کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
237536 | 465712 | 2011 | 6 صفحه PDF | دانلود رایگان |

TiO2 nanotubes doped with Eu3+ ions have been fabricated by a simple hydrothermal process. The formation mechanism of TiO2:Eu3+ nanotubes is proposed in detail. The nanotubes are evolved from the rolling up of the anatase sheets, which was verified by characterizations using the X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscope (SEM). Compared with the TiO2:Eu3+ nanocrystals, TiO2:Eu3+ nanotubes exhibit considerably stronger photoluminescence (PL) under the excitation of 393 nm. Furthermore, the PL intensity increases with the increasing of Eu3+ concentration in TiO2 nanotubes, and concentration quenching occurs when Eu3+ concentration exceeds 2.0 mol%. In addition, the luminescent lifetime of the TiO2:Eu3+ nanotubes is also examined. It is expected that the TiO2:Eu3+ nanotubes can be used as novel semiconductor luminescence materials.
TiO2 nanotubes doped with Eu3+ have been fabricated by a simple hydrothermal process. The mechanism of the formation process of Eu3+-doped TiO2 nanotubes was proposed in detail.Figure optionsDownload as PowerPoint slideHighlights
► TiO2:Eu3+ nanotubes have been fabricated by hydrothermal process.
► The nanotubes are composed of sheets containing a few layers.
► The best doping concentration is 2 mol%.
► The PL intensity is higher than Eu3+-doped TiO2 nanoparticles.
Journal: Powder Technology - Volume 212, Issue 2, 10 October 2011, Pages 372–377