000124370 001__ 124370
000124370 005__ 20241125101130.0
000124370 0247_ $$2doi$$a10.1016/j.matdes.2023.111615
000124370 0248_ $$2sideral$$a132684
000124370 037__ $$aART-2023-132684
000124370 041__ $$aeng
000124370 100__ $$aFuentes-García, J.A.$$uUniversidad de Zaragoza
000124370 245__ $$aMagnetic nanofibers for remotely triggered catalytic activity applied to the degradation of organic pollutants
000124370 260__ $$c2023
000124370 5060_ $$aAccess copy available to the general public$$fUnrestricted
000124370 5203_ $$aThis work reports on the fabrication and characterization of a novel type of electrospun magnetic nanofibers (MNFs), and their application as a magnetically-activable catalysts for degradation of organic pollutants. The magnetic stimulation capability for the catalytic action is provided by iron-manganese oxide (MnxFe2-xO4) magnetic nanoparticles (MNPs) embedded into electrospun polyacrylonitrile (PAN), which provides stability and chemical resistance. The MNPs (average size d = 40 ± 7 nm) were first obtained by a green and fast sonochemical route, and subsequently embedded into electrospun PAN nanofibers. The final MNFs showed an average diameter of 760 ± 150 nm, providing a superhydrophobic surface with contact angle (θc = 165°), as well as a considerable amount ( 50 % wt.) of embedded MNPs (Mn0.5Fe2.5O4), thermally stable up to temperatures of 330 °C. The catalytic Fe2+/3+/Mn2+/3+/4+ active centers on the MNPs of MNF’s surface could be remotely activated by alternating magnetic fields (AMF) to degrade the methyl blue (MB). Remarkable stability of the MNFs during heating under extreme pH conditions (3 < pH < 10) was observed along several catalytic cycles. The degradation kinetics in presence of hydrogen peroxide showed followed the Langmuir–Hinshelwood model with an average efficiency > 80 %, after several cycles of reusing the same sample without any regeneration process. The capacity of these materials as a catalytic material with magnetic remote activation makes them appealing for those catalytic applications under conditions of darkness or restrained access, where photocatalytic reaction cannot be achieved.
000124370 536__ $$9info:eu-repo/grantAgreement/EC/H2020/101007629 /EU/Nanomaterials for Enzymatic Control of Oxidative Stress Toxicity and Free Radical Generation/NESTOR$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101007629 -NESTOR$$9info:eu-repo/grantAgreement/ES/MICIU/PDC2021-121409-I00$$9info:eu-repo/grantAgreement/ES/MICIU/PID2019-106947RB-C21
000124370 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000124370 590__ $$a7.6$$b2023
000124370 592__ $$a1.684$$b2023
000124370 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b80 / 439 = 0.182$$c2023$$dQ1$$eT1
000124370 593__ $$aMaterials Science (miscellaneous)$$c2023$$dQ1
000124370 593__ $$aMechanics of Materials$$c2023$$dQ1
000124370 593__ $$aMechanical Engineering$$c2023$$dQ1
000124370 594__ $$a14.3$$b2023
000124370 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000124370 700__ $$aSanz, B.
000124370 700__ $$0(orcid)0000-0002-4758-9380$$aMallada, R.$$uUniversidad de Zaragoza
000124370 700__ $$0(orcid)0000-0003-0681-8260$$aIbarra, M.R.$$uUniversidad de Zaragoza
000124370 700__ $$0(orcid)0000-0003-1558-9279$$aGoya, G.F.$$uUniversidad de Zaragoza
000124370 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000124370 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000124370 773__ $$g226 (2023), 111615 [9 pp.]$$pMater. des.$$tMaterials & design$$x0264-1275
000124370 8564_ $$s1752989$$uhttps://zaguan.unizar.es/record/124370/files/texto_completo.pdf$$yVersión publicada
000124370 8564_ $$s2035827$$uhttps://zaguan.unizar.es/record/124370/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000124370 909CO $$ooai:zaguan.unizar.es:124370$$particulos$$pdriver
000124370 951__ $$a2024-11-22-11:58:44
000124370 980__ $$aARTICLE