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Paper Information

Journal:   JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)   WINTER 2010 , Volume 3 , Number 12; Page(s) 5 To 9.
 
Paper: 

PREPARATION, PHOTOLUMINESCENCE AND PHOTOCATALYTIC ACTIVITY OF MICRO AND NANOSIZED FLOWER-LIKE ZNO

 
 
Author(s):  MOVAHEDI MARYAM, MAHJOUB ALI REZA*
 
* DEPARTMENT OF CHEMISTRY, TARBIAT MODARES UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

In this paper, micro and nanosized flower-like ZnO were successfully prepared by a microwave route without assistance of surfactant and template, employing zinc acetate and sodium hydroxide or ammonia as the starting materials. Nanosized flower-like was obtained when ammonium hydroxide solution was used.
X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) spectra were employed to characterization of the as synthesized ZnO. The photocatalytic activity of micro and nanosized flower-like ZnO was compared by photocatalytic decolorization of Congo red azo dye. Results show that the photocatalytic efficiency of micro sized flower-like ZnO to be remarkably greater than that nanosized flowerlike ZnO.

 
Keyword(s): LUMINESCENCE, PHOTOCATALYST, MICROWAVE, ZNO
 
References: 
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