Journal
JOURNAL OF CRYSTAL GROWTH
Volume 306, Issue 1, Pages 129-134Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2007.04.050
Keywords
crystal morphology; hydrothermal crystal growth; nanomaterials; phosphates; phosphors
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Strontium phosphate chloride nanowire was synthesized via a solvothermal treatment of strontium tri-polyphosphate and Collin salt in 1,4-dioxane at 150 degrees C. The effects of 1,4-dioxane concentration on particle morphology, crystallinity and phase purity were investigated in this study. The specimen morphology was analyzed by transmission electron microscopy (TEM) and scanning electron rnicroscopy (SEM). When the concentration of 1,4-dioxane was below 10%, micron-sized whisker was the dominant form. At 20-25% concentration of 1,4-dioxane, strontium phosphate chloride single-crystalline nanowire was 31 +/- 12 nm in diameter and 1.43 +/- 0.6 mu m in length with an aspect ratio of 52.28 +/- 29.41. X-ray diffraction (XRD) pattern of this nanowire matched with that of strontium phosphate chloride (JCPDS #083-0973). When 1,4-dioxane concentration exceeded 25%, nanorod aggregate was the dominant form instead of nanowire. At 20-25% 1,4-dioxane concentration suitable strontium concentration combine with high chemical potential environment favors the formation of nanowires. By adding 1,4-dioxane impure phase such as beta-strontium hydrogen phosphate, nanorod formation was suppressed. This method provides an efficient way to synthesize high aspect ratio strontium phosphate chloride nanowire. It has potential bioactive nanocomposite, high mechanical performance bioactive bone cement filter and fluorescent material applications. (c) 2007 Elsevier B.V. All rights reserved.
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