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通过简便的水热合成的方法,以稀土硝酸盐和三聚磷酸钠为原料,C ePO4∶Tb3+荧光纳米晶被成功制备。该纳米晶具有良好的稳定性和分散性。利用氧化还原反应诱导实现C e4+/C e3+之间的转换,能够有效地控制C ePO4∶Tb3+荧光纳米晶的荧光“开”或“关”。在此文中,F e3+作为氧化剂、抗坏血酸作为还原剂实现C e4+/C e3+之间的转换,以达到使C ePO4∶Tb3+的荧光完全猝灭以及还原的效果。
By simple hydrothermal synthesis method, rare earth nitrate and sodium tripolyphosphate as raw materials, CePO4:Tb3 + fluorescent nanocrystals were successfully prepared. The nanocrystal has good stability and dispersion. The conversion of C e4 + / C e3 + can be controlled by the redox reaction, which can effectively control the fluorescence “on” or “off” of the CePO4: Tb3 + fluorescent nanocrystals. In this paper, F e3 + as an oxidant, ascorbic acid as a reducing agent to achieve conversion between C e4 + / C e3 + in order to achieve the complete fluorescence of CePO4: Tb3 + and the reduction effect.