氨基酸辅助水热法制备稀土氟化物纳米发光材料
发布时间：2019-04-17 13:45
【摘要】：由于稀土离子独特的电子层结构,使得稀土发光材料具有优异的发光性能及广阔的应用前景。氟化物因其多样性的结构特点和特殊的物理化学特性,成为发光材料优良的基质。纳米级稀土发光材料的性质在很大程度上取决于其结构、形貌以及尺寸,因而合成出形貌和尺寸可控的纳米发光材料,成为科学工作者研究的热点。由于氨基酸具有特殊的官能团和自组装功能,因而能够用作模板来制备各种形态的纳米材料。本文分别采用不同的氨基酸为表面活性剂,通过水热法合成出了不同形貌的YF3：Eu3+、GdF3：Eu3+和LaF3：Eu3+纳米发光材料,并对其结构和性能进行了表征。 以天冬碱,丙氨酸和谷氨酸为表面活性剂,采用水热法分别合成了由纳米束组成的梭形结构的YF3：Eu3+纳米材料,由椭圆形纳米球组成的棒状结构的YF3：Eu3+纳米材料,由颗粒状纳米晶组成的梭形结构的YF3：Eu3+纳米材料。 以天冬碱,丙氨酸和谷氨酸为表面活性剂,采用水热法分别合成了由纳米颗粒组成的中间带孔的圆盘状结构的GdF3：Eu3+纳米材料,由纳米片组成的圆盘状的GdF3：Eu3+纳米材料,由小的纳米颗粒组成的中间有孔的纳米花状结构的GdF3：Eu3+纳米材料。测试结果表明,不同结构的氨基酸存在下所得的产物结构相同,形貌不同,发光性能也存在一定的差别。
[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.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TB383.1
本文编号：2459505
[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.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TB383.1
【引证文献】
相关硕士学位论文 前1条
1 单楠楠;生物分子辅助水热\溶剂热技术制备纳米硫化物半导体[D];辽宁师范大学;2012年
，本文编号：2459505
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