Characterization and Photocatalytic Evaluation of Fe-Loaded Mesoporous MCM-41 Prepared Using Iron and Silicon Sources Extracted from Iron Ore Tailing

The objective of this study was to recover valuable elements such as iron and silicon from iron ore tailings and convert them into value-added mesoporous materials such as MCM-41 and Fe-loaded MCM-41 (Fe/MCM-41). The synthesized samples were systematically characterized by X-ray diffraction, scannin...

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Bibliographic Details
Published inWaste and biomass valorization Vol. 11; no. 4; pp. 1491 - 1498
Main Authors Deng, Yanxi, Xu, Xiaodong, Wang, Rong, Zhao, Yang
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.04.2020
Springer Nature B.V
Subjects
Aqueous solutions
Catalytic activity
Degradation
Electron microscopes
Electron microscopy
Engineering
Environment
Environmental Engineering/Biotechnology
Evaluation
Industrial Pollution Prevention
Iron
Iron compounds
Iron ores
Irradiation
Light irradiation
Methylene blue
Microscopy
Mine tailings
Original Paper
Photocatalysis
Photoelectron spectroscopy
Photoelectrons
Renewable and Green Energy
Scanning electron microscopy
Silicon
Transmission electron microscopy
Waste Management/Waste Technology
X-ray diffraction
Photocatalytic degradation
Fe-loaded MCM-41
Mesoporous structure
Iron ore tailings
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Summary:The objective of this study was to recover valuable elements such as iron and silicon from iron ore tailings and convert them into value-added mesoporous materials such as MCM-41 and Fe-loaded MCM-41 (Fe/MCM-41). The synthesized samples were systematically characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N 2 adsorption–desorption measurements, and X-ray photoelectron spectroscopy. It was found that the MCM-41 structure was well-preserved after Fe loading, but its specific surface area decreased. The photocatalytic activity of Fe/MCM-41 toward the degradation of methylene blue (MB) aqueous solution was evaluated. The results indicated that all the Fe/MCM-41 samples (with different Fe loadings) were effective for the degradation of MB under visible-light irradiation and that the Fe/MCM-41 sample with Fe content of 5% exhibited the highest photocatalytic activity.
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-018-0460-1