Photocatalytic activity of nanocrystalline ZnO, α-Fe2O3 and ZnFe2O4/ZnO

被引：0
|
作者：
M. N. Zulfiqar Ahmed
K. B. Chandrasekhar
A. A. Jahagirdar
H. Nagabhushana
B. M. Nagabhushana
机构：
[1] HKBK College of Engineering,Department of Chemistry
[2] Jawaharlal Technological University Anantapur,Department of Chemistry
[3] Dr. Ambedkar Institute of Technology,Department of Chemistry
[4] Tumkur University,Department of Postgraduate Studies and Research in Physics
[5] M S Ramaiah Institute of Technology,Department of Chemistry
来源：
Applied Nanoscience | 2015年 / 5卷
关键词：
Solution combustion; ZnFe; O; /ZnO; Brilliant yellow; Photocatalytic activity; Spinel structure; SEM;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Nanocrystalline powders of ZnO, α-Fe2O3 and ZnFe2O4/ZnO were prepared by solution combustion method. The characterization of the nano powders was done by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The ZnO and α-Fe2O3 nanopowders exhibited the wurtzite and hexagonal phases, respectively. The PXRD pattern of ZnFe2O4/ZnO indicated the spinel phase of zinc ferrite and wurtzite phase of zinc oxide. The three nanopowders were used as photocatalysts for the removal of the azodye brilliant yellow (BY) from its aqueous solution. A comparison of the results indicated that ZnFe2O4/ZnO showed better photocatalytic activity for the removal of BY than ZnO and α-Fe2O3. This was attributed to the synergistic effect between ZnFe2O4 and ZnO resulting in better charge separation and reducing the electron–hole recombination. The photocatalytic activity followed the order: ZnO < α-Fe2O3 < ZnFe2O4/ZnO.
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页码：961 / 968
页数：7
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