کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1504979 | 993749 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A facile synthesis of luminescent YVO4:Eu3+ hollow microspheres in virtue of template function of the SDS–PEG soft clusters A facile synthesis of luminescent YVO4:Eu3+ hollow microspheres in virtue of template function of the SDS–PEG soft clusters](/preview/png/1504979.png)
Hollow europium-doped yttrium orthovanadate (YVO4:Eu3+) microspheres were fabricated via a sodium dodecyl sulfate (SDS)–polyethylene glycol (PEG)-assisted hydrothermal technique. The as-synthesized hollow YVO4:Eu3+ microspheres were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectroscopy (PL). The obtained results showed that the morphology and size of the hollow microspheres have a strong dependence on the hydrothermal reaction time of the YVO4:Eu3+ powders. It is believed that the SDS–PEG clusters perform a function of dual soft-template that results in a unique template-induced secondary assembly in the one-pot synthesis of hollow YVO4:Eu3+ microspheres. The photoluminescence measurement revealed that the YVO4:Eu3+ powders with a spherical hollow shape have better red luminescence compared to the YVO4:Eu3+ solid microspheres. As a result, the controlled synthesis of hollow YVO4:Eu3+ microspheres not only has a great theoretical significance in studying the three-dimensional control and selective synthesis of inorganic materials but also benefits the potential applications based on hollow YVO4:Eu3+ microspheres owing to reducing the usage of expensive rare-earth elements.
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► Hollow YVO4:Eu3+ microspheres are synthesized by SDS–PEG-assisted hydrothermal method.
► The SDS–PEG clusters perform a function of dual soft-template.
► Morphology and size of hollow microspheres have a strong dependence on reaction time.
► Hollow and plain YVO4:Eu3+ microspheres show nearly equivalent emission intensity.
► The present synthesis method reduces the usage of expensive rare-earth elements.
Journal: Solid State Sciences - Volume 14, Issue 8, August 2012, Pages 1018–1022