Structure · dataset · 2018
Synthesis and characterization of iron photocatalysts supported on microporous zeolites
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ABSTRACT ZSM11 and BETA zeolitic materials were synthesized by the hydrothermal method and were further impregnated with a 6 wt% of iron and characterized by different physicochemical techniques in order to be employed in the photocatalytic degradation of methyl orange (MO).
Description
Matrices structures and crystallinity were verified by X Ray Diffraction (XRD) and Fourier Transformed Infrared Spectroscopy (FTIR), even for modified zeolites.
XRD patterns showed the characteristic signals at 2θ=7, 9, 23 and 24° for ZSM11 matrix, and 2θ= 7-8° and 21- 22°, for BETA. According to BET results, specific surface area were 392 m2/g for ZSM11 and 585 m2/g for BETA. In both cases, an area reduction with metal incorporation were obtained.
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Iron con-tent was confirmed by Atomic Absorption (AA) spectroscopy, finding similar values than the theoretical ones. Additionaly, iron signals (0,5 y 6,5 KeV) were detected by SEM EDX. Band gap energies of the materials were calculated employing Diffuse Reflectance Spectroscopy- UVvis (DRS-UVvis), obtaining similar values than α-Fe2O3.
A reduction of the band gap energy in comparison with the correspondent material was also found by this technique. The materials were further evaluated as catalysts for MO photodegradation obtaining a 96 % and 56% of degradation for Fe-ZSM11 and Fe-BETA, respectively.
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- DOI doi.org/10.6084/m9.figshare.6857330.v1 ↗
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- IsSupplementTo 10.1590/s1517-707620180002.0450 doi.org/10.1590/s1517-707620180002.0450 ↗
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Topics
- Stated by source
- Civil engineering · Materials engineering
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| Source | Key | Last seen | Raw |
|---|---|---|---|
| DataCite | 10.6084/m9.figshare.6857330.v1 | 12 d ago | JSON v1 |
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| concepts[field].fos:materials-engineering | source · DataCite | connector:datacite@1.0.0 | |
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