Control of particle size in flame spray pyrolysis of Tb-doped Y2O3 for bio-imaging

Sovann Khan, Yunseok Choi, Hak Young Ahn, Jae Hyun Han, Byeong Kwon Ju, Jaewon Chung, So Hye Cho

研究成果: ジャーナルへの寄稿学術誌査読

2 被引用数 (Scopus)

抄録

Recently, the use of oxide-based nanomaterials for bio-imaging has received great attention owing to their remarkable stabilities as compared to those of conventional organic dyes. Therefore, the development of scalable methods for highly luminescent oxide materials with fine control of size has become crucial. In this study, we suggested modified flame spray pyrolysis (FSP) as a scalable method to produce a green-light emitting phosphor-Tb-doped Y2O3-in the nanometer size range. In our FSP method, an alkali salt (NaNO3) was found to be highly effective as a size-controlling agent when it is simply mixed with other metal nitrate precursors. The FSP of the mixture solution resulted in oxide composites of Y2O3:Tb3+ and NaxO. However, the sodium by-product was easily removed by washing with water. This salt-assisted FSP produced nano-sized and well-dispersed Y2O3:Tb3+ nanoparticles; their crystallinity and luminescence were higher than those of the bulk product made without the addition of the alkali salt. The nanoparticle surface was further coated with silica for biocompatibility and functionalized with amino groups for the attachment of biological molecules.

本文言語英語
論文番号2987
ページ(範囲)1-14
ページ数14
ジャーナルMaterials
13
13
DOI
出版ステータス出版済み - 7月 1 2020
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)

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