Synthesis and morphological control of rare earth oxide nanoparticles by solvothermal reaction

Autor:	Shu Yin, Ruixing Li, Shingo Akita, Tsugio Sato, Makoto Shinozaki
Rok vydání:	2007
Předmět:	Materials science Mechanical Engineering Inorganic chemistry Solvothermal synthesis Oxide Nanoparticle law.invention Amorphous solid Ammonia chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials law Hydroxide General Materials Science Calcination Ethylene glycol
Zdroj:	Journal of Materials Science. 43:2234-2239
ISSN:	1573-4803 0022-2461
Popis:	Eu doped Y2O3 and some kinds of other rare earth oxides nanoparticles such as Er2O3, Nd2O3, Ho2O3, Lu2O3, and Dy2O3 were prepared by a simple co-precipitation-solvothermal treatment-calcination process, where the co-precipitated amorphous hydroxide precursors obtained by adding rare earth nitrate solutions in ammonia solutions were heated in solvents such as water, alcohols and glycols, followed by calcination in air. The morphology of rare earth oxide particles strongly depended on the solvothermal reaction medium but not related to the kind of rare earth oxide. The powders prepared in water and ethanol possessed nanowire structure, where the aspect ratio of powder treated in water was higher than that in ethanol. The powders prepared by co-precipition-solvothermal treatment-calcination process using ethylene glycol consisted of near-spherical nanoparticles whereas that prepared by conventional co-precipitation-calcination method consisted of hardly agglomerated submicron particles. The nanoparticles of Eu3+ doped Y2O3 prepared by co-precipition-solvothermal treatment-calcination process showed similar intensity of photoluminescence with the submicron particles by co-precipition-calcination process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9a0a7b8fcb75381e4f53d03ec04e64d6 https://doi.org/10.1007/s10853-007-2070-3 Zobrazit plný text záznamu Full text from SpringerLink