Hydrothermal synthesis and photoluminescence behavior of CeO_2 nanowires with the aid of surfactant PVP
Hydrothermal synthesis and photoluminescence behavior of CeO_2 nanowires with the aid of surfactant PVP作者机构:Key Laboratory of Opto-electronic Information Acquisition and Manipulation Anhui University Hefei 230039 China Engineering Technology Research Center of Magnetic Materials Anhui University Hefei 230039 China
出 版 物:《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报(英文版))
年 卷 期:2010年第17卷第4期
页 面:470-474页
核心收录:
学科分类:0709[理学-地质学] 0819[工学-矿业工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0806[工学-冶金工程] 0708[理学-地球物理学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学(可授工学、理学学位)] 0702[理学-物理学]
基 金:supported by the National Natural Science Foundation of China(Nos.50901074 and 50672001) the Young Teacher Natural Science Fund of Anhui Province,China(No.2008jq1002)
主 题:cerium oxide polyvinyl pyrrolidone hydrothermal photoluminescence
摘 要:Well-crystalline CeO_2 nanowires were prepared via a surfactant-assisted hydrothermal *** temperature and reaction time were changed for the determination of optimal synthesis *** as-obtained products were characterized by X-ray diffraction (XRD),high-resolution transmission electron microscopy(HRTEM),and field emission scanning electron microscopy(FESEM).The results show that single crystal CeO_2 nanowires with high yield and good uniformity can be obtained hydrothermally at 180℃for 12 h with the aid of 2.0 g surfactant(polyvinyl pyrrolidone,PVP).The role of PVP was then discussed and a possible growth mechanism was proposed. Moreover,room temperature photoluminescence(PL) spectra were obtained for these CeO2 nanowires,which are believed to be related to the abundant defects in these nanostructures.