以黄磷炉渣为硅源,采用表面修饰法制备得到稀土配合物Eu(EDTA)-掺杂的SiO2荧光材料。通过X射线衍射(XRD)、扫描电子显微镜(SEM)和荧光光谱(PL)等表征方式对产物结构、形貌以及发光性进行了表征。结果表明:所合成的SiO2∶Eu3+荧光粉为无定型结构,可被近紫外光(395nm)有效激发,其发射主峰位于616nm处,归属于Eu3+的5D0→7F2电偶极跃迁。SiO2∶Eu3+样品形貌为块状颗粒,清晰可见有大量小颗粒聚集在大颗粒的表面。
Yellow phosphorus slag used as the silicon source,the earth complex Eu(EDTA)-doped SiO2 fluorescent materials were prepared by surface modification.The structure,morphology and luminescence of the product were characterized by X-ray diffraction (XRD),scanning electron microscope (SEM) and fluorescence spectroscopy (PL).The results shown that the synthesized SiO2∶ Eu3+ phosphor had an amorphous structure,and can be effectively excited by near ultraviolet light (395nm).Its main emission peak was at 616nm,which was belong to the 5D0→7F2 electric dipole transition of Eu3+.The morphology of the SiO2∶Eu3+ sample was massive particles.It can be clearly seen that a large number of small particles were gathered on the surface of the large particles.
[1] Ma T,Sun J,Li X,et al.Optimization of extraction for Anemarrhenaasphodeloides Bge.using silica gel-based vortex-homogenized matrix solid-phase dispersion and rapid identification of antioxidant substances[J].Journal of Separation Science,2020,43(11):2180-2192.
[2] 鲍田,王东.玻璃表面二氧化硅基超疏水膜的研究进展[J].表面技术,2019,48(8):156-164.
[3] 李岚,钱勇,杨东杰,等.纳米木质素/二氧化硅基微胶囊的制备及在自愈合涂层中的应用[J].高等学校化学学报,2019,40(6):1293-1300.
[4] Yang Y,Liu H,Zhang H,et al.Co-fluorescence effect of rare earth complexes with 4-aminobenzoic acid in silica matrix[J].Spectroscopy Letters,2018,51(1):1-6.
[5] Zuo Y,Tian M,Sun J,et al.Silica nanoparticles with up-conversion fluorescence based on Triplet-Triplet annihilation mechanism for specific recognition of apoptosis cells[J].Analytical Chemistry,2018,90(24):14602-14609.
[6] Eisner C,Ow H,Yang T,et al.Measurement of plasma volume using fluorescent silica-based nanoparticles[J].Journal of Applied Physiology,2012,112(4):681-687.
[7] 苏毅,李国斌,夏举佩,等.黄磷炉渣制取白炭黑和磷酸氢钙的工艺[J].环境工程,2008,26(5):98-100.
[8] 苏毅,罗冬梅,李国斌,等.黄磷炉渣浸出液制备硫酸钙结晶动力学[J].化学工程,2014,42(4):27-30.
[9] 乔冰,高晗,王亭杰,等.二氧化硅表面修饰硅烷偶联剂APTS的过程和机制[J].化工学报,2014,65(7):2629-2637.
[10] 孟晓燕,薛宇韬,余紫红,等.CaWO4∶Eu3+红色荧光粉的制备及其发光性能[J].化工新型材料,2019,47(12):79-81,86.
[11] 陆广农,唐宁.4个氮支套索冠醚的铕(Ⅲ)、铽(Ⅲ)配合物的合成及表征[J].兰州大学学报(自然科学版),2008,44(2):66-68.
