Enhanced photocatalytic activity of SnO$_2$ NPs by chromium (Cr) concentration

Bulletin of Materials Science

AZADEH HAGHIGHATZADEH^2¹  TAYEBEH KARIMI^1,2² 

[1] Department of Physics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran^2;Department of Physics, Khuzestan Science and Research Branch, Islamic Azad University, Ahvaz, Iran^1

关键词: SnO$_2$ NPs;    Cr concentration;    chemical precipitation;    optical properties;    methylene blue degradation.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

This study reports the synthesis of un- and chromium (Cr)-doped tin dioxide (SnO$_2$) nanoparticles (NPs) through chemical precipitation and their application for photodegradation of methylene blue dye. The obtained NPs were characterized by X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, elemental mapping and ultraviolet–visible (UV–Vis) spectroscopy. The TEM and XRD results demonstrated that the SnO$_2$ NPs are spherical and contain polycrystalline tetragonal crystals. UV–Vis spectra showed that increasing the concentration of the Cr dopant enhances the light absorption potential of the SnO$_2$ NPs. Finally, the findings of the photocatalytic experiments performed for 120 min in ultraviolet irradiation under ambient conditions revealed an improvement inthe degradation efficiency of the SnO$_2$ NPs by Cr doping.

【 授权许可】

CC BY