中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 Special 1 May 2010 |
（1. College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China;
2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China）
Abstract: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.
Key words: yttrium orthovanadate; doping; up-conversion luminescence; microemulsion; hydrothermal method
