University of Twente Student Theses


Electrospinning and characterization of ZrO2 nanofibers functionalized with palladium sites

Dan, C. (2022) Electrospinning and characterization of ZrO2 nanofibers functionalized with palladium sites.

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Abstract:The support material often limits heterogeneous catalysis via mass transfer, diffusion, and consequentially reaction rates. To address this issue, the chemical industry often has to develop new ways to support a metal catalyst by introducing different structures and materials. One such structure are nanofibers due to their ability to minimize diffusion within the support material. This study presents a fabrication method of nanofibers made from a very underused material, such as zirconia, doped with palladium. The zirconia nanofibers or ZNFs prepared via the in-situ method, show a characteristic fiber structure ranging from 56 to 41 nm in average diameter. The prepared nanofibers, have been found to be in a mix of tetragonal and monoclinic phases, mainly tetragonal, with higher concentrations of monoclinic phase at the surface fibers. XPS and EDS have proved the presence of palladium sites on the surface of the fibers. Additionally, the palladium salt concentration was found to lower the average fiber’s diameter, further aiding in increasing the surface-to-volume ratio.
Item Type:Essay (Bachelor)
Faculty:TNW: Science and Technology
Subject:35 chemistry, 51 materials science
Programme:Chemical Engineering BSc (56960)
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