Web of Science: 5 citations, Scopus: 3 citations, Google Scholar: citations
Nanoporous Fe-based alloy prepared by selective dissolution : an effective Fenton catalyst for water remediation
Zhang, Huiyan (Universitat Autònoma de Barcelona. Departament de Física)
Feng, Yuping (Universitat Autònoma de Barcelona. Departament de Física)
Cheng, Yangyang (Beijing hang kong hang tian da xue. School of Materials Science and Engineering)
Baró, M. D. (Universitat Autònoma de Barcelona. Departament de Física)
Altube, Ainhoa (IK4-CIDETEC. Unidad de Superfícies Metálicas)
García-Lecina, Eva (IK4-CIDETEC. Unidad de Superfícies Metálicas)
Alcaide, Francisco (IK4-CIDETEC. Unidad de Materiales para Energía)
Pellicer Vilà, Eva M. (Eva Maria) (Universitat Autònoma de Barcelona. Departament de Física)
Zhang, Tao (Beijing hang kong hang tian da xue. School of Materials Science and Engineering)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)

Date: 2017
Abstract: A fully nanoporous Fe-rich alloy, prepared by selective dissolution of melt-spun Fe₄₃. ₅Cu₅₆. ₅ ribbons, exhibits outstanding properties as a heterogeneous Fenton catalyst toward the degradation of methyl orange (MO) in aqueous solution. In addition, the ferromagnetic characteristics of this material enable its wireless manipulation toward specific locations within polluted wastewater. The influence of selective dissolution on the microstructure, sample morphology (surface and cross-section), elemental composition, and magnetic properties of the resulting nanoporous alloy is investigated. The dealloying procedure enhances the saturation magnetization and drastically increases the catalytic performance (i. e. , the time required for full degradation of MO from the medium is reduced by a factor of approximately 2 by subjecting the Fe43. 5Cu56. 5 ribbons to prior dealloying). Remarkably, the effectiveness of this nanoporous material surpasses the results obtained by the homogeneous Fenton reaction using an equivalent concentration of Fe cations leached into the media from the nanoporous alloy. The different factors that promote the high catalytic activity are discussed. The outstanding catalytic activity, together with the simplicity of the synthetic procedure, makes this material very appealing for water remediation using advanced Fenton processes.
Note: Número d'acord de subvenció MINECO/MAT2014-57960-C3-1-R
Note: Número d'acord de subvenció MINECO/MAT2014-57960-C3-2-R
Note: Número d'acord de subvenció MINECO/CTQ2013-48897-C2-2-R
Note: Número d'acord de subvenció MINECO/RYC-2012-10839
Note: Número d'acord de subvenció AGAUR/2014/SGR-1015
Rights: Tots els drets reservats
Language: Anglès.
Document: article ; recerca ; acceptedVersion
Published in: ACS omega, Vol. 2, issue 2 (Feb. 2017) , p. 653−662, ISSN 2470-1343

DOI: 10.1021/acsomega.7b00043


Postprint
35 p, 2.8 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Articles > Research articles
Articles > Published articles

 Record created 2018-04-18, last modified 2019-02-02



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