纯相CaAl_4O_7:Tb~(3+)(Sm~(3+))的自蔓延燃烧合成及光致发光特性
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摘要
用自蔓延燃烧合成(SPCS)技术制备CaAl_4O_7∶Tb~(3+)和CaAl4O7∶Sm~(3+)两种荧光材料,并通过X射线衍射(XRD)、Fourier变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、紫外-可见漫反射谱(UV-Vis DRS)等方法考察两种荧光材料的结构、形貌及光吸收性质.结果表明:SPCS技术可显著降低合成温度;样品的结晶度较好,Tb~(3+)和Sm~(3+)掺杂后,未改变CaAl_4O_7的单斜晶系结构与空间群特征,但使晶格轻微畸变且使其吸收主峰和吸收带边红移;CaAl_4O_7∶Tb~(3+)和CaAl_4O_7∶Sm~(3+)分别发射特征绿光和粉红光,其激发光谱和发射光谱均呈较精细的结构特征.
CaAl_4O_7 ∶Tb~(3+)and CaAl_4O_7 ∶Sm~(3+)fluorescent materials were prepared by the selfpropagating combustion synthesis(SPCS)technology.The structure, morphology and light absorption property of the two fluorescent materials were investigated by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),scanning electron microscope(SEM),and ultraviolet-visible diffuse-reflectance spectrum(UV-Vis DRS),etc.The results show that SPCS technology can significantly reduce the synthesis temperature,crystallinity of samples is good,and the doping of Tb~(3+)and Sm~(3+)does not change monoclinic system structure and space group characteristics of CaAl_4O_7,but it results in the slight lattice distortion and the redshift of absorption peak and absorption band edge.The CaAl_4O_7∶Tb~(3+)and CaAl_4O_7∶Sm~(3+)emit green and pink light,respectively,and their excitation spectra and emission spectra show fine structural characteristics.
CaAl_4O_7 ∶Tb~(3+)and CaAl_4O_7 ∶Sm~(3+)fluorescent materials were prepared by the selfpropagating combustion synthesis(SPCS)technology.The structure, morphology and light absorption property of the two fluorescent materials were investigated by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),scanning electron microscope(SEM),and ultraviolet-visible diffuse-reflectance spectrum(UV-Vis DRS),etc.The results show that SPCS technology can significantly reduce the synthesis temperature,crystallinity of samples is good,and the doping of Tb~(3+)and Sm~(3+)does not change monoclinic system structure and space group characteristics of CaAl_4O_7,but it results in the slight lattice distortion and the redshift of absorption peak and absorption band edge.The CaAl_4O_7∶Tb~(3+)and CaAl_4O_7∶Sm~(3+)emit green and pink light,respectively,and their excitation spectra and emission spectra show fine structural characteristics.
引文
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[3]李政,于苗.5,10,15,20-四(氮-烷基)咔唑卟啉及其稀土乙酰丙酮配合物的合成与荧光性能[J].吉林大学学报(理学版),2016,54(6):1145-1450.(LI Zheng,YU Miao.Sythesis and Fluorescence Properties of Meso-tetra(N-alkyl)-carbazolylporphyrins and Their Lanthanide Acetylacetone Complexes[J].Journal of Jilin University(Science Edition),2016,54(6):1145-1450.)
[4]龚丽娜,邹海峰,郑克岩,等.Eu3+掺杂SiO2微球的制备及发光性质[J].吉林大学学报(理学版),2014,52(6):1320-1324.(GONG Lina,ZOU Haifeng,ZHENG Keyan,et al.Synthesis and Luminescnece Properties of Monodisperse SiO2∶Eu3+Microspheres[J].Journal of Jilin University(Science Edition),2014,52(6):1320-1324.)
[5]潘玲.稀土掺杂铝酸盐发光材料的制备方法与发光机理分析[J].化工新型材料,2017,45(2):13-15.(PAN Ling.Preparation Method and Luminescence Mechanism Analysis of Rare Earth Doped Aluminate Luminescent Material[J].New Chemical Materials,2017,45(2):13-15.)
[6]DONG Cheng.Powder X:Windows-95-Based Program for Powder X-Ray Diffraction Data Procession[J].Journal of Applied Crystallography,1999,32(4):838.
[7]TAS A C.Chemical Preparation of the Binary Compounds in the Calcia-Alumina System by Self-propagating Combustion Synthesis[J].Journal of the American Ceramic Society,1998,81(11):2853-2863.
[8]安丽娟,张密林,刘文彬,等.溶胶-凝胶法制备铝酸钡发光材料[J].化学与粘合,2004,26(5):270-272.(AN Lijuan,ZHANG Milin,LIU Wenbin,et al.Sol-Gel Synthesis of BaAl12O19∶Mn Luminescent Material[J].Chemistry and Adhesion,2004,26(5):270-272.)
[9]GERVAIS C,MACKENZIE K J D,SMITH M E,et al.Multiple Magnetic Field 27 Al Solid-State NMR Study of the Calcium Aluminates CaAl4O7and CaAl12O19[J].Magnetic Resonance in Chemistry,2001,39(1):23-28.
[10]张思远,毕宪章.稀土光谱理论[M].长春:吉林科学技术出版社,1991:170-171.(ZHANG Siyuan,BI Xianzhang.Rare Earth Spectrum Theory[M].Changchun:Jilin Science and Technology Press,1991:170-171.)
[11]张忠义,张韫宏,李晓丽,等.(Sr,Ba)Al12O19∶RE3+(RE=Ce,Tb)的VUV发光及Ce3+→Tb3+的能量传递[J].光谱学与光谱分析,2008,28(8):1737-1740.(ZHANG Zhongyi,ZHANG Wenhong,LI Xiaoli,et al.The VUV Luminescent Properities and the Ce3+→Tb3+Energy Transfer in the(Sr,Ba)Al12O19[J].Spectroscopy and Spectral Analysis,2008,28(8):1737-1740.)
[12]孙家跃,杜海燕,胡文祥.固体发光材料[M].北京:化学工业出版社,2003:240-241.(SUN Jiayue,DU Haiyan,HU Wenxiang.Solid Luminescent Materials[M].Beijing:Chemical Industry Press,2003:240-241.)
[13]MAY P S,METCALF D H,RICHARDSON F S,et al.Measurement and Analysis of Excited-State Decay Kinetics and Chiroptical Activity in the 6 HJ←4 G52 Transitions of Sm3+in Trigonal Na3[Sm(C4H4O5)3]·2NaClO4·6H2O[J].Journal of Luminance,1992,51(5):249-268.
[14]TAMURA Y,SHIBUKAWA A.Optical Studies of CaS∶Eu,Sm Infrared Stimulable Phosphors[J].Japanese Journal of Applied Physics,1993,32(7):3187-3196.