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Enhanced Luminescence and Photocatalytic Activity of the Monovalent Sodium (Na+) co-doped MgAl2O4:Eu3+ Nanostructures

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Title Enhanced Luminescence and Photocatalytic Activity of the Monovalent Sodium (Na+) co-doped MgAl2O4:Eu3+ Nanostructures
 
Creator Faizan, Mohd
Siddique, M Naseem
Kumar, Sachin
 
Subject Luminescence
Photocatalytic activity
Diffuse reflectance spectroscopy
XPS
 
Description 9-18
In the present work, monovalent sodium (Na+) co-doped MgAl2O4:Eu3+ photocatalyst was prepared bya combustionmethod followed by annealing at 1000 ℃. The doping of trivalent Eu3+ ions into a host MgAl2O4 with divalent cations leadsto luminescence quenching and hence needs charge compensation to control the quenching, which was systematically studied by powder X-ray diffraction (PXRD), diffuse reflectance spectroscopy (DRS), photoluminescence (PL) and X-ray photoelectron spectroscopy (XPS) etc. The PL spectra of doped and co-doped samples exhibit sharp peaks around 580, 592, 611, 628 and 692 nm associated to the 5D0 → 7Fj (j = 1–4) transitions of the Eu3+ ions, respectively. The interplay of Na+ andEu3+ ions in the host MgAl2O4 lattice appears to be an effective charge compensation mechanism that achieve better crystalquality and enhanced red luminescence of such co-doped particles. In addition, we studied the photocatalytic activity of all the prepared photocatalysts. Specifically, Na+ co-doped MgAl2O4: Eu3+ photocatalyst revealed the enhanced photocatalyticactivity with photodegradation efficiency 82% under visible light irradiation.
 
Date 2023-12-27T06:06:03Z
2023-12-27T06:06:03Z
2023-12
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/63101
https://doi.org/10.56042/ijpap.v62i1.5932
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.62(01) (January 2024]