Surface modification using silver nanoparticles for Y4Al2O9:Nd – Synthesis and their selected studies

A modified sol-gel synthesis was used to produce powders of yttrium aluminum monoclinic Y4Al2O9 (YAM) doped with 1 at% of Nd3+ ions. This was followed by surface modification using dispersed Ag metallic nanoparticles (AgNPs) in a concentration of n = 1, 2 and 3 wt%. The structure of the prepared com...

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Bibliographic Details
Published in:Journal of molecular structure 2020-02, Vol.1202, p.127363, Article 127363
Main Authors: Lemański, K., Michalska, M., Ptak, M., Małecka, M., Szysiak, A.
Format: Article
Language:English
Subjects:
Modified sol-gel method
Silver nanoparticles
Y4Al2O9
Yttrium aluminum monoclinic (YAM)
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Summary:A modified sol-gel synthesis was used to produce powders of yttrium aluminum monoclinic Y4Al2O9 (YAM) doped with 1 at% of Nd3+ ions. This was followed by surface modification using dispersed Ag metallic nanoparticles (AgNPs) in a concentration of n = 1, 2 and 3 wt%. The structure of the prepared composites was characterized using X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), absorption, Raman and emission measurements. To the best of our knowledge, we present for the first time far IR spectrum of the family of RE4Al2O9 (RE: rare earth ions) compounds. The measurements confirm the purity of the obtained polycrystals. •The surface of YAM:Nd3+ was modified with 1 ÷ 3 wt% dispersed Ag metallic nanoparticles.•No significant change of crystallite size with the change of Ag content was observed.•The measurements confirm the purity of the obtained polycrystals.•We present for the first time far IR spectrum of the RE4Al2O9 compounds.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2019.127363