Synthesize of Nano-Tungstate Calcium and Study of Fluorescence

This topic focuses on nano-CaWO₄ by hydro-thermal synthesis through taking the citric acid as capping agent.The TEM and XRD results indicate the most superior conditions to attain the product is: pH is 7,the amount of surfactant used is 1∶4,the final appearance of product is rod,which is remarkably influenced by the amount of surfactant used.When the certain amuont of rare earth ion adding to the sample,it will not change the structure and the appearance of nano-CaWO4,when the amount of Ce³⁺ is 2% and Eu³⁺ is 4%,it will improve the fluorescence performance.

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