Controlling the Size of BaF₂ Nanocubes from 1000 to 10 nm

Abstract

Size control of BaF2 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 BaF2 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 BaF2 nanocubes using this method. Photoluminescence results demonstrate that the deoxidant selenite ions prevent the incorporation of oxygen into the BaF2 nanocubes effectually, which will greatly affect their performance as scintillators. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)

Nucleation and Growth of BaFxCl2−x Nanorods

“…[33] Several BaF 2 nanocrystals have already been reported by Burlitch et al, [34] Hu et al, [35] Shi et al, [36,37] Xie et al, [38] and Qin et al [39] All of these nanocrystals are cubic BaF 2 and have nanocube and nanorod shapes. Thus, there is also a great need to synthesize orthorhombic BaF 2 .…”

Facile and Controllable Synthesis of Monodisperse CaF2 and CaF2:Ce3+/Tb3+ Hollow Spheres as Efficient Luminescent Materials and Smart Drug Carriers

“…[25][26][27] These properties lead to a wide range of potential optical applications in optics, biological labels, and lenses, [28,29] as well as components of insula- samples still show green luminescence of Tb 3 + under UV irradiation, and the emission intensity of Tb 3 + in the drugcarrier system varies with the released amount of ibuprofen, so that drug release can be easily tracked and monitored by means of the change in luminescence intensity. The formation mechanism and luminescent and drugrelease properties were studied in detail.…”

Preparation of Potassium Niobate Nanocrystals by Wet Chemical Reaction at Low Temperature

“…In recent research on nanocube preparation, substances of metals [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Also, there have been reports on binary oxides and compounds [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. On the other hand, nanocube synthesis of ternary oxides, its compounds, or the other compound is extremely difficult.…”