Preparation of YVO₄:RE (RE=Yb³⁺/Er³⁺, Yb³⁺/Tm³⁺) nanoparticles via microemulsion-mediated hydrothermal method

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• 作者：Jun ZHANG ; Wulantuya ; Xiao-wei DI ; Zhi-liang LIU ; Gang XU ; Sheng-ming XU
• 关键词：yttrium orthovanadate ; doping ; up-conversion luminescence ; microemulsion ; hydrothermal method
• 刊名：Transactions of Nonferrous Metals Society of China
• 出版年：2010
• 出版时间：May 2010
• 年：2010
• 卷：20
• 期：Supplement 1
• 页码：s231-s235
• 全文大小：891 K

文摘

A microemulsion-mediated hydrothermal method for synthesis of YVO₄:RE (RE=Yb³⁺/Er³⁺, Yb³⁺/Tm³⁺) nanoparticles by hydrothermal treatment of quaternary microemulsion medium consisting of Na₃VO₄/NaOH and RE(NO₃)₃ aqueous solution, surfactant cetyltrimethylammonium bromide (CTAB), cosurfactant n-hexanol and oil phase n-heptane was report. The confinement of microemulsion droplets acting as microreactors during the reaction process allows the formation of small size YVO₄:RE nanoparticles with relatively narrow size distribution and less aggregation. The structure, size and shape of YVO₄:RE nanoparticles were investigated by means of X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Compared with the conventional solid annealing diffusion method, the microemulsion-mediated hydrothermal method shows superiority in obtaining YVO₄:RE nanoparticles with controllable size, narrow size distribution and less aggregation. The microemulsion-mediated hydrothermal method may be potentially applicable for synthesis of other rare earth doped up-converting luminescence nanomaterials.