Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Physical and photocatalytic properties of sprayed Dy doped ZnO thin films under sunlight irradiation for degrading methylene blue

  • Identification data

    Identifier: imarina:9225569
    Authors:
    El Fidha, GBitri, NChaabouni, FAcosta, SGuell, FBittencourt, CCasanova-Chafer, JLlobet, E
    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.
  • Others:

    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
    Link to the original source: https://pubs.rsc.org/en/content/articlelanding/2021/RA/D1RA03967A
    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
    Article's DOI: 10.1039/d1ra03967a
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2021
    First page: 24917
    Publication Type: Journal Publications
  • Keywords:

    Chemical Engineering (Miscellaneous),Chemistry (Miscellaneous),Chemistry, Multidisciplinary
    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
    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
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