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Controlling the Size of BaF 2 Nanocubes from 1000 to 10 nm
Author(s) -
Gao Peng,
Xie Yi,
Li Zhen
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600237
Subject(s) - chemistry , crystallite , photoluminescence , nanotechnology , selenium , ion , oxygen , chemical engineering , grain size , crystallography , metallurgy , optoelectronics , organic chemistry , materials science , engineering
Size control of BaF 2 nanocubes has been achieved by varying reaction time and pH value, thus producing nanocubes with a controllable edge length in the range 10–1000 nm. A linear relationship between cube size and reaction time has been revealed. Furthermore, a process has been developed to separate the growing BaF 2 nanocubes from the remaining solid products at different stages of the synthesis. On the basis of the observed crystallite morphologies, we have elucidated an “extension growing” mechanism to describe the size‐controlled growth of BaF 2 nanocubes using this method. Photoluminescence results demonstrate that the deoxidant selenite ions prevent the incorporation of oxygen into the BaF 2 nanocubes effectually, which will greatly affect their performance as scintillators. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)