Title: Nanofiber immobilized CeO2/dendrimer nanoparticles : an efficient photocatalyst in the visible and the UV
Authors : Mousavi, Sara
Shahraki, Farhad
Aliabadi, Majid
Haji, Aminoddin
Deuber, Fabian
Adlhart, Christian
Published in : Applied Surface Science
Publisher / Ed. Institution : Elsevier
Issue Date: 2019
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Ceria; Electrospinning; Dendrimer; Photocatalysis; Visible light; Fluorescence spectroscopy
Subject (DDC) : 540: Chemistry
Abstract: The contribution of a nanofiber based support and dendrimer coating on the visible light photocatalytic activity of CeO2 (ceria) nanoparticles towards phenol and azorubine dye was investigated. CeO2 nanoparticles were immobilized on electrospun nanofiber mats obtained from pullulan/poly(vinyl alcohol)/poly(acrylic acid) (Pul/PVA/PAA) blends and the CeO2 surface was modified with generation 3.0 PAMAM dendrimer. The catalytic activity was studied between pH 4 and 11 and it was compared with free CeO2- and free TiO2-nanoparticles for reference. The supported catalyst was photocatalytically active towards both phenol and azorubine and immobilization increased its reactivity by a factor of three. The mat type nature of the immobilized catalyst was also beneficial for simple recycling. XPS spectra revealed the presence of a Ce3+ state and the formation of hydroxyl radicals was shown using fluorescence spectroscopy.
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Publication type: Article in scientific Journal
DOI : 10.1016/j.apsusc.2019.02.119
ISSN: 0169-4332
URI: https://digitalcollection.zhaw.ch/handle/11475/15514
Appears in Collections:Publikationen Life Sciences und Facility Management

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