【摘要】 通过模板法与溶胶-凝胶法相结合,在温和的条件下制备了介孔Y2O3。再采用水热反应法制得Eu3+、Gd3+单掺杂及Eu3+,Gd3+双掺杂的三种介孔Y2O3组装体(介孔Y2O3∶Eu3+,介孔Y2O3∶Gd3+,介孔Y2O3∶Eu3+,Gd3+)。利用广角和小角X射线衍射(XRD)、透射电子显微镜(TEM)对介孔Y2O3进行了表征,结果表明,所制备的介孔Y2O3为立方相,具有六方孔道结构,孔径约10nm。对介孔Y2O3和组装体系进行了荧光光谱(PL)分析,发现在550℃热扩散处理后,介孔Y2O3∶Eu3+的发光存在基质对Eu3+的能量传递,Y2O3∶Eu3+,Gd3+体系中Gd3+对Eu3+也有能量传递作用。更多还原

【Abstract】 Mesoporous Y2O3 material was prepared by the combination of the sol-gel process and template method under mild condition.Then,each of the rare earth ions Eu3+,Gd3+ doped and the both ions co-doped mesoporous Y2O3 were synthesized by hydrothermal method.The RE-doped mesoporous Y2O3 materials were analyzed by small-angle and wide-angle X-ray diffraction(XRD),and transmission election microscope(TEM).The results show that the as-prepared mesoporous Y2O3 material exhibits cubic structure with array of hexagonal pores in diameter of 10nm.The spectral behaviours of Y2O3,Y2O3∶Eu3+,Y2O3∶Gd3+,Y2O3∶Eu3+,Gd3+ were studied.The energy transfer from Gd3+ to Eu3+ in mesoporous Y2O3∶Eu3+,Gd3+ materials and the energy transfer from Y2O3 to Eu3+ in Y2O3∶Eu3+ materials were identified.更多还原