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Enhanced photocatalytic activity of SnO2 NPs by chromium (Cr) concentration

机译:通过铬(Cr)浓度增强SnO2 NP的光催化活性

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This study reports the synthesis of un- and chromium (Cr)-doped tin dioxide (SnO2) 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 SnO2 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 SnO2 NPs. Finally, the findings of the photocatalytic experiments performed for 120 min in ultraviolet irradiation under ambient conditions revealed an improvement in the degradation efficiency of the SnO2 NPs by Cr doping.
机译:该研究通过化学沉淀及其应用,通过化学沉淀和亚甲基蓝染料光降解的应用,报道了非和铬(Cr) - 二氧化锡(SnO2)纳米颗粒(NPS)的合成。 通过X射线衍射(XRD)分析,透射电子显微镜(TEM),傅里叶变换红外(FT-IR)光谱,元素映射和紫外 - 可见(UV-VIS)光谱,所获得的NPS。 TEM和XRD结果表明,SnO2 NPS是球形的并且含有多晶四方晶体。 UV-Vis光谱表明,增加Cr掺杂剂的浓度增强了SnO2 NP的光吸收电位。 最后,在环境条件下在紫外线照射中进行120分钟进行的光催化实验的发现表明CR掺杂的SnO2 NP的降解效率提高。

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