کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1796763 | 1524484 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A simple method to synthesize single-crystalline β-wollastonite nanowires A simple method to synthesize single-crystalline β-wollastonite nanowires](/preview/png/1796763.png)
The single-crystalline β-wollastonite (β-CaSiO3) nanowires were prepared via a simple hydrothermal method, in the absence of any template or surfactant using cheap and simple inorganic salts as raw materials. Xonotlite [Ca6(Si6O17)(OH)2] nanowires were first obtained after hydrothermal treatment at a lower temperature of 200 °C for 24 h, and after being calcinated at 800 °C for 2 h, xonotlite nanowires completely transformed into β-wollastonite nanowires and the wire-like structure was preserved. The synthesized β-wollastonite nanowires had a diameter of 10–30 nm, and a length up to tens of micrometers, and the single-crystalline monoclinic parawollastonite structured β-wollastonite was identified by XRD with the space group of P21/a and cell constants of a=15.42 Å, b=7.325 Å, c=7.069 Å and β=95.38°. A possible growth mechanism of β-wollastonite nanowires was also proposed. The advantages of this method for the nanowire synthesis lie in the high yield, low temperature and mild reaction conditions, which will allow large-scale production at low cost.
Journal: Journal of Crystal Growth - Volume 300, Issue 2, 15 March 2007, Pages 267–271