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| Abstract or Summary |
- A new Fe-based metallic glass with composition Fe₇₆B₁₂Si₉Y₃ (at. %) is found to have extraordinary
degradation efficiency towards methyl orange (MO, C₁₄H₁4N₃SO₃) in strong acidic and near neutral
environments compared to crystalline zero-valent iron (ZVI) powders and other Fe-based metallic
glasses. The influence of temperature (294–328 K) on the degradation reaction rate was measured using
ball-milled metallic glass powders revealing a low thermal activation energy barrier of 22.6 kJ/mol. The
excellent properties are mainly attributed to the heterogeneous structure consisting of local Fe-rich and
Fe-poor atomic clusters, rather than the large specific surface and strong residual stress in the powders.
The metallic glass powders can sustain almost unchanged degradation efficiency after 13 cycles at room
temperature, while a drop in degradation efficiency with further cycles is attributed to visible surface
oxidation. Triple quadrupole mass spectrometry analysis conducted during the reaction was used to
elucidate the underlying degradation mechanism. The present findings may provide a new, highly
efficient and low cost commercial method for azo dye wastewater treatment.
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| Citation |
- Xie, S., Huang, P., Kruzic, J. J., Zeng, X., & Qian, H. (2016). A highly efficient degradation mechanism of methyl orange using Fe-based metallic glass powders. Scientific Reports, 6, 21947. doi:10.1038/srep21947
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| Additional Information |
- description.provenance : Submitted by Patricia Black (patricia.black@oregonstate.edu) on 2016-03-17T15:04:22Z
No. of bitstreams: 2
license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5)
XieHighlyEfficientDegradation.pdf: 1615522 bytes, checksum: 31e54a97da4f69a1a073b2d7bed9c5df (MD5)
- description.provenance : Made available in DSpace on 2016-03-17T15:04:50Z (GMT). No. of bitstreams: 2
license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5)
XieHighlyEfficientDegradation.pdf: 1615522 bytes, checksum: 31e54a97da4f69a1a073b2d7bed9c5df (MD5)
Previous issue date: 2016-02-23
- description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-03-17T15:04:50Z (GMT) No. of bitstreams: 2
license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5)
XieHighlyEfficientDegradation.pdf: 1615522 bytes, checksum: 31e54a97da4f69a1a073b2d7bed9c5df (MD5)
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