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Sintesis Komposit Mnox/Abu Cangkang Kelapa Sawit Melalui Metode Sol Gel Untuk Degradasi Metilen Biru: Variasi Massa Abu Cangkang
The manganese oxide mineral was an oxidizer which plays an important role in the transformation of various simpler compounds. This mineral was generally mixed with manganese oxide which has a different structure and other metal oxides. Manganese oxide is a term used to describe various types of manganese oxide such as MnO. MnO2O3. Mn3O4. and MnO2. Synthesis ohengf manganese oxide with various structures can be carried out using the sol gel method. The ratio of reactants and concentrations as well as the presence of other compounds during the reaction greatly influence the structure of the manganese oxide produced. The aim of this research was to examine the effect of shell ash mass on the characterization of the MnOx/OPFA composite and its catalytic activity. The synthesis of the MnOx/OPFA composite was carried out by mixing KMnO4 and glucose to form a gel, followed by the addition of OPFA (Oil Palm Fly Ash). The structure of MnOx in the composite was determined using XRD, while the lattice vibration of MnOx was determined using FTIR and Raman Spectroscopy and the surface area of the composite was analyzed using the BET method. Determination of the oxidation level of Mn in the composite by back titration and determination of the neutral charge of the composite were carried out using pHZpc. The results of 1. The results of Raman spectroscopy produced a Raman shift vibration of MnOx 636.16 cm-1. The surface area of MnOx is 11.223 m2/g and MnOx/OPFA is 278.541 m2/g. The average oxidation levels of Mn in the MnOx/ACKS composite are 3.3812 and 3.6814. At pHZpc the results show a pH of 4-4.8. MnOx/OPFA composite tested for catalytic activity of methylene blue degradation. Optimum methylene blue degradation was obtained under conditions of methylene blue concentration of 12.5 ppm. 5 mL volume H2O2 of and 25 mg composite mass. which showed that the catalyst mass had the most influence with a degradation percentage of 90.22% in 120 minutes.
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