CD Skripsi

Pengaruh Doping Cobalt Terhadap Sifat Struktur Nanopartikel Oksida Besi Dan Aplikasi Untuk Degradasi Methylene Blue

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ABSTRACT
Magnetic nanoparticles such as hematite (α-Fe2O3) are used as a catalyst to degrade methylene blue in aqueous solution. Magnetic nanoparticles were obtained from natural sand in Logas Village, Kuantan Singingi Regency, Riau Province through a ball milling process. Natural sand was dried under the sun prior to the Iron Separator (ISS) Process. The iron oxide and non-iron oxide particles from the ISS were separated again using a Neodymium Iron Boron (NdFeB) magnet and then milled using the Ball Milling method for 50 hours. Ball milling products were separated again using NdFeB magnets. This product is called product BM1. The BM1 product was ball milled for 50 hours and then separated again using a NdFeB magnet. The product is called product BM2. The product is divided into 3 parts with the same amount, labeled as BM2A, BM2B and BM2C. Each product BM2A, BM2B and BM2C is Cobalt doped with a doping of 0 wt.%; 5 wt.% and 10 wt.% and milled for 20 hours. These products were named as BM3A, BM3B and BM3C products. Crystal size and structure and element identification of BM2 were determined using X-ray Diffractometer (XRD) and X-ray Fluorescence (XRF). The results showed that the BM2 product contained a hematite phase (α-Fe2O3) with a Rhombohedral crystal structure. The crystal size decreases with increasing Cobalt concentration. Before doping, the Fe element had a concentration of 52.139% while after Cobalt 5 wt.% Fe doping the concentration became 45.468%. Other elements such as Ti, Mn, Si, P, Ca, Cr, Zn, Ag, and Pb also decreased. The ability of magnetic nanoparticles (BM2 product) as a catalyst was evaluation UV-Vis spectroscopy. It showed a poor ability to degrade methylene blue in aqueous solution. The best efficiency when hematite is Cobalt doped 0 wt.%; 5 wt.% and 10 wt.% at 120 minutes are 98.273% ,58.928% and 75.096% respectively.
Keywords : Ball Milling, magnetic nanoparticles, hematite (α-Fe2O3), crystals, diffraction, X-rays, degradation, methylene blue

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1903124598

Penerbit

Pekanbaru : Universitas Riau - FMIPA - Fisika., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1903124598

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

TIAR

Versi lain/terkait

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