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| SYNTHESIS KINETICS OF (Y, Gd)2O3∶Eu3+ NANO-POWDERS DURING PROCESS OF PREPARATION |
| ZHU Hongyan1, MA Weimin1, WEN Lei2, GUAN Renguo3,MA Lei1,3, WU Nan1 |
1. Key Laboratory for Rare-earth Chemical and Applying of Liaoning Province, School of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142
2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016
3. Institute of Metallurgy and Materials, Northeastern University, Shenyang 110819 |
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Cite this article:
ZHU Hongyan, MA Weimin, WEN Lei, GUAN Renguo,MA Lei, WU Nan. SYNTHESIS KINETICS OF (Y, Gd)2O3∶Eu3+ NANO-POWDERS DURING PROCESS OF PREPARATION. Acta Metall Sin, 2012, 48(6): 671-677.
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Abstract Using NH3·H2·O and NH4HCO3 blended solution as a complex precipitation agent, (Y, Gd)2O3∶Eu3+ nano--particles were synthesized by co--precipitation reaction. XRD and SEM were applied to analyze the crystallization and morphology of the sample. The thermal decomposition curves of samples were analysed by TG-DTA at different heating rates. Results showed that under the conditions of pH=10 and reverse titration, the change process of (Y, Gd)2O3∶Eu3+ precursors is divided into three steps. The apparent activation energy of each step was calculated by using the Doyle--Ozawa and Kissinger methods. The calculated results are 191.54, 557.05 and 236.58 kJ·mol-1. The dynamic equations have been also established. The activation energy of (Y, Gd)2O3∶Eu3+ grain growth is 35.58 kJ·mol-1, indicating that grain growing is primarily controlled by interfacial reaction during process of preparation.
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Received: 28 November 2011
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| [1] van Eijk C W E. Phys Med Biol, 2002; 47: 85[2] Hell E, Knuepfer W, Mattern D. Nucl Instrum Methods Phys Res, 2000; 454A: 40[3] Jung Y S, Kim K H, Jang T Y, Tak Y, Baeck S H. Curr Appl Phys, 2011; 11: 358·[4] Louardi A, Rmili A, Ouachtari F, Bouaoud A, Elidrissi B, Erguig H. J Alloys Compd, 2011; 509: 9183[5] Selvam N C S, Kumar R T, Yogeenth K, Kennedy L J, Sekaran G,Vijaga J J. Powder Technol, 2011; 211: 250[6] Gunawidjaja R, Myint T, Eilers H. Ceram Int, 2012; 38: 775[7] Taniguchi T, Watanabe T, Katsumata K, Okada K, Matsushita N. J Phys Chem, 2010; 114C: 3763[8] Chien J T, Hsu D J, Inbaraj B S, Chen B H. Int J Mol Sci, 2010; 11: 2805[9] Matiadis D, prousis K C, Markopoulou O I. Molecules, 2009; 14: 3914[10] Si W, Wang J, Wang X H, Gao H, Zhai Y C. J Inorg Mater,2011; 26: 726 (司伟, 王晶, 王修慧, 高宏, 翟玉春. 无机材料学报, 2011; 26: 726)[11] Si W, Gao H, Wang J, Jiang D, Zhai Y C. Chin J Inorg Chem,2010; 26: 1443 (司伟, 高宏, 王晶, 姜妲, 翟玉春. 无机化学学报,2010; 26: 1443)[12] Jie X F, Liang G C, Wang L, Zhi X K, Gao L M. Adv Mater Res,2010; 178: 172[13] Yu H Y, Ren W T, Zhang Y. J Appl Polym Sci, 2009; 113: 17[14] Zhuang Y X, Xing P F, Duan T F, Shi H Y, He J C. J Rare Earths,2011; 29: 793[15] Wang C S, Wang R Q, Wang Y, Fu Y X. Key Eng Mater, 2012; 501: 349[16] Dai J F, Ling R Q, Wang K Z. Adv Mater Res, 2012; 418: 282[17] Kok M V. Fuel Process Technol, 2012; 96: 134[18] Ma W M, Wen L, Shen S F, Liu J, Wang H D. Acta Metall Sin,2009; 45: 759 (马伟民, 闻雷, 沈世妃, 刘晶, 王华栋. 金属学报, 2009; 45: 759)[19] Ozawa T. Bull Chem Soc Jpn, 1965; 38: 1881[20] Doyle C D. J Appl Polym Sci, 1961; 5: 285[21] Kisssinger H E. J Res Nat Bue Stand, 1965; 57: 217[22] Kissingger H E. Anal Chem, 1957; 29: 1702[23] Zhao Y N, Zhang W L. Adv Mater Res, 2011; 194: 558[24] Mullaugh K M, Luther G W. J Nanopart Res,2011; 13: 393 |
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