【摘要】：由于稀土離子獨特的電子層結(jié)構(gòu),使得稀土發(fā)光材料具有優(yōu)異的發(fā)光性能及廣闊的應(yīng)用前景。氟化物因其多樣性的結(jié)構(gòu)特點和特殊的物理化學(xué)特性,成為發(fā)光材料優(yōu)良的基質(zhì)。納米級稀土發(fā)光材料的性質(zhì)在很大程度上取決于其結(jié)構(gòu)、形貌以及尺寸,因而合成出形貌和尺寸可控的納米發(fā)光材料,成為科學(xué)工作者研究的熱點。由于氨基酸具有特殊的官能團(tuán)和自組裝功能,因而能夠用作模板來制備各種形態(tài)的納米材料。本文分別采用不同的氨基酸為表面活性劑,通過水熱法合成出了不同形貌的YF3：Eu3+、GdF3：Eu3+和LaF3：Eu3+納米發(fā)光材料,并對其結(jié)構(gòu)和性能進(jìn)行了表征。 以天冬堿,丙氨酸和谷氨酸為表面活性劑,采用水熱法分別合成了由納米束組成的梭形結(jié)構(gòu)的YF3：Eu3+納米材料,由橢圓形納米球組成的棒狀結(jié)構(gòu)的YF3：Eu3+納米材料,由顆粒狀納米晶組成的梭形結(jié)構(gòu)的YF3：Eu3+納米材料。 以天冬堿,丙氨酸和谷氨酸為表面活性劑,采用水熱法分別合成了由納米顆粒組成的中間帶孔的圓盤狀結(jié)構(gòu)的GdF3：Eu3+納米材料,由納米片組成的圓盤狀的GdF3：Eu3+納米材料,由小的納米顆粒組成的中間有孔的納米花狀結(jié)構(gòu)的GdF3：Eu3+納米材料。測試結(jié)果表明,不同結(jié)構(gòu)的氨基酸存在下所得的產(chǎn)物結(jié)構(gòu)相同,形貌不同,發(fā)光性能也存在一定的差別。
[Abstract]:Due to the unique electronic layer structure of rare earth ions, rare earth luminescent materials have excellent luminescent properties and broad application prospects. Fluoride is an excellent substrate for luminescent materials because of its diverse structure and special physical and chemical properties. The properties of nano-sized rare earth luminescent materials depend on their structure, morphology and size to a great extent. Therefore, the synthesis of nano-luminescent materials with controllable morphology and size has become the focus of scientific research. Amino acids have special functional groups and self-assembly functions, so they can be used as templates to prepare various forms of nano-materials. In this paper, YF3:Eu3, GdF3:Eu3 and LaF3:Eu3 nanoluminescent materials with different morphologies were synthesized by hydrothermal method using different amino acids as surfactants, and their structures and properties were characterized. Using asparagine, alanine and glutamic acid as surfactants, YF3:Eu3 nanomaterials with spindle-shaped structure and rod-like structure composed of oval nanospheres were synthesized by hydrothermal method, respectively, and the YF3:Eu3 nanomaterials with rod-like structure were prepared by hydrothermal method. Fusiform YF3:Eu3 nanomaterials composed of granular nanocrystals. Using asparagine, alanine and glutamic acid as surfactants, the disk-like GdF3:Eu3 nanomaterials composed of nano-particles were synthesized by hydrothermal method, and the disk-like GdF3:Eu3 nanomaterials composed of nano-particles were prepared. A GdF3:Eu3 nano-material consisting of small nano-particles with pore-like nano-flowers in the middle. The results show that in the presence of different amino acids, the structure of the product is the same, the morphology of the product is different, and the luminescent properties are also different.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TB383.1

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 單楠楠;生物分子輔助水熱\溶劑熱技術(shù)制備納米硫化物半導(dǎo)體[D];遼寧師范大學(xué);2012年

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本文編號：2459505