中文摘要：

用水热法合成了花状Bi2WO6和Bi2WO6∶Er^3＋球型微粒样品。Bi2WO6∶Er^3＋微粒在980 nm光激发下发射纯绿色上转换荧光,退火温度和Er^3＋的掺杂量对Er3＋的光谱形状没有明显的影响。Bi2WO6∶Er^3＋除了具有上述发光性质外,在可见光照射下还存在很高的光催化活性。实验证明：Bi2WO6和Bi2WO6∶Er^3＋对罗丹明B的光降解效率分别达到68.9%和95.3%,Er^3＋离子的掺杂提高了罗丹明B的吸附量以及Bi2WO6∶Er^3＋光催化活性。

英文摘要：

Flower-like hierarchical Bi2WO6 and Bi2WO6∶Er3＋ microspheres were synthesized by a hydrothermal method.Bi2WO6∶Er3＋ microspheres exhibited pure green upconversion lumminescence（2H11/2/4S3/2→4I15/2） under 980 nm excitation.The annealing temperature as well as Er3＋-doped content had not evident influence on the spectrum shape of Er3＋.Bi2WO6∶Er3＋,in addition to the aforementioned luminescence properties,also showed high photocatalytic activity for the degradation of RhB under visible light irradiation.The photodegradation efficiency of RhB reached 68.9% and 95.3% for Bi2WO6 and Bi2WO6∶Er3＋,respectively.The enhancement of photocatalytic activity would be related to the both the larger RhB adsorbance and the visible-to-ultraviolet upconversion of Er3＋ ions.