Khan, Sovann Choi, Yunseok Ahn, Hak-Young Han, Jae Hyun Ju, Byeong-Kwon Chung, Jaewon Cho, So-Hye 2024-01-19T17:04:20Z 2024-01-19T17:04:20Z 2021-09-05 2020-07 1996-1944 https://pubs.kist.re.kr/handle/201004/118450 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:Tb(3+)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:Tb(3+)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. English MDPI Y2O3-EU PHOSPHOR PARTICLES SILICA PARTICLES NANOPHOSPHORS GREEN PHOTOLUMINESCENCE LUMINESCENCE NANOPARTICLES Y2O3TB3+ BLUE LI+ Control of Particle Size in Flame Spray Pyrolysis of Tb-doped Y(2)O(3)for Bio-Imaging Article 10.3390/ma13132987 1 MATERIALS, v.13, no.13 MATERIALS 13 13 scie scopus 000552318500001 2-s2.0-85087996511 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter Chemistry Materials Science Metallurgy & Metallurgical Engineering Physics Article Y2O3-EU PHOSPHOR PARTICLES SILICA PARTICLES NANOPHOSPHORS GREEN PHOTOLUMINESCENCE LUMINESCENCE NANOPARTICLES Y2O3TB3+ BLUE LI+ Tb-doped Y2O3 flame spray pyrolysis nanophosphor bio-image salt-assisted FSP luminescence