کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
235515 465637 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of metal ion doping on the optical properties and the deactivation of photocatalytic activity of ZnO nanopowder for application in sunscreens
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of metal ion doping on the optical properties and the deactivation of photocatalytic activity of ZnO nanopowder for application in sunscreens
چکیده انگلیسی


• Preparation of metal ion (Al, Fe, Cu) doped ZnO by co-precipitation.
• Metal ion doping changes the cell volume and decreases the particle size of ZnO.
• Al doping does not modify the optical properties of ZnO.
• Fe and Cu doping increases the visible light absorption of ZnO.
• The photocatalytic activity is suppressed with metal ion doping.

The synthesis and characterization of ZnO nanoparticles doped with different metals (Al, Fe, Cu) were studied in order to reduce the photocatalytic activity of ZnO without modifying its optical properties for application in sunscreen. The metal doped ZnO materials were prepared by a simple co-precipitation method from corresponding metal precursors. The effect of metal ion doping on the crystal structure, morphology and optical properties of ZnO was respectively characterized by XRD, SEM and UV–visible diffuse reflectance. The photocatalytic activity was evaluated via the bleaching of methylene blue under UV irradiation. According to the results, the metal ion doping modified the cell volume, reduced the crystallinity and decreased the particle size of ZnO, which induces the increase of structural defects and then the suppression of its photocatalytic activity. The metal doped ZnO materials exhibited the UV absorption capacity comparable to the undoped ZnO. However, the optical properties in the visible region of ZnO were influenced by the nature of metal dopant. The Fe and Cu doping strongly enhanced the visible light absorption whereas the Al doped ZnO sample showed the visible light transparency, which make this material a promising constituent of sunscreen.

Suppression of ZnO photocatalysis without modifying UV absorption by metal doping.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 288, January 2016, Pages 366–370
نویسندگان
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