in the composite were determined by XRD, while the lattice vibrations of Mn-O and Si-O were determined by FTIR and Raman. The surface area of the composite was analyzed using the BET method, the average oxidation level of Mn in the composite was analyzed using the back titration method and the pH at neutral surface charge was analyzed using pH zero point charge (pH zpc). The catalytic activity test was carried out by degrading Methylene Blue using the Fenton method. The Characterization results using XRD show that the MnOx/OPFA composite consists of a quartz phase and a mixed phase of manganese oxide such as managanosite, cryptomelane, hausmanite and binnerssite. FTIR characterization shows the presence of Mn-O lattice vibrations at peaks of 1560.48 cm-1 and 2365.79 cm-1 and Si-O lattice vibrations at peaks of 790.85 cm-1, 1156.37 cm-1 and 1870.07 cm-1. Raman characterization shows that Mn-O vibrations are in the Raman shift of 636.16 cm-1, while Si-O vibrations are in the range 100-480 cm-1. The surface area analyzed using the BET method shows that the surface area for MnOx is 11.223 m2/g and for the MnOx/OPFA composite is
278.541 m2/g. The average oxidation level of Mn in the MnOx/OPFA composite is 3.4602-3.6656. The pH zpc results show that the optimum pH conditions in the degradation process are pH 3-4. The results of the catalytic activity test on methylene blue showed that the MnOx/OPFA 650ºC composite could degrade

methylene blue by 91.95%. Based on the research results, the calcination temperature really determines the characteristics and catalytic activity of the MnOx/OPFA composite.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1803113437

Penerbit

Pekanbaru : Universitas Riau – FMIPA - Kimia., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1803113437

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

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