Structural, Optical, and Photocatalytic Activities of Ag-Doped and Mn-Doped ZnO Nanoparticles
Joint Authors
Nigussie, Gebretinsae Yeabyo
Ashebir, Mengstu Etay
Tesfamariam, Gebrekidan Mebrahtu
Gebreab, Tesfakiros Woldu
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-03
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
We report the photocatalytic activities of ZnO, Ag-doped ZnO, and Mn-doped ZnO nanoparticles (NPs).
Ag-doped and Mn-doped ZnO samples were synthesized using a coprecipitation method and calcined at 600°C.
XRD, SEM, EDX, and UV-vis spectroscopy techniques were employed for characterization of the synthesized samples.
The photocatalytic activities of the samples were evaluated by measuring the photocatalytic decolorization of methyl violet with sunlight being the source of energy.
XRD patterns of the samples confirmed the wurtzite structure without change which was indicative of the absence of Mn- and Ag-related secondary phases for the doped ZnO.
The UV-vis spectra indicated the band gap energy of ZnO, Ag-doped ZnO, and Mn-doped ZnO to be 2.98, 2.80, and 2.64 eV, respectively.
Photocatalytic decolorization of methyl violet for the synthesized samples was found to be favorable at a pH of 9.0, catalyst dose of 1 g/L, and initial dye concentration of 4.5 × 10−4 g/L.
Mn-doped ZnO and Ag-doped ZnO photocatalytic decolorization efficiency was significantly higher than undoped ZnO.
Incorporation of Mn and Ag enhanced the visible-light photocatalytic activity of ZnO; this could be due to the ability of these metals to increase the surface defects of ZnO which in turn shift their optical absorption towards the visible region.
American Psychological Association (APA)
Ashebir, Mengstu Etay& Tesfamariam, Gebrekidan Mebrahtu& Nigussie, Gebretinsae Yeabyo& Gebreab, Tesfakiros Woldu. 2018. Structural, Optical, and Photocatalytic Activities of Ag-Doped and Mn-Doped ZnO Nanoparticles. Journal of Nanomaterials،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1195094
Modern Language Association (MLA)
Ashebir, Mengstu Etay…[et al.]. Structural, Optical, and Photocatalytic Activities of Ag-Doped and Mn-Doped ZnO Nanoparticles. Journal of Nanomaterials No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1195094
American Medical Association (AMA)
Ashebir, Mengstu Etay& Tesfamariam, Gebrekidan Mebrahtu& Nigussie, Gebretinsae Yeabyo& Gebreab, Tesfakiros Woldu. Structural, Optical, and Photocatalytic Activities of Ag-Doped and Mn-Doped ZnO Nanoparticles. Journal of Nanomaterials. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1195094
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1195094