کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1329309 | 978904 | 2009 | 6 صفحه PDF | دانلود رایگان |

Syntheses of titania-based nanomaterials by simple sol–gel route using a mixture of CTAB and salicylate as well as salicylate ions as templates have been reported. The materials are characterized by the powder X-ray diffraction (XRD), thermal analysis, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and spectroscopic (FT IR, UV–VIS) analyses. A disordered mesoscale orientation of nanoparticles (ca. 2–4 nm) composed of TiO2-salicylate surface complex has been obtained when 1:1 mixing ratio of CTAB and salicylate at the CTAB concentration of 0.001 M was employed as a template. All these nanocomposites exhibit a considerable red shift at the onsets of their absorption band compared to pure (organic-free) nanocrystalline TiO2 and show blue luminescence at room temperature. This assembly of nanoparticles is highly interesting in the context of visible light sensitization and nanodevice fabrication.
A new titania–salicylate nanostructure material has been synthesized, which exhibit a considerable red shift towards the visible region vis-à-vis nanocrystalline (organic-free) TiO2 and blue luminescence at room temperature.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 182, Issue 5, May 2009, Pages 1200–1205