title: Ceria Nanotube Formed by Sacrificed Precursors Template through Oswald Ripening.
abstract: Controllable preparation of ceria nanotube was realized by hydrothermal treatment of Ce(OH)CO3 precursors. The gradually changing morphologies and microstructures of cerium oxide were characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. A top-down path is illuminated to have an insight to the morphological transformation from nanorod to nanotube by adjusting the reaction time. The growth process is investigated by preparing a series of intermediate morphologies during the shape evolution of CeO2 nanostructure based on the scanning electron microscopy image observation. On the basis of the time-dependent experimental observation, the possible formation mechanism related to oriented attachment and Oswald ripening was proposed, which might afford some guidance for the synthesis of other inorganic nanotubes.
authors.affiliation: School of Material Science and Engineering, Shandong Jiaotong University, Jinan, P.R China.
authors.forename: Laixue
authors.initials: L
authors.lastname: Pang
authors.affiliation: School of Material Science and Engineering, Shandong Jiaotong University, Jinan, P.R China.
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Material Science and Engineering, Shandong Jiaotong University, Jinan, P.R China.
authors.forename: Xinde
authors.initials: X
authors.lastname: Tang
mesh_terms: D002563:Cerium / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D008956:Models, Chemical; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D013696:Temperature; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D002563:Cerium; C030583:ceric oxide