The Effects of Non-thermal Plasma on the Morphology of Ce-doped ZnO: Synthesis, Characterization and Photocatalytic Activity of Hierarchical Nanostructures

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• 作者：Hadi Fallah Moafi ; Mitra Hafezi ; Sirous Khorram…
• 关键词：Ce ; doped ZnO ; Non ; thermal plasma ; Morphology ; Photocatalysis ; Methylene blue
• 刊名：Plasma Chemistry and Plasma Processing
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：37
• 期：1
• 页码：159-176
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Inorganic Chemistry; Classical Mechanics; Characterization and Evaluation of Materials; Mechanical Engineering;
• 出版者：Springer US
• ISSN：1572-8986
• 卷排序：37

文摘

ZnO nanoparticles with and without 8 mol % Ce dopant were synthesized by precipitation method and the prepared samples were treated with various types of non-thermal plasma in order to study their effects on the morphology and photocatalytic activity of the samples. As-prepared Ce-doped ZnO has a hexagonal wurtzite structure and the crystal system was not changed by the plasma treatment. The morphology of Ce-doped ZnO was changed from spherical particle to flower and rod-like shapes by the plasma treatment. The particle size of the treated Ce-doped ZnO is smaller in comparison with that of untreated sample. The photodegradation of methylene blue by the plasma-treated Ce-doped ZnO in aqueous solution is higher than that of the untreated Ce-doped ZnO. The enhancement of the photocatalytic activity by the plasma-treated samples may come from the particle size reduction, enhancement in charge separation efficiency and increase of the surface area.