Biopolymer-assisted synthesis of yttrium oxide nanoparticles--颗粒学报PARTICUOLOGY

Kaygusuz, H., Bilir, G., Tezcan, F., Erim, F. B., & Özen, G. (2014). Biopolymer-assisted synthesis of yttrium oxide nanoparticles. Particuology, 14, 19–23. https://doi.org/10.1016/j.partic.2013.02.006

Biopolymer-assisted synthesis of yttrium oxide nanoparticles

Hakan Kaygusuz ^a *, Gökhan Bilir ^b, Filiz Tezcan ^a, F. Bedia Erim ^a, Gönül Özen ^b

a Department of Chemistry, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
b Department of Physics, Istanbul Technical University, Maslak 34469, Istanbul, Turkey

10.1016/j.partic.2013.02.006

Volume 14, June 2014, Pages 19-23

Received 25 November 2012, Revised 26 January 2013, Accepted 7 February 2013, Available online 15 June 2013.

E-mail: kaygusuzh@itu.edu.tr

Highlights

• Yttrium oxide nanopowders were synthesized by thermal decomposition of yttrium alginate.

• Effects of annealing temperature and duration on nanoparticle size were investigated.

• At the same annealing condition, the proposed method yields smaller powders than combustion method.

Abstract

Yttrium oxide nanopowder was prepared by a novel technique using an alginate biopolymer as a precursor. The technique is based on thermal decomposition of an yttrium alginate gel, which is produced in the form of beads by ionic gelation between the yttrium solution and sodium alginate. The effect of post-annealing temperature on the particle size of the nanocrystals was investigated at various temperatures. The products were characterized using X-ray diffraction, scanning electron microscopy, and atomic force microscopy. The size of the nanocrystalline Y₂O₃ particles varied from 22.7 to 38.7 nm, depending on the annealing temperature and time. The grain size distribution (GSD) was also determined. The GSD became more non-symmetrical as the annealing temperature increased, and the width of the distributions for the powders produced using the alginate method was less affected by heat treatment. This alginate method was compared with the conventional glycine combustion method, on the basis of particle size. The particles obtained using the proposed technique were smaller than those obtained using the combustion method. Alginate-assisted thermal decomposition is therefore an easy and cost-effective method for preparing nanosized Y₂O₃ crystals.

Graphical abstract

Keywords

Y₂O₃; Nanoparticle; Thermal decomposition; Alginate; Grain size distribution

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