caa a22 4500 445826509 CHVBK 20180317145300.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10854-010-0194-8 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0194-8 Rare earth titanates ceramics Na2La2Ti3O10: Pr3+ and RE2Ti2O7: Pr3+ (R=Gd, Y): sol-gel synthesis, characterization and luminescence [Elektronische Daten] [Lixia Lin, Bing Yan] In this work, rare earth (La, Gd, Y) titanate ceramics have been synthesized with a sol-gel process of Ti(OC4H9)4 precursor. It is found that these titanates of the three rare earth ions present two different typical phase composition and crystal structure in spite of the same reaction ratio of the precursors and synthesis conditions, which is taken in the formula Na2La2Ti3O10, and RE2Ti2O7 (RE=Gd, Y), respectively. Besides, the microstructure (particle size and morphology) also show different features for different titanates by SEM. Subsequently, the optical properties (such as ultraviolet-visible diffuse reflectance absorption and photoluminescence) of these titanates activated with Pr3+ Na2La2Ti3O10: x mol % Pr3+ (x=0, 0.2, 2, 5, 10, 15), and RE2Ti2O7: x mol % Pr3+ (RE=Gd and Y) (both x=0, 0.2) are compared to study. Especially Na2La2Ti3O10: Pr3+ is selected as an example to check that the concentration effect on the luminescence of Pr3+, revealing that Na2La2Ti3O10: 0.2mol % Pr3+ possesses the strongest emission. Springer Science+Business Media, LLC, 2010 Lin Lixia Department of Chemistry, Tongji University, Siping Road 1239, 200092, Shanghai, China aut Yan Bing Department of Chemistry, Tongji University, Siping Road 1239, 200092, Shanghai, China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/6(2011-06-01), 672-678 0957-4522 22:6<672 2011 22 10854 https://doi.org/10.1007/s10854-010-0194-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0194-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lin Lixia Department of Chemistry, Tongji University, Siping Road 1239, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Yan Bing Department of Chemistry, Tongji University, Siping Road 1239, 200092, Shanghai, China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/6(2011-06-01), 672-678 0957-4522 22:6<672 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer