期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 243, 期 1-3, 页码 49-52出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2004.05.006
关键词
ceria; nanocrystals; hydrothermal synthesis; stabilization; photoluminscence
High quality monodisperse cerium(IV) oxide (CeO2) particles with a particle size less than 2 nm can be synthesized easily in large scale by a hydrothermal hydrolysis reaction at 120 degreesC using (NH4)(2)Ce(NO3)(6) as precursor in the presence of a double hydrophilic block copolymer. The nanoparticles show a strong blue emission with an intense peak at 425 nm. With dilution of the solution, an obvious violet emission was observed at room temperature with concentration-dependent blue-shift characteristics. (C) 2004 Elsevier B.V. All rights reserved.
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