Characterization and optical properties of pole-like nano-CeO2 synthesized by a facile hydrothermal method

被引：180
作者：
Wang, Leini [1 ]
Meng, Fanming [1 ,2 ]
Li, Kangkang [3 ]
Lu, Fei [4 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China
[2] Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China
[3] Peking Univ, Dept Microelect, Lab SoC, Beijing 100871, Peoples R China
[4] Baotou Res Inst Rare Earths, Baotou 014030, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2013年 / 286卷
关键词：
Ceria; Hydrothermal method; Oxygen defect; Optical property; NANOCRYSTALLINE CERIUM OXIDE; CEO2; NANOPARTICLES; CONTROLLABLE SYNTHESIS; CO OXIDATION; PRECIPITATION; CATALYST; OXYGEN; ROUTE; RAMAN;
D O I：
10.1016/j.apsusc.2013.09.067
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
CeO2 nanopoles have been successfully synthesized by a hydrothermal method using CeC13 center dot 7H(2)O as cerium source, NaOH as mineralizer, and ethylenediamine as complexant. The pole-like nano-CeO2 was examined by XRD, TEM, XPS, UV-vis, PL, and Raman scattering. The results show that the crystallinity of the nanopoles is not so good, and the main valence of cerium is +4. The estimated direct band gaps are 3.014, 3.099, 2.931, and 2.927 eV for the samples synthesized within 2, 18, 50, and 100h, respectively. These band gaps are smaller than bulk CeO2, oxygen vacancies and Ce3+ ions result in an effective red shifting of the band gap. The visible luminescence exhibits similar emission peaks of room temperature photoluminescence and the emission intensity increases with the increase of concentration of oxygen vacancies and Ce3+ ions. (C) 2013 Elsevier B.V. All rights reserved.
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页码：269 / 274
页数：6
相关论文
共 40 条
[11]   Raman, XRD and microscopic investigations on CeO2-Lu2O3 and CeO2-SC2O3 systems:: A sub-solidus phase evolution study [J].
Grover, V. ;
Banerji, Ankita ;
Sengupta, P. ;
Tyagi, A. K. .
JOURNAL OF SOLID STATE CHEMISTRY, 2008, 181 (08) :1930-1935
[12]   Enhanced spectral emissivity of CeO2 coating with cauliflower-like microstructure [J].
Huang, Jianping ;
Li, Yibin ;
He, Xiaodong ;
Song, Guangping ;
Fan, Chenglei ;
Sun, Yue ;
Fei, Weidong ;
Du, Shanyi .
APPLIED SURFACE SCIENCE, 2012, 259 :301-305
[13]   Exploration of CeO2 nanoparticles as a chemi-sensor and photo-catalyst for environmental applications [J].
Khan, Sher Bahadar ;
Faisal, M. ;
Rahman, Mohammed M. ;
Jamal, Aslam .
SCIENCE OF THE TOTAL ENVIRONMENT, 2011, 409 (15) :2987-2992
[14]   Characterization of Multiband Imager Aboard SELENE Pre-flight and In-flight Radiometric Calibration [J].
Kodama, Shinsuke ;
Ohtake, Makiko ;
Yokota, Yasuhiro ;
Iwasaki, Akira ;
Haruyama, Junichi ;
Matsunaga, Tsuneo ;
Nakamura, Ryosuke ;
Demura, Hirohide ;
Hirata, Naru ;
Sugihara, Takamitsu ;
Yamamoto, Yasuji .
SPACE SCIENCE REVIEWS, 2010, 154 (1-4) :79-102
[15]   Template synthesis of CeO2 ordered nanowire arrays [J].
La, RJ ;
Hu, ZA ;
Li, HL ;
Shang, XL ;
Yang, YY .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 368 (1-2) :145-148
[16]   Facile Synthesis under Near-Atmospheric Conditions and Physicochemical Properties of Hairy CeO2 Nanocrystallines [J].
Li, Xiaodong ;
Li, Ji-Guang ;
Huo, Di ;
Xiu, Zhimeng ;
Sun, Xudong .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (05) :1806-1811
[17]   Solvothermal synthesis of monodisperse self-assembly CeO2 nanospheres and their enhanced blue-shifting in ultraviolet absorption [J].
Liu, Bo ;
Liu, Bingbing ;
Li, Quanjun ;
Li, Zepeng ;
Liu, Ran ;
Zou, Xu ;
Wu, Wei ;
Cui, Wen ;
Liu, Zhaodong ;
Li, Dongmei ;
Zou, Bo ;
Cui, Tian ;
Zou, Guangtian .
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 503 (02) :519-524
[18]   Controlled synthesis and optical properties of CeO2 nanoparticles by a N2H4•H2O-assisted hydrothermal method [J].
Lu, Fei ;
Meng, Fanming ;
Wang, Leini ;
Sang, Yuan ;
Luo, Jingjing .
MICRO & NANO LETTERS, 2012, 7 (07) :624-627
[19]   Morphology-selective synthesis method of nanopolyhedra and square-like CeO2 nanoparticles [J].
Lu, Fei ;
Meng, Fanming ;
Wang, Leini ;
Luo, Jingjing ;
Sang, Yuan .
MATERIALS LETTERS, 2012, 73 :154-156
[20]   Facile Electrochemical Synthesis of Single Crystalline CeO2 Octahedrons and Their Optical Properties [J].
Lu, Xi-hong ;
Huang, Xi ;
Xie, Shi-lei ;
Zheng, De-zhou ;
Liu, Zhao-qing ;
Liang, Chao-lun ;
Tong, Ye-Xiang .
LANGMUIR, 2010, 26 (10) :7569-7573
1234