【摘要】：稀土發(fā)光材料由于其優(yōu)良的光學(xué)性質(zhì),已成為國內(nèi)外研究的熱點。本論文分別通過消耗模板法與聚合物模板法制備稀土微納米熒光材料,分別對產(chǎn)品形貌、熒光性能和進(jìn)行了系統(tǒng)的研究,得到了預(yù)期的實驗結(jié)果,主要研究結(jié)果如下:成功的使用具有一定晶體形態(tài)微球模板通過水熱反應(yīng),制備出粒徑約為1μm的單分散近球體YBO_3:Ln~(3+)(Ln=Eu,Tb)熒光材料。通過XRD、TEM、PL等進(jìn)行了表征。通過對所制備的熒光粉進(jìn)行發(fā)光及壽命分析,結(jié)果表明近球體YBO_3:5%Eu~(3+)熒光粉具有優(yōu)良的紅橙比,是優(yōu)良的紅色熒光粉材料;近球體YBO_3:5%Tb3+熒光粉顯示出良好的綠色光發(fā)射性能。采用弱交聯(lián)的聚合物MF作為模板,然后使用尿素沉淀法制備出和殼結(jié)構(gòu)的前驅(qū)體,然后通過水熱途徑使堿式碳酸釔與磷酸二氫銨反應(yīng)生成YPO_4:Eu~(3+),而聚合物模板MF被反應(yīng)過程中產(chǎn)生的銨根離子作用,生成可溶于水的小分子,從而在水熱的過程中將模板除去成功制得中空的YPO_4:Eu~(3+)微球。從SEM與TEM照片中可以看出所制備的產(chǎn)品形貌均一,分散性良好,可以明顯觀察到中空結(jié)構(gòu);經(jīng)過熒光分析可以得知,所制備的產(chǎn)品具有良好的熒光發(fā)射性能,且色純度高,顯色性好,性能穩(wěn)定。以帶正電荷的三聚氰胺甲醛樹脂(MF)為模板,經(jīng)過St?ber法進(jìn)行SiO_2包覆后,將稀土前驅(qū)體沉積在復(fù)合微球表面,經(jīng)過高溫煅燒,形成SiO_2@Y_2O_3:Eu~(3+)中空復(fù)合微球。制備過程操作簡單,所得產(chǎn)品形貌完整,粒徑均一。通過XRD,SEM,TEM及BET對所得產(chǎn)物進(jìn)行表征分析,證實SiO_2@Y_2O_3:Eu~(3+)中空復(fù)合微球具有預(yù)期的形貌和結(jié)構(gòu),其比表面積約為202.8m2/g。經(jīng)過SiO_2@Y_2O_3-IBU對模型藥物IBU的在PBS緩沖溶液中的釋放測試,產(chǎn)物具有一定的藥物緩釋性能。
[Abstract]:The rare-earth luminescent material has become a hot spot at home and abroad due to its excellent optical properties. In this paper, rare-earth micro-nano-fluorescent materials were prepared by the method of consuming template and the polymer template method, respectively. The product morphology, the fluorescence property and the research of the system were studied, and the expected experimental results were obtained. The main results are as follows: A single-dispersed near-sphere YBO _ 3: Ln ~ (3 +) (Ln = Eu, Tb) fluorescent material with a particle size of about 1. m It was characterized by XRD, TEM, PL and so on. The results show that the near-sphere YBO _ 3:5% Eu ~ (3 +) phosphor has excellent red-orange ratio, and it is a good red phosphor material. The near-sphere YBO _ 3:5% Tb3 + fluorescent powder shows good green light emission performance. a weakly cross-linked polymer MF is used as a template, a precursor of the shell structure is prepared by using a urea precipitation method, And a small molecule soluble in water is generated, so that a hollow YPO _ 4: Eu ~ (3 +) microsphere is prepared successfully during the hydrothermal process. From the SEM and TEM photographs, the prepared product has the advantages of uniform morphology and good dispersibility, and can obviously observe the hollow structure; and after the fluorescence analysis, the prepared product has good fluorescence emission performance, high color purity, good color rendering property and stable performance. The rare-earth precursor was deposited on the surface of the composite microspheres after the coating of SiO _ 2 by the St? ber method, and the SiO_2@Y_2O_3: Eu ~ (3 +) hollow composite microspheres were formed after the coating of SiO _ 2 by the St? ber method. The preparation process has the advantages of simple operation, complete appearance of the obtained product and uniform particle size. The results were characterized by XRD, SEM, TEM and BET. It was confirmed that the SiO_2@Y_2O_3: Eu ~ (3 +) hollow composite microspheres had the expected morphology and structure, and the specific surface area was about 202.8 m2/ g. The release test of the SiO_2@Y_2O_3-IBU model drug IBU in the PBS buffer solution is tested, and the product has certain drug sustained-release performance.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TQ422

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