naa a22 4500 510804217 CHVBK 20180411083409.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11664-013-2622-z doi (NATIONALLICENCE)springer-10.1007/s11664-013-2622-z Synthesis, Structural and Optical Characterization of Sol-Gel-Derived Y-Doped Mesoporous CeO2 [Elektronische Daten] [Ying Lee, Kun-Dar Li, Cheng-Hsueh Lu, Jung-Hsiung Shen, Lay Teoh, Ghi Chiang] Highly crystalline and thermally stable undoped CeO2 and Y-doped mesoporous CeO2 particles have been synthesized from cerium(III) nitrate hexahydrate [Ce(NO3)3·6H2O] by the sol-gel method. Mesoporous CeO2 doped with 2mol.% Y2O3 and calcined at 500°C possesses specific surface area of 130.39m2/g and retains a surface area of 91.84m2/g at 600°C. In comparison, undoped calcined materials have smaller specific surface areas of 43.23m2/g and 20.24m2/g at 500°C and 600°C, respectively. Results from x-ray diffraction (XRD) analysis, Raman spectroscopy, and selected-area electron diffraction (SAED) analysis indicated that the synthesized undoped CeO2 and Y-doped mesoporous CeO2 have the fluorite structure of bulk CeO2. The crystallite size of CeO2 is also considerably reduced by doping. The optical bandgap was found to be 3.24eV for the undoped and 3.36eV for the doped samples with calcination at 600°C. These results suggest that there are potential applications of Y-doped mesoporous CeO2 with nanocrystals in the design of photocatalysts and optical devices. TMS, 2013 CeO2 nationallicence yttrium nationallicence mesoporous nationallicence doping nationallicence sol-gel nationallicence Lee Ying Department of Materials Engineering, National Pingtung University of Science and Technology, 912, Neipu, Pingtung, Taiwan aut Li Kun-Dar Department of Materials Science, National University of Tainan, 700, Tainan, Taiwan aut Lu Cheng-Hsueh Department of Materials Science and Engineering, National Cheng Kung University, 701, Tainan, Taiwan aut Shen Jung-Hsiung Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, 80424, Kaohsiung, Taiwan aut Teoh Lay Department of Mechanical Engineering, National Pingtung University of Science and Technology, 912, Neipu, Pingtung, Taiwan aut Chiang Ghi Department of Mechanical Engineering, National Pingtung University of Science and Technology, 912, Neipu, Pingtung, Taiwan aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/8(2013-08-01), 2549-2555 0361-5235 42:8<2549 2013 42 11664 https://doi.org/10.1007/s11664-013-2622-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2622-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Ying Department of Materials Engineering, National Pingtung University of Science and Technology, 912, Neipu, Pingtung, Taiwan aut NATIONALLICENCE 700 1- Li Kun-Dar Department of Materials Science, National University of Tainan, 700, Tainan, Taiwan aut NATIONALLICENCE 700 1- Lu Cheng-Hsueh Department of Materials Science and Engineering, National Cheng Kung University, 701, Tainan, Taiwan aut NATIONALLICENCE 700 1- Shen Jung-Hsiung Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, 80424, Kaohsiung, Taiwan aut NATIONALLICENCE 700 1- Teoh Lay Department of Mechanical Engineering, National Pingtung University of Science and Technology, 912, Neipu, Pingtung, Taiwan aut NATIONALLICENCE 700 1- Chiang Ghi Department of Mechanical Engineering, National Pingtung University of Science and Technology, 912, Neipu, Pingtung, Taiwan aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/8(2013-08-01), 2549-2555 0361-5235 42:8<2549 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer