| 光谱学与光谱分析 |
|
|
|
|
|
| Study on the Hydrothermal Synthesis and Fluorescence of LaF3∶Tb3+, Ce3+ Nanocrystals |
| XU Shi-hua1, HUANG Zhong-jing1*, LIU Guo-cong2*, WEI Qing-min3 |
1. College of Chemistry & Ecological Engineering, Guangxi University for Nationalities, Nanning 530008, China
2. Department of Chemical Engineering, Huizhou University, Huizhou 516007, China
3. Department of Chemistry, Yulin Normal University, Yulin 537000, China |
|
|
|
|
Abstract LaF3∶Tb3+, Ce3+ nanocrystals were prepared with hydrothermal method with the help of cetyltrimethyl ammonium bromide (CTAB). The effects of pH values of the solution, Ce3+/Tb3+ ratio value and reaction time on the luminescent properties were investigated. XRD analysis shows that the as-prepared samples possess hexagonal phase and their main diffraction peaks of samples are similar to the standard card (JCPDS 32-0483). Compared with pure LaF3, the main diffraction peaks of the doped samples have a slight shift, showing existing isomorphous substitution between La3+ and the doped rare earth ions in parent lattice of LaF3. It is found from TEM results that the as-prepared samples have good crystallinity and their average grain sizes change in the range of 20～50 nm. The excitation spectra indicate that the stronger excitation spectrum peaks exist at 250 nm, which is assigned to the transition of 4f→5d from Ce3+. When activated at 250 nm, all LaF3∶Tb3+, Ce3+ nanocrystals possess weak blue emission at 490 nm (electric dipole transition, 5D4→7F6) and good green emission at 543 nm (magnetic dipole transition, 5D4→7F5). As the Ce3+/Tb3+ ratio increases, the fluorescence intensities increase at first and then weaken, and reach the strongest green emission at nCe3+/nTb3+=4. The pH values have some influence on the colors and intensities of the LaF3∶Tb3+, Ce3+ nanocrystals. The sample prepared at pH 9 presents the best color, while the one at pH 7 exhibits the strongest green emission. Besides, increasing reaction time is helpful to improve color purity of sample and enhance its green emission.
|
|
Received: 2014-10-28
Accepted: 2015-02-04
|
|
|
|
Corresponding Authors:
HUANG Zhong-jing, LIU Guo-cong
E-mail: zhongjinghuang@163.com; gcl_109@163.com
|
|
[1] Wang Guofeng, Peng Qing, Li Yadong. Acc. Chem. Res.，2011, 44(5)：322.
[2] Gai Shili, Li Chunxia, Lin Jun, et al. Chem.，Rev., 2014, 114：2343.
[3] Uéslen Rocha, Carlos Jacinto da Silva, Wagner Ferreira Silva, et al. American Chemical Society NANO，2013，7：1188.
[4] Li Xingbo, Gai Shili, Li Chunxia, et al. Inorg. Chem.，2012, 51：3963.
[5] Wang Miao, Jiang Guoqing, Tang Yanfeng, et al. Cryst. Eng. Comm.，2013, 15：1001.
[6] Tomasz Grzyb, Marcin Runowski, Agata Szczeszak, et al. J. Phys. Chem. C.，2012, 116(32)：17188.
[7] Cao Chunyan, Yang Hyunkyoung, Chun Jongwon, et al. J. Mater. Chem.，2011, 21(28)：10342.
[8] Dong Hui, Liu Guocong, Liang Dawen, et al. J. Nanopart Res.，2013, 15(8)：1854.
[9] Hua Shanshan, Yang Jun, Lin Jun, et al. Mater. Chem. Phys.，2012, 2-3(133)：751.
[10] Zhu Xiaoxu, Zhang Qinghong, Li Yaogang, et al. J. Mater. Chem.，2010, 20：1766. |
| [1] |
WANG Chong1, WANG Jing-hua1, 2, LI Dong-dong1, SHE Jiang-bo2. Preparation of Gd3+-Doped LiYF4∶Yb3+/Ho3+ Micro-Crystal and the Application Research in Anti-Counterfeiting[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(11): 3581-3587. |
| [2] |
WANG Chong1, MO Jian-ye1，2, LI Dong-dong1, SHE Jiang-bo2, LIU Zhen2. Application and Research of NaYF4∶Yb3+/Eu3+ Upconverting Luminescent Micro-Nano Particles in Anti-Counterfeiting Identification[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(05): 1525-1529. |
| [3] |
Lü Yu-guang, SHI Qi, GUO Qiang, SONG Shan-shan, QIN Yu-shan, WANG Bo, YANG Li-bin*. Studies on Luminescent Properties of TCNE-Phenanthroline Complex[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(02): 634-637. |
| [4] |
WANG Zhen-xing, XUE Juan-qin, LI Di. Studies on the Ionic Liquid-Assisted Hydrothermal Synthesis of Zn2SnO4[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(04): 1198-1204. |
| [5] |
XU Yang, QIANG Liang-sheng, YANG Yu-lin, ZHANG Hui-jie, FAN Rui-qing* . A Purple-Emitting Luminescence Complex [Cd(bpdc)(phen)2(H2O)]·6H2O: Synthesis, Structure and Spectral Properties[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(01): 132-136. |
| [6] |
TAO Dong-liang1, 3, ZHANG Kun1, ZHANG Hong1, CUI Yu-min1, 3, XU Yi-zhuang2*, LIU Yu-hai2 . Study on Synthesis and Matching Degree of Energy Level of Terbium Complexes Using o-Fluoro-Benzoic Acid as Ligand [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(04): 994-998. |
| [7] |
DONG Yu-wei, FAN Rui-qing*, WANG Ping, WANG Li-yuan, YANG Yu-lin* . Synthesis, Crystal Structure and Spectral Properties Study of a 3D Netlike Coordination Polymer [Zn(HBIDC)·H2O]n [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(02): 481-485. |
| [8] |
BAO Jin-rong1, ZHU Xiao-wei2, JIN Shu-xin1, Lü Yue1, XIONG Li-chao1, LI Chang-fu1, LI Wen-xian1 . Hydrothermal Synthesis and Luminescence Properties of CePO4∶Tb Flower-Like Clusters[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(01): 27-30. |
| [9] |
WEI Qing-min1, 3, LU Jian-ping1, LIU Guo-cong1, 2*, LIANG Da-wen3 . Solvothermal Synthesis and Optical Properties of LiVO4∶Dy3+ Nanorod [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(12): 3329-3334. |
| [10] |
WANG Shan-shan, MI Wei-qing, ZHU Hong, WANG Fang-hui*. Study on the Fluorescence Properties of Carbon Dots Prepared by One Step Microwave Method [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(10): 2710-2713. |
| [11] |
WANG Li-yuan, FAN Rui-qing*, WANG Ping, YANG Yu-lin*. Synthesis, Characterization and Luminescence Properties of a Copper(Ⅰ) Complex[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(09): 2469-2472. |
| [12] |
FAN Rui-qing, WANG Ping, REN Jin-yu, ZHOU Guang-peng, YANG Yu-lin*. Synthesis, Crystal Structure and Luminescent Properties of a Dysprosium CoordinaAtion Polymer Based on Pyridine-2,6-Dicarboxylic Acid [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(07): 1734-1738. |
| [13] |
ZHOU Ji, JI Tian-hao*, LI Li, SUN Jia-yue . Preparation of CdSe Nanoparticle-Deposited TiO2 Nanobelts and Their Visible-Light Photocatalysis [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(05): 1398-1402. |
| [14] |
JI Tian-hao, YANG Fang, ZHOU Jiao-yan, DU Hai-yan, SUN Jia-yue . Visible-Light Responding BiVO4/TiO2 Nanocomposite Photocatalyst [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(07): 1944-1947. |
| [15] |
LI Lian, HE You-zhao*, GAN Wu-er, WANG Xiao-kui, XIE Hai-yang, GAO Yong . On-Line Coupling of Microcolumn Electrophoresis and UV-Vis Spectrophotometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(03): 762-766. |
|
|
|
|
