Author, as appears in the article.: El Fidha, G; Bitri, N; Chaabouni, F; Acosta, S; Guell, F; Bittencourt, C; Casanova-Chafer, J; Llobet, E
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Casanova Chafer, Juan / Llobet Valero, Eduard
Keywords: Zinc-oxide Zinc oxide Thin films Sunlight irradiation Substrates Spray pyrolysis Solar-light-driven Solar irradiation Sensing properties Semiconductor doping Scanning electron microscopy Polycrystalline thin film Photoluminescence spectroscopy Photoluminescence Photoelectron spectroscopy (xps) Photoelectron spectroscopy Photocatalytic property Photocatalytic activity Oxide minerals Oxide films Optical-properties Optical films Nd Nanowires Nanostructures Nanoparticles Metallic films Irradiation Ii-vi semiconductors Gas sensor Dysprosium compounds Doped zno thin films Degradation Crystallographic structure Atomic force microscopy
Abstract: Dysprosium-doped zinc oxide (ZnO) thin films have been prepared through spray pyrolysis onto glass substrates. Cross-sections of the deposited thin films were assessed through Scanning Electron Microscopy (SEM), showing thicknesses between 200 and 300 nm. The thin film roughness was evaluated using the obtained images from the Atomic Force Microscope (AFM) micrographs. The crystallographic structure of the samples was analyzed by X-ray diffraction (XRD) revealing polycrystalline thin films. However, the slight shift towards a higher 2 theta angle in Dy-doped ZnO films as compared to the pure ones indicates the incorporation of Dy3+ into the ZnO crystal lattice. The analysis of the oxidation state via X-ray photoelectron spectroscopy (XPS) confirms the incorporation of Dy ions in the ZnO matrix. Besides, UV-Vis-NIR spectrophotometry analysis and photoluminescence (PL) spectroscopy showed that bandgap energy values of ZnO decreased when dysprosium doping increased. Therefore, Dy doped ZnO thin films can be potentially used as a solar-light-driven photocatalyst. Among the different doping yields, the ZnO doped with 6% dysprosium provides the highest degradation rate for methylene blue (MB) under solar irradiation. Specifically, 9% of dye degradation was achieved under sunlight irradiation for 120 minutes.
Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Odontología Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Interdisciplinar Geociências General chemistry General chemical engineering Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Biodiversidade Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: juan.casanova@urv.cat eduard.llobet@urv.cat
Author identifier: 0000-0001-6164-4342
Last page: 24925
Record's date: 2024-10-12
Journal volume: 11
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Rsc Advances. 11 (40): 24917-24925
APA: El Fidha, G; Bitri, N; Chaabouni, F; Acosta, S; Guell, F; Bittencourt, C; Casanova-Chafer, J; Llobet, E (2021). Physical and photocatalytic properties of sprayed Dy doped ZnO thin films under sunlight irradiation for degrading methylene blue. Rsc Advances, 11(40), 24917-24925. DOI: 10.1039/d1ra03967a
Entity: Universitat Rovira i Virgili
Journal publication year: 2021
First page: 24917
Publication Type: Journal Publications
Repositori URV