کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
30794 44503 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photocatalytic degradation of toluene using sprayed N-doped ZnO thin films in aqueous suspension
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Photocatalytic degradation of toluene using sprayed N-doped ZnO thin films in aqueous suspension
چکیده انگلیسی

Thin films of N-doped ZnO are synthesized via spray pyrolysis technique in aqueous medium using zinc acetate and ammonium acetate as precursors. Influence of N doping onto photochemical, structural, morphological, optical and thermal properties have been investigated. Structural analysis depicts hexagonal (wurtzite) crystal structure. The effect of N doping on the photocatalytic activity of N-doped ZnO in the degradation of toluene is studied and results are compared with pure ZnO. The results show that the rate of degradation of toluene over N-doped ZnO is higher as compared to that of pure ZnO and increases with increasing N doping up to 10 at.% and then decreases. The enhancement of photocatalytic activity of N-doped ZnO thin films is mainly due to their capability for reducing the electron hole pair recombination. The photocatalytic mineralization of toluene in aqueous solution has been studied by measuring COD and TOC. Possible reaction mechanism pathways during toluene degradation over N-doped ZnO has been proposed.


► Influence of N doping onto the physicochemical properties.
► Photocatalytic activity of NZO thin films.
► The correlation TOC and COD measurements for extent of mineralization.
► Reaction mechanism during degradation of toluene.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 113, 1 August 2012, Pages 70–77
نویسندگان
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