000086839 001__ 86839
000086839 005__ 20200108151739.0
000086839 037__ $$aTAZ-TFM-2019-275
000086839 041__ $$aeng
000086839 1001_ $$aCoba Daza, Jorge Sebastián
000086839 24200 $$aSynthesis and characterization of electrospun oxide fibers for catalytic applications
000086839 24500 $$aSíntesis y caracterización de fibras de óxidos a través de electrospinning para aplicaciones en catálisis
000086839 260__ $$aZaragoza$$bUniversidad de Zaragoza$$c2019
000086839 506__ $$aby-nc-sa$$bCreative Commons$$c3.0$$uhttp://creativecommons.org/licenses/by-nc-sa/3.0/
000086839 520__ $$aElectrospinning is a versatile technique that uses an electrical charge to produce very fine<br />fibers from a polymeric solution. It has very high potential to be applied in different fields as<br />in energy storage, in medicine, in cosmetics and in catalysis. Electrospinning is cost effective,<br />reproducible and it can produce long and continuous nanofibers. Polymers such polyamides,<br />polyalcohol and PVP among others, can be easily electrospun. The use of inorganic<br />nanofibers obtained from template-based electrospun polymers is increasing because their<br />performance in different applications due to the high surface to volume ratio.<br />In this work three different nanofibers (Ce2O/NiO, CeO2/NiO/MgO and TiO2-doped-Fe2O3<br />NP) were synthesized trough electrospinning process followed by a calcination process. The<br />processing conditions such as voltage applied and feed rate in the electrospinning process<br />were studied to find the best conditions for uniform fibers production. The calcination<br />process was performed to completely oxidize the organic PVP present and promote the<br />growth of the oxide nanoparticles that form the nanofiber.<br />Characterization techniques such as scanning electron microscopy (SEM), energy dispersive<br />X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction<br />(XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA),<br />microwave plasma-atomic emission spectroscopy (MP-AES), temperature programmed<br />reduction (TPR), dynamic light scattering (DLS) and UV-vis spectroscopy were used to<br />study the morphology, chemical and crystal characteristics of the samples. This work<br />discusses the possibility to future use of the different synthesized nanofibers in the<br />applications in catalysis for the CO2 methanation reaction (CeO2/NiO and CeO2/NiO/MgO<br />nanofibers) and the water pollutants removal (TiO2-dop-Fe2O3 NP)<br /><br />
000086839 521__ $$aMáster en Materiales Nanoestructurados para Aplicaciones Nanotecnológicas (Nanostructured Materials for Nanotechnology Applications)
000086839 540__ $$aDerechos regulados por licencia Creative Commons
000086839 700__ $$aIrusta Alderete, Silvia$$edir.
000086839 7102_ $$aUniversidad de Zaragoza$$bIngeniería Química y Tecnologías del Medio Ambiente$$cTecnologías del Medio Ambiente
000086839 8560_ $$f792210@celes.unizar.es
000086839 8564_ $$s1935386$$uhttps://zaguan.unizar.es/record/86839/files/TAZ-TFM-2019-275.pdf$$yMemoria (eng)
000086839 909CO $$ooai:zaguan.unizar.es:86839$$pdriver$$ptrabajos-fin-master
000086839 950__ $$a
000086839 951__ $$adeposita:2020-01-08
000086839 980__ $$aTAZ$$bTFM$$cCIEN
000086839 999__ $$a20190627124552.CREATION_DATE